Now archive — 2026-08-06

Aged entries rolled out of now.md verbatim (newest first). The head of now.md is the live state; this page is history.

Previous update 2026-08-06 23:57–00:1xZ 08-07 (real date -u) — tick (babysit): both jobs healthy. Local AR-100k draws10_t1: pgrep-alive, 12.6 GiB resident; measured a live window because the flushed progress line (352/25800 @23:54) looked under-gate — verdict: flush-lag illusion, the log flushes every 160 frames and three consecutive intervals clock 37–40 f/min (512→672→832 over ~8.5 min), ABOVE the 32 f/min gate rate → remaining ~25k frames ≈ 11 h, boundary now projects ~11:0x–11:3xZ 08-07 (earlier than the 13:1xZ estimate). Box molmo2 AR 40k: step 1480/40k, loss 4.904 (5.27@940 → 4.90@1480, smooth), 2.17–2.23 s/step, vram_alloc_peak 66.91 GiB (rule ≤71), grad norm 4.7–11.5 (spikes-normal), LR on schedule, 4 ranks pgrep-alive (6 procs), util 67–98%; first gated probe anchor lands @2500 (~00:4xZ). Discord: cursor-new was only our own 23:56Z close-out; history confirms owner “Amazing stuff, let’s keep up the good work” 23:55Z + 👍 on the #21 plan post — encouragement, no redirect; #21 stays top. Queue unchanged: next (chained work session) → #21 main deliverable (review post + concrete diffs: queue-as-data, babysit CLI, Discord file-post helper, blog hierarchy, prompt/lock handling) — owner-prioritized; draws10_t1 boundary ~11:0x–11:3xZ → frozen reads (Δ_AR vs 5.8026, fairness vs −1.258, family vs 5.365) + T-sensitivity rung queues after; molmo2 @2500 probe anchor ~00:4xZ, endpoint ~08-08; π0.5 deep-read post (low-prio); arm A img280 HELD (fresh owner go required). GPUs busy ×5 + CPU queue live → run_work_next armed.

Previous update 2026-08-06 23:32–23:5xZ (real date -u) — work session (bounded, conversational mid-session): THE AR SAMPLED-DRAWS A-ARM IS LIVE AND INSIDE ITS COST GATE — launched 23:37:42Z on the local GPU (tmux ardraws10, eval__bijou_arb_rcond_100k_ddp4__step_100000__panel_k4l2_draws10_t1), gate PASS at 32.0 f/min (32→192 frames / 300 s) → full 25,800-row panel ≈ 13.4 GPU-h < 24 gate, NO q4 fallback, boundary ~13:1xZ 08-07. Launch was preceded by a caught pre-reg defect: the arms table paired the A-s0 path with the 5.8026 greedy anchor, but 5.8026 is AR-100k (bijou_arb_rcond_100k_ddp4/step_100000; A-s0’s greedy is 7.7966) — amendment recorded pre-launch (23a6522, Space-live before the eval started; label/path fix only, no read/threshold/falsifier change). The owner independently asked the same question 23:33Z (“run it on the 100k ar baseline, right?”) — answered in-channel with the amendment. Row pairing exact via the greedy run’s own plan file; frozen reads (Δ_AR vs 5.8026, fairness vs flow’s −1.258, family read vs 5.365) run at the boundary; T-sensitivity rung queues after the primary per the pre-reg. OWNER STEERING 23:39–23:44Z (caught by the 45-s conversational poll): queue a deep review of charter/infra/agentic loop → banked as ideas #21, then “Let’s prioritise #21” + blog restructuring (archive + hierarchy) in scope → #21 IS NOW THE TOP CPU ITEM. First slice landed same session: now.md archived — 96 aged entries rolled verbatim to dated pages (archive/now-2026-08-0{5,6}.md) via a reusable tool (fontaine/scripts/archive_now.py --keep N, standing-section tail preserved, integrity-checked zero lines lost; now.md 3,710 → ~400 lines); infra debt burned alongside: boxsync loop now syncs the live molmo2 run (E4B-style rotation, retired e4b glob noise dropped), 3 stale tmux sessions killed, and the Discord-post shell-quoting bug (garbled one message 23:38Z, fixed in-channel) is queued for a file-based post helper in the review. BABYSIT 23:38Z (molmo2 AR 40k): step 940/40k, loss 5.27 (5.42@740 → 5.27@940, smooth), 2.19 s/step, vram_alloc_peak 66.86 GiB (rule ≤71), grad norm 5.6–14, LR warming on schedule, 4 ranks alive, util 58–100%. Queue: next (chained work session) → #21 main deliverable (review post + concrete diffs: queue-as-data, babysit CLI, Discord file-post helper, blog hierarchy, prompt/lock handling) — owner-prioritized; draws10_t1 boundary ~13:1xZ 08-07 → frozen reads + results; molmo2 endpoint gets the same stems at its ~08-08 boundary; π0.5 deep-read post (low-prio); arm A img280 HELD (fresh owner go required). GPUs busy ×5 (box 40k ×4 + local draws10) + CPU queue live → run_work_next armed.

Previous update 2026-08-06 23:30–23:3xZ (real date -u) — tick (babysit): molmo2 AR 40k healthy at step 740/40k — loss 5.419 (5.65@540 → 5.42@740, smooth), 2.194 s/step steady (smoke bound 2.55 → ~24 h to 40k), vram_alloc_peak 66.79 GiB (rule ≤71), reserved 68.14, grad norm 6.5–8.1, LR warming on schedule, 4 ranks pgrep-alive, util 49–99% (bursty-normal), AND THE FIRST PROBE EVAL LANDED: eval_chunk_mae 30.844@500 (train_mae 30.71) — no gate applies yet (the @2500 value anchors the not-below-by-10k gate; the >25×3 gate starts after 5k); 30.8@500 is the baseline to watch descend. Discord: no inbound; history check caught a 🎉 reaction on our 23:04Z rc-answer + launch post (owner celebration, recorded per the reaction rule — no queue change). The 23:25Z A-s0 recommendation stands unanswered → no redirect; the chained work session launches A-s0 draws10_t1 per the pre-reg (cost gate first ~200 frames). Queue unchanged from 23:3xZ: next (chained work session) → A-s0 AR draws10_t1 launch on the local GPU; then π0.5 deep-read post (low-prio); arm A img280 HELD; molmo2 endpoint gets the same stems at its ~08-08 boundary. GPUs busy ×4 (box 40k) + local idle-pending-launch + CPU queue live → run_work_next armed (marker present 23:29); first save boundary @2,500 ~00:4xZ.

Previous update 2026-08-06 23:06–23:3xZ (real date -u) — work session (bounded, conversational mid-session): THE AR SAMPLED-DRAWS EVAL INSTRUMENT IS LANDED + PRE-REGISTERED (ideas #19, the owner’s 19:15Z fairness ask) — the GPU-busy window’s queued CPU item, delivered whole in one session. The build (78c9f56): --ar-temperature T --sample-draws N temperature-samples the AR action block N times per frame and means the decoded chunks — the flow ensembling’s mirror. Mechanics: Gumbel-max over the grammar-masked softmax (exact masked-softmax sampling, illegal ids can never win; aux value lines stay GREEDY), per-row CPU RNG streams keyed by frame identity + draw (stable_sample_rng, domain-separated from flow noise; corpus/batch/shard/device invariant), draws share ONE prefill via reference cache snapshot/restore (ARSuffixDecoder.cache_snapshot, sound under the append-only cache contract, restored ≡ fresh bit-exact) — covers Gemma AND Molmo2 trunks through the shared ARSuffixDecoder. Policy row _drawsN_tT, ar_temperature in report JSON, narrated pass skipped under sampling, loud guards everywhere; 9 CPU oracles (T→0 limit ≡ greedy; hot draws valid/deterministic/distinct; sampler batch-permutation invariance; mask escape impossible; prefill-reuse bit-exactness; keying component-sensitivity + domain separation; guard trips) — check.py 351 green. Pre-reg posted (754f4cb): T=1.0 pinned/untuned as primary (fairness rule: flow’s draws are untuned noise ⇒ AR samples its own untuned softmax; the #19 fit-on-probe option resolved AGAINST fitting), arms = A-s0 _draws10_t1 (local GPU) + molmo2 AR 40k endpoint (same stems, ~08-08), anchors = flow teacher 6.6232→5.365 / AR greedy 5.8026, cost gate = rate-measure ~200 frames → q4-subset fallback for BOTH arms if full-panel projects >24 GPU-h, falsified-if Δ_AR > +0.1. Blog built + Space pushed — link-fix lesson: the Space serves at mcobzarenco-fontaine-blog.static.hf.space (the bare .hf.space domain 404s); first Discord link was wrong, corrected in-channel 23:26Z. BABYSIT 23:23Z (molmo2 AR 40k): step 540/40k, loss 5.653 (ahead of the smoke’s 8.0@150 shape), 2.186 s/step live (better than the 2.55 smoke bound → ~24 h to 40k), vram_alloc_peak 66.67 GiB FLAT (rule ≤71), reserved ~71.3 GiB steady, grad norm 11.4, LR warming on schedule, 4 ranks alive, util 41–100%. OWNER EXCHANGE (caught at the babysit poll, both answered 23:25Z, conversational hold + 45-s Discord monitor since): 23:09Z “is 2.5 s per B12, i.e. 6× microbatches of 2?” → yes — s_per_step = one optimizer step = global batch 48; each rank runs B12 as 6 sequential 2-sample forward+backwards then the chunked allreduce + Adam (and live it beats the smoke at 2.19); 23:20Z “what’s a good use of the local GPU while molmo2 trains?” → recommended THIS instrument’s A-s0 arm (draws10_t1, pre-reg above) — launch in the next chained work session unless the owner redirects; any reply is steering. Queue: next (chained work session) → A-s0 AR draws10_t1 launch on the local GPU per the pre-reg (cost gate first ~200 frames); then π0.5 deep-read post (low-prio); arm A img280 HELD (fresh owner go required); molmo2 endpoint gets the same stems at its ~08-08 boundary. GPUs busy ×4 (box 40k, healthy) + local idle-pending-launch + CPU queue live → run_work_next armed; babysits on normal cadence, K1 anchors unchanged (launcher header + smoke shape).

Previous update 2026-08-06 23:03–23:1xZ (real date -u) — tick (babysit + conversational): THE MOLMO2 AR 40k IS LIVE — launched 22:57:08Z (fontaine_molmo2_ar_40k_ddp4, box tmux molmo2ar40k, wandb we57e8dh) and first-poll healthy: E1 banner EXACT (878 datasets / 38,571 episodes / 18,636,749 frames / dims 6/6), 4×100% util, vram_alloc_peak 66.67 GiB (rule ≤71), 2.33 s/step at step 40 (≲28 h to 40k), loss 16.11 → 14.46, grad norm 253 → 98, LR warming on schedule. This entry also back-fills the 21:0x–22:5xZ arc the spend-cap outage swallowed (commits exist, no now.md entries): rung 5 (6×2+zero1) and rung 6 OOM’d like their predecessors → mem-snapshot instrument built (BIJOU_MEM_SNAPSHOT, allocation-site attribution, true-torch-peak per log line, 42a202a..73159c7) → rung 7 (12×1) TRAINED but was rejected on the reserved-pool peak rule + 3.85 s/step ⇒ 43 h > F2 (1f9920b) → forensics snapshot NAMED the block: DDP reducer buckets, 13.6 GiB, allocated at construction — never at sync → rung 8 = 6×2 + zero1 + --chunk-grad-allreduce with NO DDP wrapper at all (fd8bc0e, one-time param broadcast + explicit per-step allreduce) → smoke GREEN on every gate (66.67 GiB flat, 2.52–2.55 s/step, loss 16→8.0 @150, eval + zero1 consolidated save exercised, rc=0) → finalization cells filled (fa3048e 22:56Z) → launch 22:57Z. HARNESS OUTAGE 22:1x–22:3xZ: monthly spend limit (429s killed two ticks at birth + the smoke-watch session); owner deactivated the cap 22:39Z. OWNER EXCHANGE: 22:39Z “what do you mean by rc?” sat 24 min unanswered (the outage’s tail) — answered 23:0xZ (rc = return code; it was 0) + posted the launch status + first-poll numbers; conversational hold held ~12 min on a Discord monitor after the reply. Kill gates (launcher header): NaN/inf; probe not below its @2500 value by 10k; probe > 25 sustained ×3 evals after 5k — kills only at save boundaries (every 2,500, first ~00:4xZ; evals every 500). Queue: next (chained work session) → AR sampled-draws eval instrument (ideas #19, owner ask, separate pre-reg — the GPU-busy window’s CPU item); then π0.5 deep-read post (low-prio); arm A img280 HELD (fresh owner go required). GPUs busy ×4 (box 40k) + local idle-by-design + CPU queue live → run_work_next armed; babysits on normal cadence, K1 curve anchors = the launcher header + rung-8 smoke (loss 8.0@150 as the early shape reference).

Previous update 2026-08-06 20:21–20:4xZ (real date -u) — tick (babysit, held through the smoke verdict): RUNG 4 (B12 2×6 + zero1) OOM’D AT STEP 1’S SECOND CHUNK FORWARD — AND THE CROSS-RUNG VRAM TRACES REWRITE THE LADDER’S MECHANISM; RUNG 5 (B12 6×2 + zero1) LAUNCHED 20:28Z. The 19:5x–20:0x “static ~77 GiB once Adam materializes” story was over-attributed: rung 4 died at 77.5 GiB BEFORE any optimizer step (no step lines at log-every 20 proved nothing; the vram trace does — 33.9 GiB init plateau → 81 GiB in ~6 s, one monotone climb, no step structure). Measured components (traces of rungs 1/3/4; rung 2’s sampler died at 4 lines, its “step 2 once Adam materialized” was inferred arithmetic): init static 33.9 (masters + bf16 weights + context), activations ~2.8/sample, autocast bf16 cache ~9.7 live during each forward, DDP fp32 grads +14.6 after the first chunk backward, Adam +29.1 unsharded at first step. ⇒ a 6-sample chunk’s forward with grads resident (48.5+9.7+~17 ≈ 75–77) OOMs in step 1 REGARDLESS of zero1; rung 3 (6×2) genuinely completed step 1 and died at step 2 when unsharded Adam landed. The fixes compose, each killing exactly one block: rung 5 = 6×2 + zero1 (2-sample chunks keep every forward in budget — proven by rung 3’s step 1; zero1 shards the Adam block that killed rung 3), predicted peak 71–73 GiB (~6 GiB margin); fallbacks 12×1, then bf16 grad buckets. Pre-reg §3 rungs 4+5 amendments recorded pre-verdict (rung-5 TODO cells open); launcher default flipped BACKWARD_CHUNKS 2→6; §2 plumbing line updated. Rung-4 corpse cleaned (ranks freed on their own this time, 4×0 MiB before relaunch; failed smoke save-dir rm’d). Discord: correction + mechanism + rung-5 note posted 20:30Z (my 20:19Z “2×6 should fit” was wrong — said so); no owner inbound this tick (last exchange closed 20:19Z). RUNG-5 VERDICT: see the postscript below once the boundary lands. Queue unchanged: next (chained work session) → rung-5 verdict → pre-reg finalization cells + launch TONIGHT iff green (owner steer stands); then AR sampled-draws eval instrument (ideas #19); arm A img280 HELD; π0.5 deep-read post (low-prio). GPUs busy (smoke) + CPU queue deep → run_work_next armed; the chained session owns the launch critical path.

*Previous update 2026-08-06 19:59–20:0xZ (real date -u) — tick (babysit, held through the smoke boundary): SMOKE RUNG 3 (B12 × 2-sample chunks) OOM’D AT STEP ~2 — THE CHUNK LADDER IS EXHAUSTED AND THE MECHANISM IS NOW FULLY MEASURED: the static budget alone is ~76–77 GiB/rank, so NO chunk size fits. Held the session through the verdict window (monitor on the box pane): rank 0 died at a forward RMSNorm with 77.46 GiB allocated by PyTorch — the rung-2 arithmetic (~63 GiB static) missed the bf16 weight copy (~9.7 GiB)

• CUDA/NCCL context. True per-rank static once Adam materializes: bf16 weights 9.7 + fp32 masters 19.4 + DDP fp32 grad buckets 14.6 + Adam moments 29.1 ≈ 73 + context ≈ 76–77 GiB on a 79.18 GiB card → ~2 GiB activation headroom; shrinking chunks was never going to close a static gap. Fix ranking posted to Discord (20:03Z): (1) ZeRO-1 optimizer sharding (ZeroRedundancyOptimizer — Adam moments 29.1 → 7.3 GiB/rank, static ~55 GiB, ~24 GiB headroom, B12 chunked 2×6 fits with margin, optimizer semantics EXACT); (2) bf16 grad buckets (halves 14.6, composable); (3) activation checkpointing #20 (does NOT close a static gap — follow-up only). Box cleaned this tick: hung NCCL peers torn down (rank 0 crashed, 5 peers held all 4 GPUs at 81 GiB — killed; 4×0 MiB verified), stale ctrl40k/statedrop tmux killed (jobs long done). Discord: no owner inbound (19:15Z cache/wandb/sampling message was answered 19:39Z; only unread was our own ftrig post); box GPUs now idle-pending-fix, local idle. Queue: next (chained work session) → ZeRO-1 (or equivalent) memory fix + re-smoke (B12 gate, same global batch 48) + pre-reg finalization cells (2026-08-06-prereg-molmo2-ar-40k.md TODO_SMOKE_*) + launch TONIGHT iff green — the owner’s molmo2-tonight steer stands; then AR sampled-draws eval instrument (ideas #19, owner ask, separate pre-reg); arm A img280 HELD; π0.5 deep-read post (low-prio). GPUs idle-pending-fix + CPU queue deep → run_work_next armed; the chained session owns the fix + launch critical path.*

Previous update 2026-08-06 18:41–19:0xZ (real date -u) — work session (chained, bounded): MOLMO2 WP4 ASSEMBLY SLICE LANDED + THE UNTRAINED-GEN PROBE (owner ask 18:18Z) ANSWERED SAME SESSION — the full multimodal compose works end-to-end on the real checkpoint, and the grounding read is a strong POSITIVE. The build (bijou/molmo2/model.py): (1) build_multimodal_mask — causal OR image-block, the shipped or_mask_function composition re-read from modeling_molmo2.py this session (any two image-typed positions mutually visible, THEN key padding excluded); (2) Molmo2Model compose — additive vision injection (+= at <im_patch> positions ONLY, count die-loud vs the backbone’s valid-token output, exactly the reference build_input_embeddings), logical positions under left padding; (3) cache-free greedy_generate (no KV cache exists under D1 — probe/parity tool); (4) load_model full-checkpoint loader. 5 new CPU oracles (mask vs brute-force reference semantics; additive injection; count-mismatch die-loud; left-pad invariance end-to-end — pad must leak through neither causal nor the bidirectional image block; greedy = own argmax + stop ids) — check.py 327 green. PROBE (fontaine/scripts/molmo2_untrained_gen.py, local idle GPU, bf16, real pipeline rig-frame → Collator → WP3 collator → WP4 compose, 878-id prompt / 820 image-typed at max_crops 1): raw continuation at the training position = [wrist camera|Image 2]<|im_end|> — a 9-token FORMAT ECHO of our bracket syntax, NO refusal (same under the full aux request); with the <|im_start|>assistant opener the raw trunk gives an accurate scene description — “stack of wooden coasters” = the disk stack ✓, “person holding a black electronic device with wires” = the operator’s hand on the teleop leader arm ✓, “two plastic objects” = orange boat + gripper finger ✓ — it declines the task only because it doesn’t share our naming (“toy boat”). Second frame (15000, overexposed) same shape. Night-and-day vs gemma4’s refusals; frames posted to Discord (composites banked reports/molmo2_probe_frame{100,15000}.png). Babysits 18:42/18:57Z: masked q4 eval @992→@3,872/4,301, ~160 f/min, box GPU 0 82% util → done ~19:0xZ, on schedule; GPUs 1–3 idle (smoke path clear); Discord polled ×3 (boot + checkpoint + close), no inbound. Queue: next (chained work session) → AR decoder arm (fast_embed + fresh head rows on the frozen-original-vocab split per the 18:1xZ freezing answer) + memory smoke (4.85B live trunk × 4 ranks, B32 gate) + AR 4×DDP pre-reg + launch iff green; then ftrig ship-rule application + arm C statedrop reads at the masked-eval boundary (~19:0xZ); arm A img280 HELD; π0.5 deep-read post (low-prio). GPUs busy ×1 (box GPU 0 finishing) + CPU queue deep → run_work_next armed per no-idle-pauses; the chained session owns the eval boundary + the AR-arm critical path.

Previous update 2026-08-06 18:39–18:4xZ (real date -u) — tick (babysit): masked q4 eval healthy and on schedule — @832/4,301 frames at 18:40Z (~160 f/min from the 18:35Z scan start), box GPU 0 at 82% util / 12.7 GiB, pgrep-alive → done ~19:0xZ, inside the predicted 19:0x–19:3xZ window; GPUs 1–3 idle (Molmo2 smoke unblocked), local GPU idle-by-design. Discord: no inbound; history check caught a 👍 reaction on our 18:37Z multi-view in-distribution answer (owner agreement, recorded per the reaction-steering rule — no queue change). Box hygiene: killed a stale watcher loop (pid 3820072) sleep-polling for the ctrl-eval npz under ~/flow-matching/reports/ — the ctrl eval ran in the ~/flow-matching-ctrl checkout and its artifacts were rsynced local, so that path never fills. Queue unchanged from 18:4xZ: next (chained work session) → WP4 assembly slice + untrained-gen probe (owner ask) + AR decoder arm + memory smoke + AR 4×DDP pre-reg + launch iff green; then ftrig ship-rule application + arm C statedrop reads at the masked-eval boundary (~19:0xZ); arm A img280 HELD; π0.5 deep-read post (low-prio). GPUs busy ×1 (box GPU 0) + CPU queue deep → run_work_next stays armed (marker present) per no-idle-pauses; the chained session owns the eval boundary and the tonight critical path.

Previous update 2026-08-06 18:15–18:4xZ (real date -u) — work session (bounded, conversational mid-session): MOLMO2 WP3 IS LANDED — the ChatML collator + native processor are in, gated BYTE-EXACT against the shipped trust_remote_code processor, and the FAST anchoring is recorded in the schema (4113167; the tonight critical path’s first block, owner-confirmed 18:12Z). The build: (1) bijou/molmo2/processor.py — op-for-op native port of the 4.x-pinned image pipeline (crop tiling + overlap margins + 2x2 pooling index + token layout under the shipped options: cols on high-res rows only, <low_res_im_start> marker); (2) bijou/encoders/molmo2.py — Molmo2Inputs + Molmo2InputsCollator, prompt format namespaced MOLMO2_PROMPT_FORMAT 1: images hoisted per the shipped template bytes, [kind camera|Image i] bracket groups bind camera kinds to the shipped labels, soft state token spliced inside the (<|im_end|>, \n) close, LEFT padding, bos=<|im_end|> (checkpoint convention), native tokenizers backend (segment assembly PROVEN equivalent to whole-string tokenization); (3) golden fixtures banked from the reference processor in its own transformers-4.57 side env (bank_processor_goldens.py, 3 cases: 480p mc1, two-camera rig, mc8 2x2 tiling) — ids / token-type mask / grids / pooling indices / pixels ALL EXACT; (4) FAST block base 152,064 (fast_block_base) recorded — the second extension block after the 128 image specials, embedding + fresh untied head rows decoder-owned. Operating point max_crops=1 → 410 image tokens/camera (the smallest layout inside the shipped distribution). 10 new CPU oracles, check.py 322 green, plan post §6 struck through for WP3. OWNER EXCHANGE (three messages, caught at the babysit poll + answered in-window): 18:18Z “show me what the UNTRAINED model generates on our exact training-formatted prompt (gemma4 gave refusals)” → acked, queued as the first consumer of the WP4 assembly slice (it doubles as the end-to-end prompt-path test); 18:34Z “is same-time multi-view in-distribution given video pretraining?” → answered with template receipts (separate image branch — Image N labels + 2x2 pooling, no timestamps — and the style list’s multi_image_ + mantis_instruct training tasks ⇒ non-sequential multi-image is trained; caveat: same-timestamp cross-VIEW binding is what the probes measure, not assume); 18:35Z “good luck with WP4” 🍀. Box state: arm C panel eval COMPLETED + banked ~18:2xZ (reports pulled at the boundary by the chained session; frozen reads stay with statedrop_results.py), masked q4 eval running on GPU 0 (@32/4,301 scan-warmup 18:35Z → done ~19:0x–19:3xZ), GPUs 1–3 idle — the Molmo2 smoke is unblocked. Local GPU idle (ftrig chain complete; ship-rule application queued). Queue: next (chained work session) → WP4 assembly slice (vision injection + bidirectional image mask + full-model compose) + untrained-gen probe (owner ask, post generations) + AR decoder arm (fast_embed + fresh head rows on the frozen-original-vocab split per the 18:1xZ freezing answer) + memory smoke (4.85B live trunk × 4 ranks, B32 gate) + AR 4×DDP pre-reg + launch iff green; then ftrig ship-rule application (likely diagnosis branch) + arm C statedrop reads at the masked-eval boundary; arm A img280 HELD (fresh owner go required); π0.5 deep-read post (low-prio). GPUs busy ×1 (box GPU 0 masked eval) + CPU queue deep → run_work_next armed per no-idle-pauses.*

Previous update 2026-08-06 18:09–18:2xZ (real date -u) — tick (conversational): OWNER STEERED THE SCHEDULE LIVE (18:10:13Z): “I want to run molmo2 tonight, let’s delay arm A” — ARM A IS HELD; the box belongs to Molmo2 AR tonight. The 18:1xZ plan (“arm A tonight, Molmo2 tomorrow”) is overridden at the decision point before any launch. Also answered the owner’s 18:09:30Z freezing question (both asked mid-window, caught by the 45-s conversational poll): for the original vocab BOTH sides freeze — wte.embedding [151,936] + shipped wte.new_embedding [128 image specials] + all original-vocab lm_head rows (Gemma rationale, gemma4.py:532; Qwen3’s untied head makes the implicit Gemma choice explicit) — trainable = the NEW FAST extension block (embedding rows [152,064, 153,090) + fresh untied head rows) + decoder layers + ln_f; aux-text reads the frozen shipped head, grads flow through it into the trunk. Replied 18:12Z with the split + the tonight plan: critical path compresses into the chained sessions — WP3 ChatML collator + FAST extension anchoring + AR decoder arm + memory smoke + pre-reg, gates HELD (smoke before launch; 4.85B live trunk × 4 ranks), pre-reg + launch tonight iff oracles + smoke green, else the diagnosis. Box state: arm C panel eval @22,432/25,800 at 18:11Z (~200 f/min → panel read ~18:3xZ, masked eval chains → GPU 0 free ~19:0x–19:3xZ; GPUs 1–3 ALREADY idle — the smoke need not wait). Local: ftrig chain’s panel-v2 forgetting guard @19,552/22,578 at 18:10Z → chain end ~18:1xZ; after-reads + pre-registered ship rule (rollout --check on @4k → upload + owner command, or diagnosis) stay with the chained work session. Exchange continued in-window: owner 18:12:34Z “Agreed. Let’s focus on WP3” (acked) + 18:13:34Z ChatML question (answered in-channel: ChatML = the <|im_start|>role…<|im_end|> Qwen-family convention; Molmo2’s template puts <|image|> placeholders BEFORE the conversation text — why the collator is a WP, not shared Gemma prompt code). FTRIG CHAIN LANDED THIS TICK — face-value after-reads (frozen ship rule stays with the work session): rig draws1 11.4872/3.1280 (before 11.3925/3.0903), rig draws10 11.2559/3.0066 (before 10.9854/2.9126) — NO improvement, both reads slightly WORSE; panel-v2 forgetting guard 5.7928/1.8985 (pre-finetune 5.6711/1.7059, small drift); state-copy rows byte-match banked (rig 12.0506/2.7702, panel 11.7639/2.5851). The in-run probe descent (13.43@500 → 12.43@2500) did NOT convert into holdout gains — the ship rule’s diagnosis branch looks live, but the pre-registered rule decides, not this tick. Queue (REORDERED per steering): next (chained work session) → Molmo2 WP3 collator + FAST anchoring + AR decoder arm + smoke + pre-reg (AR 4×DDP TONIGHT — top priority, owner-confirmed 18:12Z) + ftrig ship-rule application (likely diagnosis branch) + arm C statedrop reads at its boundary; arm A img280 HELD (launcher banked, pre-reg intact — launches only on a fresh owner go); π0.5 deep-read post + blog reorg (low-prio). GPUs busy ×1 (arm C box; local freeing as the ftrig chain exits) + CPU queue deep → run_work_next armed (18:06) per no-idle-pauses.

Previous update 2026-08-06 17:1x–18:1xZ (real date -u) — work session (bounded, then extended by TWO OWNER STEERING BURSTS, conversational mode held): MOLMO2 WP1 + WP2 BOTH LANDED WITH FULL HF PARITY IN ONE SESSION — the port is text+vision parity-clean and the owner has re-aimed phase 1 at AR-FIRST. (1) WP1 (bd5b7f9): pure-torch Qwen3 decoder (bijou/molmo2/text.py — fused-QKV GQA 32:8 hd128 1/√d, qwen3 per-head qk-norm pre-RoPE, fused-gate SwiGLU, untied embeds + 128-slot extension matrix, residual-tap protocol identical to Gemma’s), truncated-mount loader, tiny fixture, 9 CPU oracles; the flagged unknown died at first touch (rope_scaling_layers: null re-fetched). (2) OWNER 17:24/17:27Z (“how’s molmo2? check outputs vs transformers”) — parity harness built + run same hour on CPU fp32 (221 GB RAM takes both models; --with transformers==4.57.1, HF 5.x breaks the remote code): residual stream ≤1.5e-4 all 36 layers, logits ≤3.4e-5, greedy argmax 79/79, 15-layer mount BITWISE vs full prefix — PARITY PASSED, numbers Discord’d. (3) WP2 same session (20922af): vision.py op-for-op (25-block tower as shipped, taps [-3,-9] concat, masked 2×2 attention pooling, gated projector), 7 more oracles (312 green), vision parity 4.4e-7 relative on real processor inputs (725 image tokens; caught + documented: HF’s eager path DROPS the pooling mask — SDPA is the shipped semantics we mirror). (4) OWNER 17:51Z steering: AR-FIRST — deep case (their paired report Δ−2.69@2.5k ~8× noise, hosted now under /reports/ + nav renamed “Reports”; π0.5) → replied agreeing + proposed the FAST anchoring fix (1,026 ids ≥ Qwen3’s ~271 spare tail → SECOND trainable extension embedding block at [152,064, 153,090) + fresh untied head rows); plan post §6 amended (ack pending). Owner also asked re best-of-10 oracle HTML: answered — no HTML by construction (analysis-JSON product of the fairness instrument; offered a report page). Scheduling rec posted: arm A img280 still launches tonight at arm C’s boundary (no idle box), Molmo2 AR takes the whole box TOMORROW (WP3 collator + FAST anchoring + AR arm + smoke + pre-reg are the critical path — not tonight, gates held). Babysits: ftrig 4k DONE ~17:50Z (loss 0.028, probe 13.43@500 → 12.43@2500 descending, K1 far), chain → rig draws1+draws10 banked, panel-v2 forgetting guard @13,632/22,578 ~1,240 f/min → local chain end ~18:1xZ, next session owns the ftrig after-reads + pre-registered ship rule; arm C panel eval recovered (60→200 f/min) @21,472/25,800 → masked eval next → box boundary ~19:0x–19:3xZ (arm A launch per owner rec unless overridden). Queue: next (chained) → ftrig after-reads + ship rule (rollout –check on @4k → upload + owner command, or diagnosis) + box boundary (arm A launch runbook unchanged) + arm C statedrop reads + results post; CPU critical path → WP3 ChatML collator + FAST extension anchoring + AR decoder arm (owner-prioritized, AR 4×DDP pre-reg tomorrow) + π0.5 deep-read post + blog reorg (low-prio). GPUs busy ×2 + CPU queue deep → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 16:4x–17:1xZ (real date -u) — same work session, extended by an OWNER STEERING BURST (16:22–16:53Z, six messages — caught by the end-of-session poll; conversational mode held since): ALL FIVE ASKS DELIVERED SAME SESSION. (1) “What’s running / keep GPUs hot” — answered in-channel (arm C’s chained evals don’t create wandb runs; box GPUs 1–3 take arm A at the boundary; local GPU re-hot within the hour, see 4). (2) “Upload the SnapFlow student for local NFE rollouts + a command + make sure rollout works” — student step_030000 uploaded weights-only (FIRST artifact in fontaine-checkpoints), and the requested verification caught a real bug: the #18.2 stable noise-key default crashed EVERY flow rollout at first predict (KeyError: repo_id — live-rig observations have no dataset identity); fixed by pinning rollout to index keying (fresh noise per replan, the historical deployment semantics) + regression test; bijou.rollout gained --target-time {t,zero} mirroring eval’s 1-NFE switch; verified on the real student: --check predict ok (50,6), cold 2.5 s, async warm 2 ticks @30 Hz → SUSTAINABLE; command posted in-channel (63b044e, check.py 296 green). (3) “Standing rule: upload valuable checkpoints, no optimizers” — codified in charter §6 + wake-up memory; acted on immediately per (4b). (4) “NFE fine-tune on my rig datasets asap” — PRE-REGISTERED AND LAUNCHED SAME HOUR (pre-reg, live on the Space pre-launch): fontaine_flow_snapdistill_ftrig_4k_1xh100 — student-verbatim recipe + 5 deltas (rig-only data, init-from student, 4k steps, LR 1e-5, save 500), --distill snapflow CONTINUED so the shortcut field adapts with the velocity field; R0 before-reads banked first (rig holdout 3,647 frames, 1-NFE stable: student draws1 11.3925/3.0903, draws10 10.9854/2.9126 vs state-copy 12.0506/2.7702 — the un-tuned student barely beats copy on chunk and LOSES on first_mae on rig; the transfer gap is the whole case for this run); E1 banner exact (2 datasets/51 episodes/32,431 frames/ dims 6/6, strict student load), first-poll 100% util, 22.5 GiB, 0.49–0.51 s/step (E2 band), loss ~0.05 → 4k ~17:4xZ, chained after-reads (rig draws 1/10 + panel-v2 1-NFE forgetting guard) land ~18:0x–18:3xZ. (4b) “Review all previous checkpoints, upload the valuable ones” — inventory done, verdicts posted: ALL FIVE box AR 40k endpoints uploaded weights-only (s0/s1/s2/auxoff/statedrop; 6 runs now on the hub, optimizer-free verified); intermediates prune at boundaries, smoke checkpoints deleted, not uploaded. (5) “How does statedrop work?” — answered in-channel (mean-masking at collation via the shared mask_state_item primitive — train dropout and eval --mask-state can never drift; owner 👍). MEANWHILE arm C’s panel eval @10,752/25,800 at 16:56Z (~213 f/min) → panel read ~18:1xZ, masked eval after → box boundary (arm A launch) ~18:4x– 19:1xZ. Queue: next session → babysit ftrig (K1: probe > first read + 3.0 ×3 evals ≥1.5k) + box boundary when arm C’s chain ends (live-checkout pull → pytest → arm A launch per the 16:4x entry’s runbook) → ftrig after-reads + ship rule (rollout –check on @4k → upload + owner command, or the diagnosis) → arm C statedrop reads + results post; CPU next → Molmo2 WP1. GPUs busy ×2 (ftrig local, arm C eval box GPU 0) + CPU queue deep → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 16:04–16:4xZ (real date -u) — work session (chained, bounded): ARM C TRAINING COMPLETE AT 40k (~16:02Z) AND THE ARCH-BATCH LAUNCH PATH IS FULLY DE-RISKED — launchers banked, recipes machine-verified, F1 SMOKES BOTH GREEN AT B32 — arm A launches at the arm-C eval-chain boundary with zero improvisation left. (1) Arm C (fontaine_arb_rcond_statedrop80_40k_1xh100) finished its 40k schedule: final loss 3.6583, LR 1e-5 on schedule, formal final probe 10.8961@40000 — the launcher’s pre-registered final gate “probe < 10 @40k” FAILS by 0.90 (record-only here: p=0.8 may be too aggressive at this rung; the informative reads are the chained panel eval + masked q4 reliance eval, frozen assembly in statedrop_results.py). Chained panel eval live on GPU 0 (first-poll: 60–76% util, 12.6 GiB, warming 40→140+ f/min, 2,592/25,800 @16:25Z) → panel read ~18:3x–19:1xZ, masked eval after → chain end ~19:0x–20:0xZ, that session owns the launch + reads. (2) Arm A/B launchers + F1 smoke banked (f382629): teacher-verbatim recipe verified through the REAL bijou.train.parse_args vs the banked teacher@40k train_args (fontaine/scripts/arch_recipe_verify.py, 56 fields verbatim + 8 pre-registered deltas per arm) — the verify CAUGHT a real drift pre-launch (teacher trained --prompt-generate-bracket; first launcher draft omitted it, fixed); chained panel-v2 endpoint evals pinned heun30/draws1/--noise-key stable with stems per arch_batch_results.py. (3) F1 MEMORY SMOKE: BOTH ARMS PASS AT B32 — run this session from the HEAD-updated ~/flow-matching-ctrl throwaway on GPUs 1–3 (arm C’s eval owns GPU 0; live checkout untouched per never-sync-under-live-run; box-side pytest 295 green in the ctrl checkout first): arm A img280 peak 22,825 MiB, 0.87–0.91 s/step (F2: 40k ≈ 10 h ≪ 30 h gate → full 40k, no screen-rung); arm B fullresid peak 26,705 MiB, 0.54 s/step (~6 h; res-adapter banner 498.1M decoder params, grads flowing, loss curve tracks arm A’s). B32 stands for both arms; smoke rates are upper bounds (measured under arm-C-eval CPU contention). Class fix: smoke verdict lines now tee into the log (first run’s echoes died with the tmux pane; recomputed from the banked vram sampler logs, pulled local to reports/smoke_arch*). Lit slice taken (~15 min): IVRA (arXiv:2601.16207) banked into ideas #15 — training-free single-LM-layer patch-affinity injection, fits the #11 acuity-probe diagnosis; rung-(a) candidate if arm A leaves grounding headroom. Discord: no inbound ×3 polls (16:04/16:14 boot+babysit, 16:4x end). Queue: boundary session (~19:0x–20:0xZ, chained/tick-owned) → live checkout git pull --ff-only to ≥f382629 + box pytest re-verify → launch arm A via ~/launch_box_gpu123_fontaine_flow_archA_img280_40k_ddp3.sh (tmux, first-poll util+rate vs smoke 0.88 s/step; K1 babysits via arch_batch_results.py --k1-train-log) → pull arm C reports → statedrop_results.py frozen reads + results post → cleanup (~/flow-matching-ctrl, outputs/train/smoke_arch*, stale ~/launch_local_snapflow_distill* copies, ~/smoke_arch_ctrl.sh); CPU next → Molmo2 WP1 Qwen3 decoder port (bijou/molmo2/text.py, plan §3). GPU busy ×1 (arm C panel eval, box GPU 0) + CPU queue deep → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 15:43–16:0xZ (real date -u) — work session (chained, bounded): TWO DELIVERABLES — (1) #18.2 --noise-key DEFAULT FLIPPED to stable (d77ed58): the hold expired when the SnapFlow chain’s index-keyed stage-4 evals + npz addendum completed — CLI + BijouPolicy/SmolVLAEvalPolicy ctors now default stable, index retained permanently behind an explicit flag for historical reproduction, new default-pin regression test, check.py 295 green; arm A/B launchers written at the box boundary inherit stable as the arch-batch pre-reg requires. (2) OWNER STEERING 15:49Z (mid-session Discord poll caught it 6 s after posting — the class fix earning its keep): eval reports linked from posts + hosted on the Space — DELIVERED SAME SESSION (bbafaee): all 21 banked HTML eval reports + 9 frozen analysis JSONs uploaded to the blog Space under /reports/ (154 MB, curl-verified 200), new reports index page in the nav grouping every report by run, inline report links added to 6 results posts (SnapFlow ×3 endpoint reports, stable-key re-bank, box-batch, draws-fairness ×2, state-probe, flow-vs-AR), blog built + Space pushed, Discord headline with direct links posted 15:58Z; owner 👍’d the plan reply. Arm C babysits 15:50/15:55Z: @38,500→39,060/40k, TRAIN-ALIVE (pgrep 2), 66–78% util, 73.8 GiB, 0.374–0.384 s/step, loss 3.59–3.74 smooth, aux 0.50–0.57, LR decayed to 1.01e-5 exactly on schedule → 40k ~16:1xZ — the next chained session owns the boundary: code sync + stage-0 re-verify + F1 two-config smoke → arm A img280 launch + arm C statedrop reads + ~/flow-matching-ctrl cleanup. Local GPU idle-by-design. Discord: owner inbound 15:49Z (the reports ask, answered + delivered); no further inbound through 16:0xZ. Queue: box boundary (~16:1xZ, next session) → the launch sequence above; CPU next → Molmo2 WP1 Qwen3 decoder port (bijou/molmo2/text.py, plan §3, top CPU item). GPU busy ×1 (arm C box) + CPU queue deep → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 15:41–15:4xZ (real date -u) — tick (babysit): arm C inside the final 2.5k — @37,620/40k at 15:41Z, TRAIN-ALIVE (pgrep 2), 65% util (eval window), 73.8 GiB, 0.37–0.39 s/step, loss 3.58–3.74 smooth, aux 0.43–0.54, in-run probe holding the descended band: 10.85@36000 → 10.96@36500 → 10.83@37000 → 11.00@37500 (vs the 11.1–11.58 plateau @34–35.5k; K1 margin far), zero substitution lines → 40k ~16:1x–16:2xZ. Local GPU idle-by-design. Discord: no owner inbound (only unread was our own 15:40Z WP0 headline; history-checked, no new reactions) — the SnapFlow adoption ask stays open; any reply is steering. Queue unchanged from 15:4xZ: next (chained) → #18.2 --noise-key default-flip + Molmo2 WP1 Qwen3 decoder port (top CPU item); box boundary (~16:1x–16:2xZ) → code sync + stage-0 re-verify + F1 two-config smoke → arm A img280 launch + arm C statedrop reads + ~/flow-matching-ctrl cleanup. GPU busy ×1 (arm C box) + CPU queue deep → run_work_next armed (marker present, 15:40) per no-idle-pauses; the chained session owns the 40k boundary.

Previous update 2026-08-06 15:23–15:4xZ (real date -u) — work session (chained, bounded): MOLMO2 WP0 IS LANDED — the port’s first work package, one session after the plan, exactly as sequenced (7409df0): the trunk seam is extracted. The build: ObservationEncoder[I: BatchInputs, B: nn.Module] ABC now lives at the seam (bijou/interface.py — stream_geometries / inputs_collator / encode / param_groups, the docs/plan.md contract with the backbone passed by the composition root); KVCache is OUT of the seam (ObservationMemory.cache is opaque — trunk-private contract, ar_backbone isinstance-narrows); BijouModel[I, B] + the whole train-loop surface (DevicePrefetcher/ChunkedBatch/ChunkingCollator/ProbeSet/ build_probe_set/validate/BijouTrainStep) de-Gemma-typed, Gemma-only paths (ar_backbone suffix continuation, tensor-level encode_observation, save_checkpoint’s prompt schema) narrow LOUDLY; PromptKind.MOLMO2 reserved beside GEMMA4 with a refuse-until-WP4 loader arm (+ test). Impl-time decision the plan left open: StreamGeometry grows NO scaling field — under D1 the adapters absorb scale, it would be dead config with one legal value. Gates held exactly as pre-declared: check.py 294 green (was 293 + the new MOLMO2 refusal test), three CPU loss oracles bit-exact, no state-dict key changes, pyright clean. Plan post §6 sequence struck-through for WP0 (blog built + Space pushed); WP1 (Qwen3 decoder port) is now the top CPU item. Arm C babysits 15:24/15:38Z: @35,820→37,160/40k, TRAIN-ALIVE (pgrep 2), 73–99% util, 73.8 GiB, 0.374–0.39 s/step, loss 3.61–3.73 smooth, aux 0.45–0.49, and the in-run probe DESCENDED below the plateau band — 10.85@36000 → 10.96@36500 → 10.83@37000 (vs 11.1–11.58@34–35.5k; K1 margin far) → 40k ~16:1x–16:3xZ. Local GPU idle-by-design. Discord: no inbound ×2 polls (boot + 15:38Z babysit; history-checked) — the owner adoption ask from the SnapFlow results post is still open; any reply is steering. Queue: next (chained) → #18.2 --noise-key default-flip (small, unblocked) + Molmo2 WP1 decoder port (bijou/molmo2/text.py, plan §3); box boundary (~16:1x–16:3xZ) → code sync + stage-0 re-verify + F1 two-config smoke → arm A img280 launch + arm C statedrop reads + ~/flow-matching-ctrl cleanup. GPU busy ×1 (arm C box) + CPU queue deep → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 15:22–15:2xZ (real date -u) — tick (babysit): arm C healthy and inside the final 5k — @35,540/40k at 15:23Z, TRAIN-ALIVE (pgrep), 73.8 GiB, 68% util, 0.38 s/step, loss 3.70–3.81 smooth, aux 0.47–0.51, probe 11.3304@35500 (11.11–11.58 plateau band @34–35.5k unchanged, K1 margin far), zero substitution lines → 40k ~16:3xZ. Local GPU idle-by-design (SnapFlow arc complete and published). Discord: no inbound, no new reactions (history-checked; last 5 are our own posts through the 15:18Z results headline) — the owner adoption ask from the results post is still open; any reply is steering and outranks the queue. Queue unchanged from 15:3xZ: next (chained) → Molmo2 WP0 seam refactor (top CPU item) + #18.2 --noise-key default-flip (unblocked); box boundary (~16:3xZ) → code sync + stage-0 re-verify + F1 two-config smoke → arm A img280 launch + arm C statedrop reads + ~/flow-matching-ctrl cleanup. GPU busy ×1 (arm C box) + CPU queue deep → run_work_next armed (marker present, 15:20) per no-idle-pauses.

Previous update 2026-08-06 15:13–15:3xZ (real date -u) — work session (chained, bounded): THE SNAPFLOW RESULTS POST IS PUBLISHED — the #12 distillation arc closes public: parity-adopt + deployment headline, live on the Space, Discord’d with the owner adoption ask (results). All six TODO cells filled from the frozen analysis JSON (no judgment at write time): draws5 row 5.3918/1.6056; diversity read — mean-of-5 banks ~90% of the student’s total averaging gain (same fractional shape as the teacher’s 87%, at one-fifth the amplitude, 0.236 vs 1.258), student mean-of-5 already beats teacher mean-of-5 (5.3918 vs 5.5235), mean10 0.03 below the modal band per the report’s inside_modal_band: false; per-step horizon read — student below teacher at ALL 50 steps (crossover_step: null), delta widening monotonically −0.229@1 → −1.554@50, i.e. distillation compressed late-horizon error hardest (mean-collapse operating where draw spread is largest — the 08-05 flow-vs-AR divergence does NOT transfer to student-vs-teacher); v2 descriptive column 5.6711/1.7059 vs teacher 6.7151/1.9453 — margin −1.04, keying-robust; npz addendum ~27 min (14:43→15:10Z); adoption cell quotes the instrument verbatim + the concrete proposal (single draw = latency floor at 1 expert eval, mean-of-10 = quality mode at ~10, still 3× under one Heun-30 draw). Final s=t 7.6601 VERIFIED in the train log before shipping (step-30000 line). check.py 293 green → commit 119e12e → blog built + Space pushed → post URL live with draws5 numbers curl-verified → Discord headline + owner adoption ask posted 15:2xZ. Arm C babysit 15:1xZ: @35,000/40k, pgrep alive, 73.8 GiB, 0.373–0.385 s/step, probe 11.1057@35000 (11.11–11.58@34–35k, plateau band unchanged, K1 margin far) → 40k ~16:3xZ; the 0%-util instant was the step-35000 eval/save boundary, rate on-band. Discord: no inbound ×2 polls (boot + post-publish). Queue: next (chained) → Molmo2 WP0 seam refactor (top CPU item) + #18.2 --noise-key default-flip (NOW UNBLOCKED — the SnapFlow chain and addendum are complete); box boundary (~16:3xZ) → code sync + stage-0 re-verify + F1 two-config smoke → arm A img280 launch + arm C statedrop reads + ~/flow-matching-ctrl cleanup. Owner watch item: the adoption decision requested in-channel — any reply is steering. GPU busy ×1 (arm C box; local idle-by-design) + CPU queue deep → run_work_next armed per no-idle-pauses.

*Previous update 2026-08-06 15:11–15:2xZ (real date -u) — tick (babysit): THE SNAPFLOW FROZEN VERDICT IS IN — snapflow_results.py ran this tick on the complete input set (npz addendum banked 15:0xZ, local GPU idle at poll) and the pre-registered decision assembly fires PARITY / ADOPT-SIGNAL + DEPLOYMENT HEADLINE (reports/analysis__snapflow_distill_30k_k4l2.json): read 1 primary 1-NFE chunk 5.6036 ≤ adopt line 6.7732 (Δ vs teacher −1.02); read 2 grounding edge survives (first 1.7039 ≤ 1.9831, teacher 1.9331); read 3 deployment headline holds — mean-of-10 5.3675/1.5927 ≤ AR anchor 5.8026 (draws5 5.3918/1.6056; teacher draws10-heun30 5.3645/1.4242 — student matches chunk to 3 dp, first lags ~0.17; mean10 sits 0.03 BELOW the modal band [5.4, 5.6], flagged inside_modal_band: false, consistent with the flat draw-averaging curve = mean-collapse shape rather than surviving diversity — the INTERPRETATION cell belongs to the results post, instrument banked face-value only). The verdict’s own adoption line: the charter §2 cost caveat on the draws win closes — mean-of-10 @1-NFE costs ~10 expert evals, not 10×30 Heun steps → results post + owner adoption decision are the deliverable, skeleton already staged (posts/2026-08-06-snapflow-results.md, TODO cells). Arm C @34,500/40k at 15:13Z, TRAIN-ALIVE (pgrep 2), 65% util, 73.8 GiB, 0.374–0.381 s/step, loss 3.68–3.69 smooth, aux 0.46–0.48, probe 11.16@34000 (11.10–11.43 band @32.5–34k) — plateau band unchanged, K1 margin far → 40k ~16:3xZ. Local GPU idle-by-design (SnapFlow GPU arc complete; next local GPU work only via a new pre-reg). Discord: no inbound, no new reactions (history-checked; last 5 are our own posts through the 14:07Z Molmo2-plan headline). Queue: next session (chained) → fill + publish the SnapFlow results post (verdict cells from the analysis JSON, draw-averaging interpretation, blog build + Space push + Discord headline) → Molmo2 WP0 seam refactor (top CPU item); box boundary (~16:3xZ) → code sync + stage-0 re-verify + F1 two-config smoke → arm A img280 launch

• arm C statedrop reads + ~/flow-matching-ctrl cleanup. GPU busy ×1 (arm C box) + CPU queue deep → run_work_next armed per no-idle-pauses.*

*Previous update 2026-08-06 14:42–15:0xZ (real date -u) — tick (babysit): ALL THREE SnapFlow endpoint evals are in — draws5 landed 14:39Z at 5.3918/1.6056 (record-only, v1 panel index keying; state-copy rows byte-match banked 11.7848/2.6202) — and the draw-averaging curve is nearly FLAT: 5.6036 (draws1) → 5.3918 (draws5) → 5.3675 (draws10), a gain of only ~0.24 from 10× averaging vs the teacher’s ~1.26 (6.6232 → 5.365). Face-value shape (NO frozen interpretation — that’s snapflow_results.py’s job): consistent with the 1-NFE student’s draws being far less diverse than the teacher’s — each draw already sits near the posterior mean, i.e. the mean-collapse hypothesis from the fairness work, not surviving draw diversity. Local GPU was idle at 14:42Z (draws5 chain complete) → addendum npz eval launched this tick (tmux npzaddendum, eval_snapdistill_endpoint_1nfe_npz.sh, quiet-GPU guard passed, --noise-key index pinned): scoring @8,672/25,800 at 15:00Z, measured 1,280 f/min over a 45-s window (bursty-util-normal, 9.3 GiB) → done ~15:1xZ. Arm C @31,500/40k at 14:43Z, 0.37–0.376 s/step, TRAIN-ALIVE (pgrep 1), 63% util, 73.8 GiB, loss 3.72–3.85 smooth, aux 0.43–0.62, in-run probe 11.18@30000 → 11.42@30500 → 11.53@31000 (band-bouncing 11.2–11.5 after 11.26@27500 — plateau region, not a spike; K1 margin far) → 40k ~16:3x–17:3xZ unchanged. Discord: no inbound, no new reactions (history-checked; last 5 are our own posts through the 14:07Z Molmo2-plan headline). NOTE: a ~14:23–14:27Z chained session pre-staged the results-post skeleton (posts/2026-08-06-snapflow-results.md, draws5/verdict cells TODO)

• SUMMARY.md line but ended without committing or a now.md entry — skeleton committed with this tick (git-only; blog NOT rebuilt, the TODO skeleton is not reader-ready). Queue: next session (chained) → npz addendum boundary (~15:1xZ) → snapflow_results.py frozen reads (all inputs now exist) → fill + publish the results post → Molmo2 WP0 seam refactor (top CPU item); box boundary (~16:3x–17:3xZ) → code sync + stage-0 re-verify + F1 two-config smoke → arm A img280 launch + arm C statedrop reads + ~/flow-matching-ctrl cleanup. GPUs busy ×2 (npz addendum local, arm C box) + CPU queue deep → run_work_next armed per no-idle-pauses.*

*Previous update 2026-08-06 14:09–14:1xZ (real date -u) — tick (babysit): draws10 landed AT the boundary — held the session through the handoff and the draws5 chain kicked over clean. draws10 endpoint eval completed ~14:12Z: mean-of-10 chunk 5.3675 / first 1.5927 (record-only, v1 panel index keying; state-copy rows byte-match banked 11.7848/2.6202) — BELOW the AR deployment anchor 5.8026 and matching the teacher’s own full-panel mean-of-10 (5.365) to 3 dp, i.e. the 1-NFE student’s 10-draw deployment read is teacher-equivalent at face value; whether that reflects surviving draw diversity or mean-collapse is exactly what the draws5 read + snapflow_results.py frozen assembly will say — NO interpretation banked here. draws5 chained automatically (log 14:12Z, dataset-scan warming; ~25,800 frames at ~1,000 f/min → done ~14:4xZ, then all three endpoint evals are in). Arm C @27,500/40k at 14:12Z, 69% util, 73.8 GiB, TRAIN-ALIVE, in-run probe 11.2568@27500 (12.09@27000 → 11.26 — descending through the 12.0–12.4 band, K1 margin far) → 40k ~16:3x–17:3xZ unchanged. Discord: no inbound, no new reactions (history-checked; last 5 are our own posts through the 14:07Z Molmo2-plan headline). Queue unchanged from 14:1xZ: next session → draws5 finish → addendum npz eval (eval_snapdistill_endpoint_1nfe_npz.sh) → snapflow_results.py frozen reads + results post → Molmo2 WP0 seam refactor (top CPU item); box boundary (~16:3x–17:3xZ) → code sync + stage-0 re-verify

• F1 two-config smoke → arm A img280 launch + arm C statedrop reads + ~/flow-matching-ctrl cleanup. GPUs busy ×2 (draws5 local, arm C box)
• CPU queue deep → run_work_next stays armed (marker present, 14:08) per no-idle-pauses.*

Previous update 2026-08-06 13:55–14:1xZ (real date -u) — work session (chained, bounded): THE MOLMO2-4B PORT PLAN IS POSTED — the owner’s 12:03Z “get started in the background” steer now has its first deliverable, plan before code as asked (plan, primary sources fetched this session and distilled into docs/molmo2.md per the §6 post-cutoff rule — config.json, preprocessor_config.json, chat_template.jinja, modeling_molmo2.py all read today, plus a full bijou code-surface audit with file:line receipts). The design calls: residual-only conditioning (arm B’s path — learned adapters keep the expert contract at kv1×512 regardless of Qwen3’s GQA 32:8; no KVCache/layer-type/project_kv port) and a 15-of-36-layer mount (fractional depth 0.417 vs E2B’s mounted 15/35 = 0.429 — expert depth and the res0..res14 schedule carry over unchanged; SmolVLA/FLOWER early-layers support banked yesterday). One Qwen3-4B decoder port amortizes across Molmo2-4B / InternVL3.5-4B (the #10 base-vs-IT vehicle) / Qwen3-VL-4B. Phase 1 trains flow on the raw frozen prefix — no AR port, no vocab surgery (flow never touches FAST ids); the AR-adaptation −2.7 confound ships with any claim, comparison declared vs a matched raw-Gemma-prefix baseline. Five WPs (seam refactor → decoder port + HF parity → SigLIP tower → ChatML collator → schema/audit), §4 oracle suite gates any pre-reg; mounted footprint ~2.3B ≈ 4.7 GiB bf16; est. 4–6 CPU sessions — background work for the GPU-busy windows, exactly as promoted. check.py 293 green; blog built + Space pushed (post URL 200); Discord headline posted. Babysits 13:55/14:01/14:07Z: draws10 @21,632/25,800 (~1,000 f/min sustained, bursty-util-normal) → done ~14:1xZ, draws5 chains → all three endpoint evals land ~14:3x–14:4xZ; arm C @26,500/40k, 0.37–0.40 s/step, loss 3.73–3.95 smooth, aux 0.48–0.63 → 40k ~16:3x–17:3xZ unchanged. Discord: no inbound ×3 polls. Queue: next session → draws10/draws5 boundary → addendum npz eval (eval_snapdistill_endpoint_1nfe_npz.sh) → snapflow_results.py frozen reads + results post; box boundary (~16:3x–17:3xZ) → code sync + stage-0 re-verify + F1 two-config smoke → arm A img280 launch (eval names per instrument stems) + arm C statedrop reads + ~/flow-matching-ctrl cleanup; CPU next → Molmo2 WP0 seam refactor (now the top CPU item; plan §6 sequence) + dataset dedup script/manifest + #16 follow-ups + #18.2 default-flip (after the chain); ≥2 ✓. GPUs busy ×2 (draws evals local, arm C box) + CPU queue deep → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 13:50–13:5xZ (real date -u) — tick (babysit): both GPUs healthy; SnapFlow’s draws10 endpoint eval is past a fifth of the panel and running hot. draws10 @5,632/25,800 frames at 13:52Z, ~1,100 f/min measured over a 90-s window (73–82% util) → done ~14:1xZ, draws5 chains automatically after → all three endpoint evals landed ~14:3x–14:4xZ; the chained work session owns the addendum npz eval + snapflow_results.py frozen reads + results post. Arm C @26,040/40k at 13:52Z, 0.371 s/step train, 72% util, 73.8 GiB, loss 3.88–3.95 smooth, aux 0.59–0.65, in-run probe 12.02–12.40@24.5–25.5k (vs 12.68@20000 — descending band, K1 margin far) → 40k ~16:3x–17:3xZ unchanged (box boundary: code sync + stage-0 re-verify + F1 two-config smoke → arm A img280 launch per instrument stems + statedrop reads + ~/flow-matching-ctrl cleanup). Discord: no inbound (the one unread was our own 13:49Z work-session headline), no new reactions (history-checked). Queue unchanged from 13:5xZ. GPUs busy ×2 (draws evals local, arm C box) + CPU queue deep → run_work_next armed per no-idle-pauses.

*Previous update 2026-08-06 13:12–13:5xZ (real date -u) — work session (chained, bounded): ARCH-BATCH RESULTS INSTRUMENT BANKED BEFORE ANY DATA (oracle-before- data, 5th application) — AND THE CONTROL EVAL LANDED THROUGH IT THE SAME SESSION: teacher@40k = 7.1041/2.0720 on panel-v2 stable, INSIDE the Amendment 1 expectation band [6.7, 7.9]/[1.90, 2.35]. fontaine/scripts/arch_batch_results.py (f7c3238) encodes every frozen read of the pre-reg

• Amendments 1–2: paired per-frame Δchunk/Δfirst vs control with seeded frame-bootstrap CI95, adopt ≤−0.15 / grounding ≤−0.10 / falsified >+0.15 classification (sub-band class for measurable-but- under-floor), read-4 assembly (both-null ⇒ Molmo2-4B promotion; B adopt ⇒ upstream offer; A move ⇒ 560 rung justified), strict endpoint-semantics guards (heun30/draws1/stable/panel-v2 15,056+7,522 rows die-loud), and the K1 kill gate vs the teacher’s banked in-run probe curve (reports/teacher_artrunk40k_probe_curve. json, pulled from the box train log, 9.1306@5000 verified — babysits at arm launches run --k1-train-log). Five oracles green incl. v2 anchor reproduction 6.7151/1.9453 + state-copy 11.7639/2.5851 through this file’s OWN keep-mask semantics; 7 new CPU tests; check.py 293 green. Ctrl eval finished 13:47Z on box GPU 1 (throwaway checkout), artifacts rsynced local, --ctrl-only read + report cross-check OK — arm A can launch at the box boundary with zero improvisation left on the reads side (arm launchers MUST name endpoint evals per the instrument stems: …archA_img280…/…archB_fullresid…__step_040000__panel_v2_heun30_ draws1_stable). MEANWHILE SNAPFLOW CROSSED 30k (13:14Z) and its primary 1-NFE endpoint eval completed 13:42Z — RECORD-ONLY: chunk 5.6036 / first 1.7039 (v1 panel, index keying), past the 6.7732 adopt line by 1.17 and BELOW both the teacher’s own Heun-30 (6.6232/1.9331) and the AR anchor (5.8026); state-copy rows byte-match banked (11.7848/2.6202) — consistent with the fairness finding (1-NFE endpoint ≈ posterior mean; chunk MAE rewards mode non-commitment); the draws10/draws5 evals now running will show whether draw diversity survived distillation; frozen reads stay with snapflow_results.py once all three land (+ addendum npz eval at the chain boundary). Lit slice (~15 min, sanctioned): SmolVLA (~L/2 conditioning) + FLOWER (prunes 50% deep layers) banked as independent support for the early-layers story — arm B’s cheap follow-on if it nulls is an EARLY-ONLY schedule, not more layers; VLM4VLA (ICLR 26 survey): downstream VLA perf uncorrelated with VLM benchmarks ⇒ the Molmo2-4B port plan’s case must rest on vision-tower/grounding properties, not benchmark rank (ideas #11, d826a2f). Queue-debt cleared: the mid-session Discord-poll class fix is ALREADY in both prompts (verified work.md + tick.md) — struck from the queue. Babysits 13:12/13:28/13:42Z: arm C @23,860/40k, 0.391 s/step, loss 4.03, aux 0.51 descending → 40k ~16:3x–17:3xZ; SnapFlow draws10 eval warming. Discord: no inbound ×3 polls. Queue: next session → SnapFlow draws10/draws5 babysit → addendum npz eval (eval_snapdistill_endpoint_1nfe_npz.sh) → snapflow_results.py frozen reads + results post; box boundary (~16:3x–17:3xZ) → code sync + stage-0 re-verify + F1 two-config smoke → arm A img280 launch (eval names per instrument stems) + arm C statedrop reads + ~/flow-matching-ctrl cleanup + stale ~/launch_local_snapflow_distill…sh copy cleanup; CPU next → Molmo2-4B port plan (owner-promoted) + dataset dedup script/manifest + #16 follow-ups + #18.2 default-flip (after the chain); ≥2 ✓. GPUs busy ×2 (SnapFlow draws local, arm C box; box GPU 1 freed 13:47Z) + CPU queue deep → run_work_next armed per no-idle-pauses.*

*Previous update 2026-08-06 13:03–13:2xZ (real date -u) — tick (conversational): OWNER STEERED ARM A LIVE (12:59Z, two messages): 560 soft tokens is too many for 480p sources, try 280 — ADOPTED, Amendment 2 posted + live on the pre-reg (pre-reg). Replied 13:03Z with the agreeing pixel math (640×480 native; the processor upscales to hit budgets — 280 ≈ 1.4× linear / ~33×33 native px per token, 560 ≈ 2× / ~23×23, so 560’s marginal tokens are the most interpolated; 280 also halves wall cost ~12–16 h and shrinks the FLOPs-vs-grounding confound). Arm A := fontaine_flow_archA_img280_ 40k_ddp3 (--max-soft-tokens 280); 560 demoted to a follow-on rung contingent on a positive 280 read; F2 chain = 280 → 10k-screen; cost ~25–35 GPU-h. Blog built + Space pushed (Amendment 2 verified live). DISCOVERY on the box: the prior session had already launched the teacher@40k control eval at 13:02:41Z (tmux ctrl40k) — its first attempt crashed at plan-load (bcbf101’s SamplePlan refuses version-2 plans, .crashed-1303Z preserved), relaunch runs from the throwaway ~/flow-matching-ctrl checkout at HEAD (59dac60 fix; live checkout untouched under arm C per never-sync-under-live-run); healthy @672/22,578 frames at 13:09Z, 99% util, ~100 f/min warming → done ~14:x–16:xZ; its uncommitted launcher edits are committed with this tick. SnapFlow @29,520/30k at 13:10Z (0.48–0.51 s/step, loss 0.035–0.039) → 30k ~13:14Z, stage-4 endpoint evals chain automatically (1-NFE euler-1: draws 1 primary, then 10, 5; index keying by design — #18.2 flip stays parked until they finish). Arm C @22,000/40k at 13:10Z, 0.38–0.40 s/step, 94% util, loss 3.93–4.02, aux 0.53–0.61 descending, probe 12.56–13.37@21–22k band (vs 12.68@20000; not catastrophic, K1 margin far) → 40k ~16:3x–17:3xZ. Queue: **chained work session (armed) → SnapFlow endpoint-eval babysit

• addendum npz eval + snapflow_results.py frozen reads + ctrl-eval babysit/reads**; CPU next → arch_batch_results.py instrument + Molmo2-4B port plan (owner-promoted) + dataset dedup script/manifest + #16 follow-ups + #18.2 default-flip (after the chain) + mid-session Discord-poll class fix; box boundary (~16:3x–17:3xZ) → code sync + stage-0 re-verify + F1 two-config smoke at 280 + arm A img280 launch + arm C statedrop reads + ~/flow-matching-ctrl cleanup; ≥2 ✓. GPUs busy ×3 (SnapFlow local, arm C + ctrl eval box) + CPU queue deep → run_work_next armed per no-idle-pauses; conversational window held past the owner’s 12:59Z messages (replies + amendment posted, no further inbound through 13:2xZ).*

*Previous update 2026-08-06 12:49–12:5xZ (real date -u) — tick (babysit): both runs healthy; SnapFlow’s 30k boundary is ~25 min out. SnapFlow @27,300/30k at 12:50Z, 99% util, 0.48–0.52 s/step, loss 0.038–0.041 → 30k + chained endpoint evals ~13:15–13:3xZ (next session owns the boundary: endpoint evals + addendum npz eval + snapflow_results.py frozen reads

• teacher@40k control eval on idle box GPU 1). Arm C @20,020/40k (halfway) at 12:50Z, 73.8 GiB, 62% util (eval window), loss 4.02 smooth, aux 0.61 descending, in-run probe 12.6835@20000 (16.64@8500 → 12.68@20000, monotone descending) → 40k ~16:3x–17:3xZ unchanged; box GPUs 1–3 idle as planned (GPU 1 reserved for the control eval next session). Discord: no inbound, no new reactions (history-checked; last 5 are our own posts through the 12:48Z link fix). Queue unchanged from 12:5xZ: next session (~13:1xZ) → SnapFlow 30k endpoint evals + addendum npz eval + frozen reads + teacher@40k control eval; CPU next → arch_batch_results.py instrument + Molmo2-4B port plan (owner-promoted) + dataset dedup script/manifest + #16 follow-ups + #18.2 default-flip (after the chain) + mid-session Discord-poll class fix; box boundary (~16:3x–17:3xZ) → code sync + stage-0 re-verify + F1 two-config smoke + arm A launch + arm C statedrop reads; ≥2 ✓. GPUs busy + CPU queue deep → run_work_next armed per no-idle-pauses.*

*Previous update 2026-08-06 12:12–12:5xZ (real date -u) — work session (bounded): ARM B’S RESIDUAL-STREAMS IMPLEMENTATION LANDED WITH ALL FIVE PRE-LAUNCH ORACLES GREEN — the F1 critical path is clear (the two-config memory smoke needs arm B’s config to EXIST, so arm A could not launch before this; pre-reg pre-launch gate). The build: --conditioning-streams residual in bijou.train — the encoder exports raw post-layer hidden states res0..res14 (ObservationMemory.residuals, new TextModel tap API), and the flow expert projects them through learned per-layer adapters that mirror TextAttention.project_kv byte-for-byte in convention (RMSNorm → bias-free K/V proj → learned k_norm / scale-less v_norm → keys RoPE’d at logical positions) so the produced streams are contract-identical to K/V exports and the SuffixBlocks are UNTOUCHED. Key design point: adapters live DECODER-side (expert.safetensors, res_adapters.res{i}.*) and attach OUTSIDE the no-grad prefix encode (FlowDecoder.attach_residual_streams, called once per observation in BijouModel.encode/encode_observation) — trainable under the frozen trunk, once-per-observation cost at eval. Real-config count 23.62M adapter params ✓ (pre-reg ≈23.6M; kv_heads 1 × head_dim 512, schedule res0..res14 1:1 ascending). Oracles (i)–(v) as 11 CPU tests (tests/test_residual_streams.py): stream contract + padding- orientation invariance (the kv streams’ own gate, applied to the adapters), trunk bitwise-frozen through a real optimizer step, grads reach every adapter param (adaRMS zero-gate-at-init subtlety caught and documented — perturbed heads test the PATH), checkpoint round-trip with no flags + strict weight load, K/V path untouched (no adapter keys in kv-mode state_dicts, no raw taps in kv-mode memories; legacy checkpoints load via setdefault back-compat). check.py 285 green (three CPU loss oracles included, bit-exact). SCHEDULE CORRECTION vs the 12:05Z queue: F1 + arm A launch move from ~13:1xZ to the arm-C 40k boundary (~16:3x–17:3xZ) — F1’s drop-together rule smokes BOTH configs before ANY arm launches, and arm B’s code syncs to the box only at that boundary (never under live arm C); the 13:1xZ session should instead run the teacher@40k control eval on idle box GPU 1 (pre-registered, box code bcbf101 suffices — stable keying predates it; panel-v2 plan JSON is a data push, not code). Owed at the boundary sync: box stage-0 re-verify + F1 two-config smoke → arm A launch. Babysits 12:12/12:37Z: SnapFlow @24,440→26,020/30k, 0.48–0.52 s/step, loss ~0.038–0.042 → 30k + chained endpoint evals ~13:1x–13:3xZ; arm C @17,920/40k, 0.375–0.378 s/step, 83% util, loss 4.03–4.11 smooth, aux 0.62 descending → 40k ~16:3x–17:3xZ. Discord: no inbound. Queue: **next session (~13:1xZ) → SnapFlow 30k endpoint evals

• addendum npz eval + snapflow_results.py frozen reads + teacher@40k control eval on box GPU 1**; CPU next → arch_batch_results.py instrument (oracle-before-data, 5th application) + Molmo2-4B port plan (owner-promoted) + dataset dedup script/manifest + #16 follow-ups + #18.2 default-flip (after the chain) + mid-session Discord-poll prompt fix (class debt); box boundary (~16:3x–17:3xZ) → code sync + stage-0 re-verify + F1 smoke + arm A launch + arm C statedrop reads; ≥2 ✓. GPUs busy (SnapFlow local, arm C box) + CPU queue deep → run_work_next armed per no-idle-pauses.*

Previous update 2026-08-06 12:05–12:2xZ (real date -u) — tick (conversational): OWNER STEERED THE ARCH BATCH LIVE (12:02–12:05Z, three messages) — ARM 0 IS DROPPED; Amendment 1 posted + live on the pre-reg (pre-reg). The steering: (1) 12:02Z agreed on arms A (img560) + B (full-residual); (2) 12:03Z “get started on Molmo2-4B in the background too … quite an involved implementation piece” → the port is PROMOTED to the CPU queue now, independent of the batch verdict (first deliverable: port plan — processor/tokenizer/vision-tower mapping, stream-export points, memory budget — posted before any code; both-null branch rule unchanged); (3) 12:05:46Z “on arm 0, we have a good enough control in ar 100k … what do you think?” → answered 12:09Z: AR-100k is cross-family (wrong control for ±0.15 flow-side paired reads; rides along as context row), but the instinct is right — control := teacher’s own step_040000, VERIFIED on the box before amending: completed 40k schedule (train_args.steps=40000, LR decayed to 1e-5 at 40k; step_080000 was a resume-extension), seed 0 MATCHED to arms (the pre-reg’s “teacher used seed 1” line was wrong — seed 1 is the SnapFlow run; struck), eff-96 (2×48 vs 3×32, topology-only), in-run probe curve banked (168 evals, 9.1306@5000) → K1 re-anchors to it at matched steps. One panel-v2 control eval (~1–2 GPU-h) replaces the 8–10 GPU-h arm-0 retrain; F1 smoke shrinks to two configs; cost ~25–40 GPU-h, ~1–1.5 d wall; launch order A → B. Amendment 1 live (blog built + Space pushed, URL 200); NOTE: the 12:02/12:03Z owner messages had been cursor-consumed by the prior session’s 12:03Z poll but never recorded — recovered via history (the standing history-check earned its keep). Babysits 12:05/12:13Z: SnapFlow @22,900/30k, 0.48–0.51 s/step, loss ~0.04, s=t 7.5233@22500 (flat band, kill line 9.6755 far) → 30k ~13:0xZ + chained endpoint evals ~13:1x–13:3xZ; arm C @16,640/40k, 0.373–0.377 s/step, 70% util, 73.8 GiB, loss 4.27 smooth, aux 0.69 descending → 40k ~16:3x–17:3xZ. Queue: next session (~13:1xZ) → SnapFlow 30k endpoint evals + addendum npz eval + snapflow_results.py frozen reads, THEN F1 two-config smoke + teacher@40k control eval + arm A launch on GPUs 1–3 (owner look satisfied — steering received and amended, no further wait); CPU next → arm-B residual-streams impl + 5 oracles + arch_batch_results.py instrument + Molmo2-4B port plan (NEW, owner-promoted) + dataset dedup script/manifest + #16 follow-ups + #18.2 default-flip (after the chain) + mid-session Discord-poll prompt fix (class debt); box → arm C 40k → statedrop reads; ≥2 ✓. GPUs busy + CPU queue deep → run_work_next armed; conversational window held ~10 min past the owner’s last message.

Previous update 2026-08-06 11:49–12:0xZ (real date -u) — work session: ARCHITECTURE BATCH #1 PRE-REGISTERED — the owner’s 11:44Z multi-GPU steering is now a posted pre-reg, Discord’d for a look before launch (pre-reg). Design: 3 sequential DDP3 runs on box GPUs 1–3, stage-2 family (flow h1024 adaRMS expert on the FROZEN bijou_arb_rcond_100k_ddp4/step_100000 trunk — best lineage, conditioning-side is where both levers live), 40k steps, B32/rank ×3 = eff-96 (teacher-matched), panel-v2 + stable keying (first pre-reg under both adoptions), seed 0 all arms: arm 0 fontaine_flow_arch0_base_40k_ddp3 (teacher recipe verbatim, own-baseline), arm A …archA_img560… (--max-soft-tokens 560 — processor-native rung MEASURED today on the real processor: budgets {70,140,280,560,1120}, patches scale exactly linearly; 480p-upscale caveat stated; fallback 280 on the 30-h rate gate), arm B …archB_fullresid… (res0..res14 hidden-state streams, learned per-layer K/V projections ≈23.6M params replace kv4/9/14; impl + 5 oracles owed pre-launch, code syncs to box ONLY at arm C’s boundary). Frozen reads: paired vs arm 0, adopt-lever iff Δchunk ≤ −0.15 CI95-excl-0, grounding iff Δfirst ≤ −0.10; both-null promotes the Molmo2-4B trunk swap to the next multi-GPU pre-reg. Gates: F1 3-config memory smoke before arm 0 (OOM ⇒ whole batch drops batch together, never per-arm), F2 arm-A rate, K1 probe > arm0+3.0 @≥5k. Cost ~35–50 GPU-h, ~1.5–2 d wall; explore class (≥20% budget). Blog built + Space pushed (post URL 200), SUMMARY.md line added, ideas #11/#17 updated, check.py 274 green. Babysits 11:49/12:03Z: SnapFlow @22,100/30k, 0.48 s/step, loss ~0.043 → 30k + chained endpoint evals ~13:1x–13:3xZ; arm C @16,000/40k, 0.375 s/step, loss 4.28, aux 0.63 → 40k ~16:3x–17:3xZ. Discord: no owner inbound ×3 polls (11:49/11:52/12:03Z — mid-session polls honored per the owed class fix). Queue: next session (~13:1xZ boundary) → SnapFlow 30k endpoint evals + addendum npz eval + snapflow_results.py frozen reads, THEN F1 smoke + arm 0 launch on GPUs 1–3 (owner look window ≈1.5 h by then; no steer = proceed per the 11:46Z exchange); CPU next → arm-B residual-streams impl + oracles + arch_batch_results.py instrument (oracle-before- data, 5th application) + dataset dedup script/manifest + #16 follow-ups + #18.2 default-flip (after the chain) + mid-session Discord-poll prompt fix (class debt); box → arm C 40k → statedrop reads; ≥2 ✓. GPUs busy + CPU queue deep → run_work_next armed; sleep-poll skipped (owner quiet since 11:44Z, >10-min window closed — ticks own the channel per the boot contract).

*Previous update 2026-08-06 11:44–11:5xZ (real date -u) — tick: OWNER REPLIED AT 11:44:18Z (4 s before the poll) — THE 5-DECISION LIST IS ANSWERED + NEW STEERING: a multi-GPU run aimed at FUNDAMENTAL ARCHITECTURE CHANGES (owner examples: new trunk / full residual streams rather than few exported layers / bigger images = more tokens per image — “really just examples”). Decisions: (1) E4B paused (owner floated smaller batch/no-accum as alternative — answered in-channel: batch-independent floor ~110 GiB/rank, Adam m/v never allocated at peak 81.0/81.6; ZeRO-1 is the real lever, queued behind the architecture run); (2) panel-v2 ADOPTED for all new pre-regs + owner asks: dedup the whole dataset and upload to hub? — replied: yes, as a versioned NEW dataset (community_curated_v1_dedup, no overwrite), dedup script + manifest staged as a CPU item, deltas posted before upload, one paired train arm before it becomes default recipe; (3) ES ADOPTED as diagnostic column — “why never headline” answered (deployment consumes one draw; AR’s ES degenerates to ~MAE so cross-family ES headlines flatter the stochastic family); (4) stage-2b not addressed → stays parked behind #11 per our rec; (5) GPUs 1–3 tenancy SUPERSEDED by the architecture ask. Explained #11 in-channel (grounding front; owner’s examples ARE #11, bolder) and proposed: next pre-reg = paired arms (a) bigger images/more visual tokens + (b) full-residual conditioning, same trunk, DDP on box GPUs 1–3, panel-v2; trunk swap (Molmo2-4B) as its own follow-on; pre-reg posted for a look before launch — owner asked for preference-or-proceed, proceeding with 1+2 unless steered. Babysits 11:44–11:46Z: SnapFlow @20,160/30k, loss ~0.04, 0.48–0.50 s/step → 30k

• chained endpoint evals ~13:2x–13:3xZ unchanged; arm C @14,620/40k, 0.374–0.377 s/step, 72% util, 73.8 GiB, loss 4.28 smooth, aux 0.60 descending → 40k ~16:3x–17:3xZ unchanged. Queue (NEW ORDER, steering- driven): CPU next → architecture pre-reg draft (arms a+b, THE work item) + dataset dedup script/manifest (staged, deltas before upload) + #16 follow-ups + #18.2 default-flip (after the chain) + mid-session Discord-poll prompt fix (class debt); local → SnapFlow 30k boundary ~13:2x–13:3xZ → addendum npz eval → snapflow_results.py frozen reads; box → arm C 40k ~16:3x–17:3xZ → statedrop reads; box GPUs 1–3 → architecture run once pre-reg posted (+ owner look). ≥2 ✓. GPUs busy + CPU queue deep → run_work_next armed; conversational mode held ~10 min past last owner message per the boot contract.*

Previous update 2026-08-06 11:2x–11:4xZ (same work session, extended) — OWNER STEERING CAUGHT LATE AND ANSWERED: two 10:15–10:16Z messages (GPU- utilization question + request for a pending-decisions list + overnight summary) surfaced only at the 11:25Z end-of-session poll — this session held the harness lock through the probe boundary, so no tick polled the channel in between. Class fix owed: long work sessions must poll Discord at every babysit checkpoint, not only at boot/end (prompt edit queued as CPU debt). Replied 11:26Z in three structured posts: (1) honest utilization answer — local ~98%, box GPU 0 busy (arm C), box GPUs 1–3 mostly idle since the E4B no-launch, ~42% box aggregate since 17Z; cause = the E4B follow-on decision outstanding + anti-goal rule, not missing ideas. (2) Five pending decisions posted with recs: E4B follow-on (rec: drop → #11 grounding arms, ZeRO-1 queued), panel-v2 adoption (rec: adopt for new pre-regs), ES column (rec: adopt as diagnostic), stage-2b (rec: park behind #11), GPUs 1–3 tenancy (3× #11 arms or arm-C seed replicates, ~1 h from a go). (3) Overnight high-level summary. Sleep-polled ~15 min after replying (11:26–11:42Z), no owner response yet — handed back to ticks per the ~10-min-silence rule. NEXT SESSIONS: owner replies to the decision list are the top watch item — any answer is steering and outranks the queue.

Previous update 2026-08-06 09:4x–10:5xZ (real date -u) — work session: TWO DELIVERABLES — (1) #18.5 RIG-ROLLOUT SAFETY GATE LANDED (the first-physical-run blocker, deep-dive findings 8+9): new lerobot-free bijou/rollout_safety.py wired into bijou.rollout — clamp mandatory (--max-relative-target positive/finite or the arm does not move; --unclamped explicit opt-out; contradiction dies), first-obs envelope assert (per-joint q01..q99 half-band-widened, 15° floor, mean±3σ fallback; wrong stats / ticks-vs-degrees / uncalibrated arm die loud with a per-joint table; dim≠6 = wrong-embodiment), camera kinds now MIRROR TRAINING (annotation_stamp + camera_kinds_of via --stats-dataset; unstamped/hash-mismatch → “unknown” exactly as training rendered; --camera-kind NAME=KIND validated override; the name heuristic survives only datasetless) — 22 new CPU tests, --check exercised on the real flow-80k checkpoint, check.py 274 green (e95b9ef). (2) SNAPFLOW @10k 1-NFE PROBE READ (record-only, pre-registered): chunk_mae 5.9222 / first_mae 1.8193 on the stride-7 subset — kill line 9.6755 passed by 3.75, and the 1-NFE distill at ONE-THIRD training BEATS the teacher’s own Heun-30 read (6.676/1.928, same frames, pairing certified by state-copy rows to 4 dp). The s=t drift (8.03@10000, flat 7.8–8.4 band) is DECONFIRMED as a 1-NFE proxy — it measures the velocity mode, not the one-step mode. Probe ran on box GPU 1 (expert-only 1.8G push — teacher backbone already on-box byte-identical, sha256-verified; box code bcbf101 has the 1-NFE switch, no code sync under live arm C; one relaunch after a tmux-PATH miss, ~20 min wall total); artifacts pulled local (reports/eval__snapdistill__step_010000__probe_s7_1nfe_euler1.json). Lit slice TAKEN (~15 min, debt cleared): one-step fallback menu banked into #12 — OFP self-distillation, MeanFlow-VLA (2603.01469, kills the consistency constraint), “Let It Be Simple” (2606.05737, high-noise training alone). Babysits through the session: SnapFlow @11,500+/30k, ~0.49 s/step, loss ~0.04, s=t 8.17@11500 → 30k + chained endpoint evals ~13:2x–13:3xZ unchanged; arm C @8,500+/40k, ~0.37 s/step train, in-run probe 24.05@4500 → 22.29@5000 → 16.64@8500 descending, 40k ~16:3x–17:3xZ unchanged. Discord: no inbound. Queue: local → SnapFlow babysit → 30k + chained endpoint evals ~13:2x–13:3xZ → addendum npz eval → snapflow_results.py frozen reads (endpoint adopt-signal ≤ 6.7732 now LIKELY on the probe prior); box → arm C babysit → 40k ~16:3x–17:3xZ → statedrop reads ~19:xZ–21:xZ (box step_010000 staging cleanable at that boundary); CPU next: #16 follow-ups + #18.2 default-flip (after the chain); ≥2 ✓. GPUs busy (SnapFlow local, arm C box) + CPU queue non-empty → run_work_next armed per no-idle-pauses; the chained session babysits to the 30k boundary.

Previous update 2026-08-06 09:35–09:3xZ (real date -u) — tick (babysit): both runs healthy; the SnapFlow s=t drift has FLATTENED — 8.3344@5000 → 8.3609@5500, +0.03 over the last 500 steps vs +0.40 the window before, sitting ~1.76 over the teacher anchor 6.5997 (record-only; the informative read stays the @10k 1-NFE probe, kill line 9.6755). SnapFlow @5,500/30k at 09:35Z, 100% util, 0.475–0.51 s/step, loss ~0.042, grad norm ~0.3 → 10k probe boundary ~10:1x–10:2xZ unchanged (quiet-GPU decision: box GPUs 1–3 idle, checkpoint push standing option), 30k ~13:2x–13:3xZ. Arm C @5,000/40k at 09:36Z, 0.371–0.376 s/step, 66% util (eval window), 72.5 GiB, loss 4.91 smooth, aux 0.82, in-run probe 27.78@3500 → 27.17@4000 → 24.05@4500 descending — 40k ~16:3x–17:3xZ unchanged. Discord: no inbound (the one unread was our own 09:35Z work-session headline; history-checked, no new reactions). Queue unchanged: local → SnapFlow babysit (s=t watch; 10k probe decision ~10:1x–10:2xZ) → 30k + chained endpoint evals ~13:2x–13:3xZ → addendum npz eval → snapflow_results.py reads; box → arm C babysit → 40k ~16:3x–17:3xZ → statedrop reads ~19:xZ–21:xZ; CPU next: #18.5 rig-rollout safety gate + #16 follow-ups + #18.2 default-flip (after the chain); ≥2 ✓. GPUs busy (SnapFlow local, arm C box) + CPU queue non-empty → run_work_next armed per no-idle-pauses; the chained session takes the 10k-probe decision and the next CPU item.

Previous update 2026-08-06 09:13–09:4xZ (real date -u) — work session: SNAPFLOW’S ENDPOINT RESULTS INSTRUMENT IS BANKED BEFORE ITS DATA — the box-batch oracle-before-data pattern, FOURTH consecutive application — fontaine/scripts/snapflow_results.py encodes every frozen read of the SnapFlow pre-reg + Amendment 1: the @10k probe kill line (teacher probe 6.6755 + 3.0 = 9.6755, strictly >), endpoint adopt-signal (1-NFE chunk ≤ 6.7732), falsification (> 7.1232), grounding edge (first ≤ 1.9831), deployment headline (mean-of-10 ≤ 5.8026, modal band [5.4, 5.6]), the per-step horizon read (flow_vs_ar_paired protocol — oracled to byte-match its banked curve) and the panel-v2 descriptive column (reproduces 6.7151/1.9453 from the teacher npz). Banking early caught a REAL gap: the running launcher’s chained stage-4 endpoint evals dump JSON+HTML only — no npz — so the pre-reg’s promised per-step read had NO data source; editing a live bash script is unsafe, so the addendum eval_snapdistill_endpoint_1nfe_npz.sh (staged, quiet-GPU-guarded, --noise-key index pinned explicitly per the d9dd385 lesson) re-runs the primary with --dump-predictions at the boundary after the chain (~30–40 min). Strict semantics guards refuse doctored endpoint JSONs (steps≠1 / heun / target_time t / stable keying / draws mismatch / subset-as-panel all die loud); oracles (a)–(e) all green on banked data with zero SnapFlow endpoint bytes in existence; 8 new CPU tests; check.py 252 green (4d48120). STANDING NOTE: bijou.eval’s --noise-key default must stay index until the SnapFlow chain’s stage-4 evals execute at 30k (they inherit the default at run time and the registered comparators are index-keyed); the default flip is #18.2 follow-on debt for AFTER the chain. Babysits 09:13/09:31Z: SnapFlow @5,000/30k, 100% util, ~0.48 s/step, step_005000 saved → 10k probe boundary ~10:1x–10:2xZ; s=t divergence 7.74@2000 → 7.12@4000 → 7.93@4500 → 8.33@5000 — drifting up ~1.7 above the teacher anchor, record-only but now the top watch item (kill line 9.6755 is probe-@10k 1-NFE, not this s=t read; SnapFlow’s claim is endpoint parity, mid-run drift is in-model for consistency training — the 10k probe is the informative read). Arm C @4,760/40k, 0.373 s/step, 86% util, loss 4.98 smooth, aux 0.82, in-run probe 27.8→27.2→24.1 descending — 40k ~16:3x–17:3xZ unchanged. Discord: no inbound ×2 polls. Queue: local → SnapFlow babysit (s=t watch; 10k probe decision ~10:1x–10:2xZ — box GPUs 1–3 idle, checkpoint push standing option) → 30k + chained endpoint evals ~13:2x–13:3xZ → addendum npz eval → snapflow_results.py reads; box → arm C babysit → 40k ~16:3x–17:3xZ → statedrop reads ~19:xZ–21:xZ; CPU next: #18.5 rig-rollout safety gate + #16 follow-ups + #18.2 default-flip (after the chain); ≥2 ✓. GPUs busy (SnapFlow local, arm C box) + CPU queue non-empty → run_work_next armed per no-idle-pauses; the chained session takes the 10k-probe decision and the next CPU item.

Previous update 2026-08-06 09:0x–09:1xZ (real date -u) — tick (babysit): both runs healthy; ARM C’S 40k BOUNDARY RE-PROJECTED ~16:3x–17:3xZ (was ~12:3x–12:4xZ) — the 0.37 s/step projection ignored the ~4-min in-run eval probes. Measured directly: arm C trains at 0.378 s/step but each 500-step eval costs ~3.7 min wall (step-3000 eval timed 09:04:44→~09:08:2x), effective ~1.0–1.15 s/step so far — and A-s0’s own checkpoint history confirms this is SIBLING-NORMAL, not a slowdown (17:15Z→01:17Z, ~8 h for the identical 40k + 80 evals; its first 5k also ran ~1.06 s/step effective before averaging down to 0.72). Arm C @3,100/40k at 09:09Z, loss 5.25 smooth (21.7→5.25), aux ~0.9, 65–68% util during eval, 72.5 GiB; in-run evals 45.2→31.6→34.2→28.7→28.8 by step 2500 — in-family with A-s0 at the same steps (24.3 @2500; the gap is the expected p=0.8 masking difficulty), descending. Panel + masked reads move ~15:3xZ → ~19:xZ–21:xZ. SnapFlow local @2,780/30k at 09:11Z, 0.43–0.51 s/step, ~0.55 effective incl. evals+saves (measured 09:06→09:11: 620 steps/333 s over an eval+save boundary — SnapFlow’s evals are cheap, unlike the AR arms’), loss ~0.04, grad norm ~0.3; s=t divergence: 7.5682@500 → 6.9939@1000 → 7.6521@1500 → 7.7359@2000 — oscillating ~1σ-ish above the teacher anchor 6.5997, record-only, far from the teacher-probe+3.0 kill line. Revised: 30k ~13:2x–13:3xZ (SnapFlow now finishes FIRST, no longer co-timed with arm C); step_010000 1-NFE probe boundary ~10:2xZ — the chained session takes the quiet-GPU decision (box GPUs 1–3 idle, checkpoint push standing option). Discord: no inbound, no new reactions (history-checked; last 5 are our own posts through 08:32Z). Queue unchanged: local → SnapFlow babysit (s=t watch; 10k probe ~10:2xZ) → 30k + endpoint reads ~13:3xZ+; box → arm C babysit → 40k ~16:3x–17:3xZ → panel + masked reads through the banked instrument ~19:xZ–21:xZ; CPU next: #16 rig-transfer follow-ups + #18 debt; ≥2 ✓. GPUs busy (SnapFlow local, arm C box) + CPU queue non-empty → run_work_next armed per no-idle-pauses; the chained session takes the 10k-probe decision and the next CPU item.

Previous update 2026-08-06 08:5x–09:1xZ (real date -u) — work session (chained): ARM C’S RESULTS INSTRUMENT IS BANKED BEFORE ITS DATA — fontaine/scripts/statedrop_results.py encodes all three frozen reads of the state-dropout pre-reg plus the E3 probe gate and the full verdict assembly (adopt-default / free-hardening-lever / mechanism-inert-kill / p=0.3-screen branch / falsified), oracled on the banked A-s0 npz with zero arm-C bytes in existence. The box-batch pattern, third time: oracle (a) anchor reproduction through this file’s own pooling (A-s0 7.7966/3.9422, panel state-copy 11.7848/2.6202, q4-subset state-copy first 2.4316 — all three sibling-instrument semantics confirmed byte-compatible); (b) degenerate C:=A-s0 → read 1 exactly 0 / CI [0,0] and the neutral-adopt path composes; (c) synthetic known effects — 1.05× error inflation → COSTS verdict at the exact predicted +0.05×frame-MAE delta with the p=0.3 branch, 0.95× → HELPS, 6.2× masked inflation → capability “failed” ≥15 → the pre-declared MECHANISM-INERT kill, 1.5× → strong+sanity → hardening-lever adoption, probe-final 10.5 → E3 gate blocks all adoption; (d) misaligned masked index → hard abort. 4 new CPU tests (tests/test_statedrop_results.py — capability boundaries, every verdict branch incl. the inclusive band edges, known-delta and degenerate analyze math); check.py 244 green. The ~12:3x–12:4xZ arm-C boundary is now zero-improvisation: defaults point at the chained eval’s output names, --probe-final takes the train log’s last in-run probe. Babysits 08:53/09:03Z: SnapFlow @1,800/30k, 0.47–0.48 s/step, 87–98% util, loss ~0.043; in-run s=t divergence: 7.5682@500 → 6.9939@1000 → 7.6521@1500 — oscillating around the teacher’s level (stable-key anchor 6.5997), record-only, far from the teacher-probe+3.0 kill line. Arm C @2,760/40k, 0.37 s/step, 73% util, loss 21.7→5.38 smooth, aux ~0.9. Discord: no inbound ×2 polls. Queue: local → SnapFlow babysit (s=t watch; 10k record-only 1-NFE probe ~10:0xZ needs a quiet GPU — box GPUs 1–3 idle, checkpoint push is the standing option) → endpoint reads ~13:xZ; box → arm C babysit → 40k boundary → panel + masked reads through the NEW instrument ~15:3xZ (pulled earlier at 0.37 s/step: ~12:4xZ + evals); CPU next: #16 rig-transfer follow-ups + #18 debt; ≥2 ✓. GPUs busy (SnapFlow local, arm C box) + CPU queue non-empty → run_work_next armed per no-idle-pauses; the chained session takes the 10k-probe decision and the next CPU item.

Previous update 2026-08-06 08:37–08:5xZ (real date -u) — tick (babysit): SNAPFLOW DISTILL IS TRAINING — both launch gates passed and the run is FAR ahead of budget: ~0.49 s/step steady → 30k lands ~12:5xZ, not the 12–20 h estimate. Held the session through the fresh-launch critical window: gate (b) drift eval completed (2,458 frames, step0-extended vs banked flow npz frame-MAE drift 0.01451 < 0.05 → GATE (b) PASSED; gate (a) had re-passed at launch), train started 08:43Z (train_fontaine_flow_ snapdistill_h1024_30k_1xh100.log), first-poll rule met at steady state (92–100% util, 0.491–0.503 s/step, 22.4 GiB; distill loss ~0.038 flat with tiny grad norms — expected from identity init under warmup), and the first in-run s=t divergence reading landed: eval_chunk_mae 7.5682 @step 500 (record-only watch; the only kill line is the catastrophic teacher-probe+3.0). Revised timeline: step_010000 (the record-only 1-NFE probe boundary, needs a quiet GPU) ~10:0xZ, step_030000 + chained endpoint evals ~12:5x–13:xZ — nearly co-timed with box arm C’s 40k boundary. Box arm C healthy on its second poll: step 1,480/40k at 08:38Z, 0.374 s/step, 77% util, 69.8 GiB, loss 21.7→5.65 smooth → step_040000 ~12:3x–12:4xZ, panel + masked-reliance reads after. Discord: no inbound, no new reactions (history-checked; last 5 are our own posts through the 08:32Z re-bank+SnapFlow headline). Queue unchanged: local → SnapFlow babysit (s=t watch; 10k probe when a quiet GPU appears — box GPUs 1–3 are idle, checkpoint push is an option) → endpoint reads ~13:xZ; box → arm C babysit → 40k boundary → panel + masked reads ~15:3xZ→ pulled EARLIER if arm C holds 0.374 s/step (~12:4xZ + evals); CPU next: arm-C results instrument prep (oracle before data, box-batch pattern) + #16 follow-ups; ≥2 ✓. GPUs busy (SnapFlow local, arm C box) + CPU queue non-empty → run_work_next armed per no-idle-pauses; the chained session takes the results instrument and the 10k-probe decision.

Previous update 2026-08-06 07:51–08:4xZ (real date -u) — work session (chained): THREE MOVES IN ONE SESSION — #9 STATE-DROPOUT ARM PRE-REGISTERED AND LAUNCHED ON THE IDLE BOX; #18.2 STABLE-KEY RE-BANK ADOPTED (flow anchor 6.5997); SNAPFLOW DISTILL LAUNCHED ON THE FREED LOCAL GPU. (1) The state-probe branch rule cashed in: --state-dropout landed (bcbf101 — shared mask_state_item primitive with the eval probe so semantics can never drift; p=0 bitwise-inert, all three CPU loss oracles exact, check.py 240 green, SnapFlow stage-0 re-verified), pre-reg posted, then arm C fontaine_arb_rcond_statedrop80_40k_1xh100 launched 08:10Z on box GPU 0 (idle since the E4B no-launch; A-s0 recipe verbatim + --state-dropout 0.8, seed 0, 40k; E1 selection lines byte-match A-s0’s, banner p=0.8 ✓; first-poll: 91% util, 66.3 GiB, 0.386–0.395 s/step steady — E2 met; loss 21.7→6.5 by step 500; step_040000 ~12:2xZ, chained panel + masked-reliance evals land reads ~15:3xZ). (2) Flip re-bank ADOPTED at the 08:30Z boundary (results): controls bitwise ✓, stable-key chunk 6.5997 inside [6.4882, 6.7582] (Δ −0.0242 ≈ 1σ_draw), first 1.9355; stable is now the quoted keying for all new flow numbers, ledger re-banked, #18.2 closed. (3) SnapFlow distill launched 08:30Z (tmux snapdistill) on the GPU the flip freed — after a pre-launch catch: the launcher had inherited the TEACHER’s bijou-dev wandb project (READ-ONLY mainline, §7) + bijou_ name prefix via the teacher-verbatim copy; fixed to fontaine/fontaine_flow_snapdistill_h1024_30k_1xh100 with wandb_project pinned as a named verify delta (d9dd385) so teacher-verbatim can never silently re-inherit a mainline write target. Gate (a) identity oracle 6/6 bit-exact ✓; gate (b) drift eval scoring at session end (train starts on pass; ~12–20 h wall to 30k + endpoint evals). Discord: no inbound ×3 polls; pre-reg + re-bank headlines posted. Lit slice ~10 min taken (ThinkProprio 2602.06575, Cloak 2606.22836 → banked into #9/#11). Queue: local → SnapFlow babysit (in-run s=t divergence watch; 10k record-only probe when a quiet GPU appears; endpoint reads ~tomorrow) → draws-fairness ES column + panel-v2 + stage-2b + E4B follow-on awaiting owner steer; box → arm C babysit → 40k boundary ~12:2xZ → panel + masked reads ~15:3xZ (results instrument prep = next CPU work item, oracle before data per the box-batch pattern); ≥2 ✓. GPUs busy (SnapFlow local, arm C box) + CPU queue non-empty (arm-C results instrument, #16 follow-ups) → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 07:48–07:5xZ (real date -u) — tick: flip re-bank healthy and running HOT — @1,792/25,800 frames at 07:50:09Z, measured 480 f/min over a 60-s window (fastest this panel has run; prior evals 130–280 f/min), util bursty (99–100% bursts / 0% inter-batch gaps) but throughput is the decider → scoring lands ~08:3x–08:4xZ, AHEAD of the launch-time ~09:2x–09:3xZ estimate. Reads at the boundary: adopt the stable-key anchor iff chunk_mae inside band [6.4882, 6.7582] AND state-copy/AR control rows bitwise-match the banked npz. Discord: no new messages, no new reactions (history-checked; last 5 are our own posts, latest the 07:45Z fairness-results headline). Queue unchanged: local → flip re-bank reads (~08:4xZ, pulled in ~45 min) → SnapFlow distill (launch-ready, needs the GPU the flip frees) + #9 state-dropout pre-reg (CPU, sanctioned); box → idle awaiting owner steer (E4B follow-on + panel-v2 3 decisions + stage-2b + ES-column adoption); ≥2 ✓. GPU busy (flip re-bank) + CPU queue non-empty (#9 pre-reg, re-bank boundary now <1 h out) → run_work_next armed per no-idle-pauses; the chained work session takes the #9 pre-reg and the re-bank boundary.

Previous update 2026-08-06 07:20–07:5xZ (real date -u) — work session: FAIRNESS READS IN — THE UNFAIR-PENALTY SIGNATURE FIRED ON ALL FOUR PRE-REGISTERED READS: chunk MAE is measurably punishing flow for committing to modes (results, report reports/analysis__draws_fairness_k4l2.json). Probe completed 07:39Z (2,458/2,458, zero interventions after the 06:57Z relaunch); E1 gate passed (draw-0 re-decode drift 0.0145 < 0.05; degenerate draws=1 oracle re-run green before the npz was opened). The reads: (1) mean-of-10 5.4113/1.3975 on the probe subset — cross-checks the chain’s full-panel 5.365; (2) best-of-10 3.8597, 2.01 BELOW AR’s paired 5.8680 — forgive mode choice and flow wins big; (3) paired deficit monotone across dispersion quartiles 0.23→0.60→0.87→1.42 (q4 = 6.2× q1, Spearman +0.13); (4) energy score: flow 5.9308 vs AR 8.7696 — flow wins the strictly proper score while losing single-draw MAE on the same frames. Honest residual stated: deficit positive even in the tight quartile (+0.23), win rate < 0.5 everywhere — partly artifact, NOT wholly; ES is now the candidate distributional column for comm-holdout flow rankings (adoption = owner decision, posted). σ_draw direct = 0.02367 — SUPERSEDES the 0.0159 model pin (1.49×) but both floors hold (reopen_floors: false) → re-bank band [6.4882, 6.7582] and SnapFlow adopt ≤ 6.7732 both numerically UNCHANGED (sigma_draw_direct.py self-oracles green; pooled-level cross-estimator 0.02522 inside the χ²₉ band). Then, per the mantra (GPU freed 07:39Z): #18.2 STABLE-KEY FLIP RE-BANK LAUNCHED 07:41Z (tmux stablekeyrebank, ~/eval_flow80k_stablekey_rebank.sh — NEW launcher with the σ_draw gate asserted in-launcher; quiet-GPU guard passed; first-poll rule: scoring @32/25,800 at 07:46:46Z, 99% util → full-panel reads ~09:2x–09:3xZ: band + bitwise state-copy/AR controls). check.py 235 green; ideas #1/#12/#18.2 updated; blog built + Space pushed (post URL 200); Discord posted 07:4xZ (no inbound traffic ×2 polls). Queue: local → flip re-bank reads (~09:2x–09:3xZ: adopt iff inside band AND controls bitwise) → SnapFlow distill (launch-ready, needs the GPU the flip frees) + #9 state-dropout pre-reg (CPU, sanctioned); box → idle awaiting owner steer (E4B follow-on + panel-v2 3 decisions + stage-2b + now ES-column adoption); ≥2 ✓. GPU busy (flip re-bank) + CPU queue non-empty (#9 pre-reg, re-bank reads ~1.7 h out) → run_work_next armed per no-idle-pauses; the chained work session takes the #9 pre-reg in the babysit window.

Previous update 2026-08-06 07:18–07:2xZ (real date -u) — tick: relaunched fairness probe healthy past halfway — @1,312/2,458 frames at 07:19:26Z, 100% util, log fresh (~60–90 f/min through this stretch; the pre-crash run took ~28 min wall for the same 2,458 frames) → scoring done ~07:3xZ, chained in-launcher CPU fairness reads open right after (E1 gate: draw-0 re-decode of the banked single-draw, drift < 0.05; direct σ_draw vs the 0.0159 pin). Discord: no new messages, no new reactions (history-checked; last two are our own 06:16Z state-probe results + 06:58Z crash-fix posts). Pre-staged SUMMARY.md line for the draws-fairness results skeleton committed with this tick (the skeleton itself landed in da9ec6a; mdbook drops unlisted files — line belongs with it). Queue unchanged: local → fairness reads (~07:3xZ, chained in-launcher) → noise-key flip re-bank (band final) → SnapFlow distill + #9 state-dropout pre-reg (CPU); box → idle awaiting owner steer (E4B follow-on + panel-v2 3 decisions + stage-2b); ≥2 ✓. GPU busy (probe endgame) + CPU queue non-empty (fairness reads ~15 min out, state-dropout pre-reg) → run_work_next re-armed (driver had consumed the 06:5xZ marker) per no-idle-pauses; the chained work session takes the probe boundary + reads.

Previous update 2026-08-06 06:52–07:0xZ (real date -u) — tick: FAIRNESS PROBE CRASHED AT THE MERGE — THE MIRROR OF THE 04:4xZ BUG — FIXED, RELAUNCHED 06:57Z (reads slip ~06:5x → ~07:3xZ). All 2,458 frames scored, then merge_shards IndexError from the OPPOSITE direction of a433db9: this was the first –dump-draws-WITHOUT—dump-predictions eval through the merge path — cli.py pre-creates empty per-policy dump_predictions lists even when the flag is off, and the 2,458-row dump_index permutation was applied to them; a433db9 guarded only the dump_draws side. Fix da9ec6a: same empty-means-off guard at the call site + mirror regression test — check.py 235 green (the commit also lands the PREVIOUS session’s pre-staged reads tooling: draws-fairness results-post skeleton, sigma_draw_direct.py + its tests). Crash log preserved (.crashed-0652Z); no banked numbers touched (crash was post-scoring, pre-write). Probe relaunched 06:57Z (same launcher, quiet-GPU guard passed, tmux fairnessprobe); first-poll rule CONFIRMED in-session: scoring @32/2,458 at 07:03:30Z, 99% util — probe done ~07:1x–07:2xZ, chained reads ~07:2x–07:3xZ. Discord: no new messages, no new reactions (history-checked); crash+fix+slip posted 07:0xZ. Queue unchanged: local → fairness reads (now ~07:3xZ, chained in-launcher: E1 draw-0 re-decode gate drift < 0.05 + direct σ_draw vs the 0.0159 pin) → noise-key flip re-bank (band final) → SnapFlow distill + #9 state-dropout pre-reg (CPU); box → idle awaiting owner steer (E4B follow-on + panel-v2 3 decisions + stage-2b); ≥2 ✓. GPU busy (probe re-run) + CPU queue non-empty (fairness reads ~30 min out, state-dropout pre-reg) → run_work_next armed per no-idle-pauses; the chained work session takes the probe boundary + reads.

Previous update 2026-08-06 06:30–06:3xZ (real date -u) — tick: fairness probe healthy on its first tick-poll — @672/2,458 frames at 06:29:50Z (log fresh, 99% util confirmed at launch + still 99% this poll), ~160 f/min → probe lands ~06:4xZ, chained in-launcher CPU fairness reads ~06:4x–06:5xZ (E1 gate: draw-0 must re-decode the banked single-draw, drift < 0.05; direct σ_draw measurement cross-checks the 0.0159 pin before the SnapFlow/re-bank bands are consumed). Discord: no new messages, no new reactions (history-checked; last 5 are our own posts, latest the 06:16Z probe-results headline). Queue unchanged: local → fairness reads (~06:5xZ) → noise-key flip re-bank (band final) → SnapFlow distill (needs the GPU the probe frees) + #9 state-dropout pre-reg (CPU, sanctioned); box → idle awaiting owner steer (E4B follow-on + panel-v2 3 decisions + stage-2b); ≥2 ✓. GPU busy (probe) + CPU queue non-empty (reads ~15 min out, state-dropout pre-reg) → run_work_next armed per no-idle-pauses; the chained work session takes the probe boundary + reads.

*Previous update 2026-08-06 06:03–06:3xZ (real date -u) — work session: STATE-RELIANCE PROBE READ — SUPPORTED: aux-off leans harder on the state shortcut, D = Δ_first(B) − Δ_first(A-s0) = +0.702, CI95 [0.498, 0.916] — 14× the pre-registered 0.05 threshold (results, instrument fontaine/scripts/state_probe_results.py, report reports/analysis__state_probe_q4.json). Arm 4 (B masked) landed 06:06Z; the reads instrument was built + 3-way oracled in the ~15-min window before it (degenerate all-zero/CI[0,0]; synthetic 1.10× inflation → known-magnitude D detected AND common-effect cancellation proven; misaligned-index abort — first oracle draft’s “row shuffle” was itself caught as NOT a pairing break, since pairing is by index). All pre-registered execution oracles green at read time: state-copy/ -norm byte-match banked on all 4 arms (pairing + mask isolation bitwise), truth/valid byte-identical, mask_state recorded, plan sha256 asserted. Secondary chunk read agrees (+0.389 [0.106, 0.674]); all three banked expectations came true (Δ_chunk +15.3–16.4 every arm — absolute Δs stay descriptive per the stated OOD limitation; no masked arm beats intact state-copy first; D > 0). Story now coherent with box-batch: B’s better intact first_mae (3.43 vs 3.87 subset) is bought with heavier state reliance — aux supervision shifts representation toward vision. Branch rule fired: #9 state-DROPOUT promoted, owed its own pre-reg (ideas #9/#11 updated; GAP progress-conditioned Δ_first cut noted as discussion material). check.py 229 green; blog built + Space pushed (post URL 200; post added to SUMMARY.md — mdbook silently drops unlisted files, caught at the 404); Discord posted 06:2xZ. Then, per the mantra (GPU went idle 06:06Z): FAIRNESS PROBE LAUNCHED 06:24Z (tmux fairnessprobe, ~/eval_flow80k_drawsprobe_dump.sh, quiet-GPU guard passed; draws=10 heun-30 stride-7 2,458 frames + --dump-draws; first-poll rule: 99% util, ~160 f/min → probe + chained CPU fairness reads land ~06:4x–06:5xZ; E1 gate: draw-0 must re-decode banked single-draw, drift < 0.05; its direct σ_draw measurement is the pre-declared cross-check on the 0.0159 pin). Discord: no inbound. Queue: local → fairness reads (~06:5xZ, chained in-launcher) → noise-key flip re-bank (band final) → SnapFlow distill (launch-ready, needs the GPU the fairness probe frees); NEW queue-refill item: #9 state-dropout pre-reg (CPU, sanctioned by the fired branch rule); box → idle awaiting owner steer (E4B follow-on + panel-v2 3 decisions

• stage-2b); ≥2 ✓. GPU busy (fairness probe) + CPU queue non-empty (fairness reads ~20 min out, state-dropout pre-reg) → run_work_next armed per no-idle-pauses.*

Previous update 2026-08-06 05:42–06:0xZ (real date -u) — work session: σ_DRAW FINALIZED = 0.0159 — BOTH PRE-REGISTERED FLOORS BIND; the SnapFlow launch’s last CPU-side blocker is closed (amendment, instrument fontaine/scripts/sigma_draw_finalize.py, report reports/analysis__sigma_draw_finalization.json). The draws chain dumped pooled JSONs only (no per-draw npz), so the pin is model-based from the mean-of-N curve at matched solver: element error bias + s·η (draw noise rank-1 within frame — worst case for pooled variance), calibrated on (N=1, N=10); the gaussian-bias family predicts the held-out N=5 point to 0.087% (stress families rejected at 2%/46%; fitted systematic asymptote √c ≈ 5.21° nearly solver-independent). σ_draw = std_η(frame-MAE)/√F_eff (F_eff = 16,488.5 valid-weighted): heun-30 0.0140, heun-10 0.0159 (pin = max; 1-NFE endpoint leans low-step). Bands now numeric before any dependent data: SnapFlow adopt iff 1-NFE chunk_mae ≤ 6.7732 (3σ = 0.048 < 0.15 floor); stable-noise re-bank band [6.4882, 6.7582] (σ < 0.045 floor). Verdict family-independent — even the a-priori-max pure-noise reading (0.040) stays under both floors; the fairness probe’s --dump-draws direct measurement supersedes if larger (lands before either dependent eval opens). Amendment blockquotes added to both amended pre-regs; ideas #12/#18.2 updated. Oracles per charter: MC end-to-end on the calibrated family (m(N) <0.5%, pooled σ <15%), LS recovery to 1e-10, flat/inverted clamp, posted-number input asserts + 7 new tests — check.py 229 green. Blog built + Space pushed (post URL 200); Discord posted 06:00Z. Probe babysits 05:42/05:51/05:58Z: arm 3 (A-s0 masked) COMPLETE 05:49Z (npz+JSON+HTML), arm 4 (B masked, the last) @1,632/4,301 at 05:58Z, ~250 f/min → all four state-probe reads open ~06:1xZ. Discord traffic: none inbound. Queue: local → state-probe reads (~06:1xZ, instrument armed) → fairness probe → noise-key flip re-bank (band now final) → SnapFlow distill (launch path fully unblocked, needs quiet GPU); box → idle awaiting owner steer (E4B follow-on + panel-v2 3 decisions + stage-2b); ≥2 ✓. GPU busy (probe arm 4) + CPU queue non-empty (probe reads ~15 min out) → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 05:30–05:4xZ (real date -u) — work session: E4B NO-LAUNCH — THE PRE-REGISTERED TERMINAL BRANCH FIRED: all four memory- ladder rungs OOM’d on 80 GB; the screen does not launch under the matched recipe (finding post, Amendment 2 finalized in the pre-reg). The chained session’s smoke had already run rungs 2–4 (2×6 / 3×4 / 4×3 chunked backward, correct banners, box code 9ddcfe3): peaks 81,035–81,059 of 81,559 MiB, every rung dead in the FIRST train_step — zero optimizer steps ⇒ Adam fp32 m/v (~31.8 GiB for 3,975.3M live params) never allocated, so the true need is ~≥110 GiB/rank, not a near-miss (consistency: E2B ran 71–75 GiB at ~2.2× fewer live params). Read: feasibility negative, NOT a scale answer — probe/panel gates never ran, attribution question stays open; E4B’s zero-port-cost premise is dead, so Molmo2-4B (survey rank 2) competes near-even with any ZeRO-1 re-entry (which would be a NEW pre-reg). Follow-on decision posted to the owner with 4 options + recommendation (drop E4B → box to #11 grounding arms after the probe read; ZeRO-1 re-entry queued as a candidate). Blog built + Space pushed (post URL 200; link-fix follow-up posted after a wrong hostname in the first Discord message). check.py 222 green. Probe babysits 05:30/05:38Z: arm 3 (A-s0 masked) @1,152→2,432/4,301, 83% util, ~160 f/min — arm 3 lands ~05:5xZ, arm 4 keeps reads on pace ~06:1x–06:4xZ. Discord: no new messages. Queue: local → state-probe reads (~06:1x–06:4xZ) → σ_draw amendment (CPU-ready: draws runs 3–5 all in) + fairness probe → SnapFlow distill; box → idle awaiting owner steer (E4B follow-on NEW + panel-v2 3 decisions + stage-2b); ≥2 ✓. GPU busy (probe arms 3–4) + CPU queue non-empty (σ_draw amendment, probe reads) → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 05:29–05:3xZ (real date -u) — tick: state probe past halfway — arms 1+2 COMPLETE with full npz+JSON+HTML (the a433db9 merge fix held), arm 3 (A-s0 masked) scoring. AR-100k masked and flow-80k masked landed 05:04Z / 05:19Z; arm 3 @832/4,301 at 05:28:51Z, log fresh, ~100–160 f/min through load — arms 3+4 keep the reads on pace ~06:1x–06:4xZ. No surface reads taken (frozen paired reads run via the instrument once all four arms land). Discord: no new messages, no new reactions (history-checked; last message is our own 04:43Z crash+fix post); panel-v2 (3 decisions) + stage-2b still await owner steer. E4B finalization amendment draft still staged in-tree — the chained work session’s items: B12 memory smoke on the idle box → amendment finalize → E4B launch. Queue unchanged: box → B12 smoke → E4B amendment → E4B launch; local → state-probe reads (~06:1x–06:4xZ) → σ_draw amendment + fairness probe → SnapFlow distill; +panel-v2 + stage-2b awaiting steer — ≥2 ✓. GPU busy (probe arm 3) + CPU queue non-empty (E4B items) → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 04:56–04:5xZ (real date -u) — tick: relaunched state probe healthy and warmer than run 1 — arm 1 (AR-100k masked) @2,432/4,301 at 04:56:44Z, ~262 frames/min sustained since the 04:51 poll (95% util confirmed then), log fresh; arm 1 lands ~05:04Z, all four reads on pace ~06:1x–06:4xZ. Discord: no new messages, no new reactions (history-checked; last message is our own 04:43Z crash+fix post); panel-v2 (3 decisions) + stage-2b still await owner steer. E4B finalization amendment draft remains staged in-tree (PENDING_PEAK/PENDING_RUNG await the B12 smoke) — the chained work session’s items: B12 memory smoke on the idle box → amendment finalize → E4B launch. Queue unchanged: box → B12 smoke → E4B amendment → E4B launch; local → state-probe reads (~06:4xZ) → σ_draw amendment + fairness probe → SnapFlow distill; +panel-v2 + stage-2b awaiting steer — ≥2 ✓. GPU busy (probe) + CPU queue non-empty (E4B items) → run_work_next armed per no-idle-pauses.

*Previous update 2026-08-06 04:39–04:5xZ (real date -u) — tick: STATE PROBE CRASHED AT THE MERGE — DIAGNOSED, FIXED, RELAUNCHED (reads slip ~06Z → ~06:4x–07:0xZ). Arm 1 (AR-100k masked) scored ALL 4,301 frames then died in merge_shards: permuted() applied the dump_index row order to dump_draws, which is [] when --dump-predictions runs without --dump-draws — IndexError before any npz/JSON/report was written, and the launcher’s set -euo pipefail took the whole 4-arm chain + tmux session down with it. Mechanism owned: the line landed in f0868b3 (fairness instrument added dump_draws to the shard merge); every local eval since had passed --dump-draws (draws runs 3–5), so the probe’s AR arm was the FIRST dump-predictions-without-dump-draws eval through the new path — the test fixture always filled dump_draws, which is why 221 stayed green. Fix a433db9: empty-means- off guard at the call site + regression test (check.py 222 green). Probe relaunched 04:44Z (same launcher, sha256 re-asserted, tmux stateprobe); first-poll util rule CONFIRMED post-load: arm 1 @1,152/4,301 at 04:51:51Z, 95% util, ~280 frames/min (warmer than the first run’s ~160) — reads land ~06:1x–06:4xZ. Also found in-tree: the E4B finalization amendment DRAFT (Amendment 2) already staged in the pre-reg post — σ_seed 0.038 section complete, PENDING_PEAK/ PENDING_RUNG placeholders await the B12 memory smoke on the idle box → that smoke + amendment + E4B launch are the chained work session’s items. Discord: no new traffic (history: our 04:24Z results post, no new reactions); crash+fix+slip noted in-channel; panel-v2 (3 decisions) + stage-2b still await owner steer. Queue: box → B12 smoke → E4B amendment finalize → E4B launch; local → state-probe reads (~07Z) → σ_draw amendment + fairness probe → SnapFlow distill; +panel-v2 + stage-2b awaiting steer — ≥2 ✓. GPU busy (probe re-run)

• CPU queue non-empty (E4B items) → run_work_next armed per no-idle-pauses.*

Previous update 2026-08-06 04:28–04:3xZ (real date -u) — tick: state-reliance probe healthy on its first tick-poll — arm 1 (AR-100k masked) @2,112/4,301 frames, log fresh 04:29Z, util 75% (first-poll rule re-confirmed; ~160 frames/min, on pace), all four reads still land ~06:0xZ; policy name carries _state-masked as registered. Box: all 4 GPUs idle by design (post-batch); E4B finalization amendment (σ_seed 0.038 in hand, CPU-side) + B12 memory smoke remain the next box items → E4B launch. Discord: no new traffic (the one unread message was our own 04:24Z results headline; history-checked, no new reactions); panel-v2 (3 decisions) + stage-2b still await owner steer. Queue unchanged: box → E4B amendment + smoke → E4B launch; local → state-probe reads (~06Z) → σ_draw amendment + fairness probe → SnapFlow distill; +panel-v2 + stage-2b awaiting steer — ≥2 ✓. GPU busy (probe) + CPU queue non-empty (E4B amendment) → run_work_next armed per no-idle-pauses.

*Previous update 2026-08-06 03:51–04:3xZ (real date -u) — work session: BOX-BATCH RESULTS ARE IN AND THE DECISION RULE FIRED: THE AUX-OFF EFFECT IS REAL — aux supervision helps action prediction, the mainline “within noise” expectation is falsified (results post, reports/analysis__box_batch_40k_k4l2.json). s1/s2 landed 04:0x–04:1xZ (watched through the boundary), all four npz+JSON pairs pulled, the pre-built instrument ran the frozen reads: arms A-s0/s1/s2 7.7966/7.8052/7.7355, B (aux-off) 8.2989; primary paired per-frame B−A-s0 +0.462, CI95 [0.387, 0.537] — 7.5× the largest replicate delta (0.0697, within the ≤0.2 soft expectation), leave-one-repo-out coherent (worst exclusion +0.435). σ_seed(chunk) = 0.038 → E4B adopt band = max(3σ, 0.15) = 0.15 (floor binds). The twist survived pooling: B’s first_mae 3.5009 BEATS aux-on (3.94–4.11), cond-sensitivity 1.13 vs 1.86–2.00, predictions 8% closer to state-copy — the state-shortcut story is coherent but stays descriptive until the probe’s frozen reads. Ledger’s first training rows added; ideas #6 → confirmed (aux stays ON in all future recipes). Also this session: stranded parity-extension work found in the tree (prior session hit its cap before committing) — check.py 221 green, committed 70bda9a. Local: draws run 5 (draws=1 heun-10) COMPLETED 04:12Z: 6.8468/2.3525 (vs heun-30 draws-1 6.6232/1.9331: heun-10 costs +0.22/+0.42 at single draw) — the draws chain (runs 1–5) is COMPLETE; σ_draw amendment + fairness probe are the next local items. Then, per the mantra (both boxes went idle): STATE-RELIANCE PROBE LAUNCHED 04:2xZ on the freed local GPU (tmux stateprobe, ~/launch_state_probe_q4.sh, plan sha256 asserted at launch, 4 sequential masked runs ≈1.7 GPU-h; first-poll rule: arm 1 (AR-100k) scoring at ~120–170 frames/min, util 70%, policy name carries _state-masked as registered) — all four reads land ~06:0xZ. Box: all 4 GPUs idle; E4B finalization amendment (σ_seed now in hand, CPU-side)

• B12 memory smoke are the next box items → E4B launch. Discord: no new traffic; results headline posted; panel-v2 (3 decisions) + stage-2b still await owner steer. Queue: box → E4B amendment + smoke → E4B launch; local → state-probe reads (~06Z) → σ_draw amendment + fairness probe → SnapFlow distill; +panel-v2 + stage-2b awaiting steer — ≥2 ✓. GPU busy (probe) + CPU queue non-empty (E4B amendment) → run_work_next armed per no-idle-pauses.*

Previous update 2026-08-06 03:48–03:5xZ (real date -u) — tick: A-s0’S PANEL READ IS IN — chunk_mae 7.7966 / first_mae 3.9422 @40k (report+npz+ HTML landed on the box 03:40Z, pulled local this tick by direct rsync; state-copy reproduces 11.7848/2.6202). The results instrument’s primary read (B−A-s0) and the state-reliance probe are BOTH unblocked on inputs — first surface read: B (aux-off) 8.2989 is +0.50 WORSE on chunk_mae (the pre-registered primary’s direction), but B’s first_mae 3.5009 is BETTER than A-s0’s 3.9422, and BOTH arms sit above state-copy 2.6202 on first_mae — the “B’s flag = aux-off state-shortcut” story just got complicated before the probe even runs; numbers stay surface-only until box_batch_results.py does the paired reads on all four npzs. s1 @22.9k, s2 @23.9k of 25.8k (logs fresh 03:49Z, ~160–190 frames/min) → both land ~04:0x–04:1xZ; GPU0/GPU1 now idle (A-s0 done + E4B slot). Local: draws run 4 (draws=10 heun-10) COMPLETED 03:38Z: 5.4045/1.5319 vs run 2’s heun-30 5.365/1.424 — the solver-step cost at draws=10 is small (+0.04 chunk); run 5 (draws=1 heun-10) chained and scoring @100% util. Discord: no new messages, no new reactions (history-checked); panel-v2 (3 decisions) + stage-2b still await owner steer. Queue: box → results window OPEN once s1/s2 land ~04:1xZ (instrument armed; then σ_seed → E4B amendment + smoke on the freed GPUs) + state-reliance probe (4 masked runs, first quiet window after the evals clear); local → run 5 → fairness probe → SnapFlow distill; +panel-v2 + stage-2b awaiting steer — ≥2 ✓. GPUs busy + the results read is ~15–25 min out → run_work_next armed; the chained work session takes the full results window.

Previous update 2026-08-06 03:04–03:0xZ (real date -u) — tick: all chains healthy; box lead arm A-s0 is ~40 min from its read — the ~04Z results window opens next session. Box: three control evals scoring — A-s0 @19.1k, s1 @14.1k, s2 @15.2k of 25.8k, all advancing since the 02:58 poll (~130–210 frames/min), logs fresh 03:03–03:04Z; A-s0 lands ~03:4x–03:5xZ (its npz unblocks BOTH the results instrument’s primary read and the state-reliance probe), s1/s2 ~04:1x–04:2xZ; B complete (pulled 02:09Z); GPU1 idle as decided. Local draws run 4 @17.2k/25.8k, 99% util, log fresh 03:04Z, on pacing ~04:1xZ. Discord: no new messages; history-checked — no new reactions beyond the recorded ❤️; panel-v2 (3 decisions) + stage-2b still await owner steer. Queue unchanged: box → results post (~04Z, instrument armed) + E4B smoke/σ_seed/amendment → E4B launch; local → fairness probe → SnapFlow distill; + state-reliance probe (unblocks on A-s0’s npz ~03:5xZ, slots any quiet GPU window); +panel-v2 + stage-2b awaiting steer — ≥2 ✓. GPUs busy + CPU queue non-empty → run_work_next armed per no-idle-pauses; the chained session takes the A-s0 boundary.

*Previous update 2026-08-06 02:49–03:1xZ (real date -u) — work session: STATE-RELIANCE PROBE PRE-REGISTERED (#11 rung (a)) — the lit slice’s state-dominant- bias mechanism now has its falsification instrument landed and its reads frozen, one session after the mechanism was named (pre-reg). Instrument: bijou.eval --mask-state substitutes each item’s per-dataset state MEAN, so the normalized soft state token collates to EXACTLY zero (x−x ≡ 0 bitwise) — zero state information at in-distribution magnitude; applied in apply_overrides so the narrated pass sees identical inputs; policy name gains _state-masked (the _drawsN can’t-pass-as-deployment precedent); report JSON + npz scalars + banner all record it; parse guards (no-checkpoint, –smolvla mix) die at the parser; baselines deliberately intact — state-copy stays the reference AND becomes the execution oracle (masked run’s baseline rows must byte-match the banked npz pooled on the subset rows: proves pairing + mask isolation). 6 new tests (tests/test_mask_state.py exactly-zero / at-mean identity / no-mutation + 3 parse guards), check.py 221 green. Design: frozen 4,301-row subset plan (plans/holdout_curated_v0_k4l2_stateprobe_q4.json, every 4th core row, sha256-pinned, builder+oracle in fontaine/scripts/state_probe_subset_plan.py) — a strict row-subset, so the intact side POOLS from banked npzs (AR-100k, flow-80k, B in hand; A-s0 ~04Z): 4 masked runs ≈ 1.7 GPU-h total, zero intact re-evals. Primary read frozen: D = Δ_first(B) − Δ_first(A-s0), paired seeded bootstrap; supported iff CI excludes 0 AND D ≥ 0.05 — supported ⇒ #9 state-DROPOUT gets its own pre-reg; not ⇒ the mechanism is dropped as B’s-flag explanation. OOD limitation stated honestly (masking is untrained; the paired B−A-s0 difference subtracts the common OOD effect). Blocked on A-s0’s ~04Z npz; first quiet GPU window, never beside a pre-registered eval. Babysits 02:49/02:58Z: box three control evals scoring — A-s0 @17.8k, s1 @13.2k, s2 @14.0k of 25.8k (~160–210 frames/min), reads on pace ~03:4x–04:1xZ; B complete (pulled); GPU1 idle as decided. Local draws run 4 @15.4k/25.8k, 99% util, on pacing ~04:1xZ. Discord: no new messages; pre-reg posted 03:0xZ; panel-v2 (3 decisions) + stage-2b still await owner steer. Queue: box → results post (~04Z, instrument armed) + E4B smoke/σ_seed/amendment → E4B launch; local → fairness probe → SnapFlow distill; + state-reliance probe (NEW, blocked on ~04Z npz, slots any quiet GPU window); +panel-v2 + stage-2b awaiting steer — ≥2 ✓. Blog built + Space pushed. GPUs busy

• CPU queue non-empty → run_work_next armed per no-idle-pauses.*

Previous update 2026-08-06 02:48–02:5xZ (real date -u) — tick: all chains healthy; box endgame past 60% on the lead arm. Box: three control evals scoring — A-s0 @15.9k, s1 @11.7k, s2 @12.4k of 25.8k, all advancing since the 02:39 poll (~130–160 frames/min), logs fresh 02:47–02:48Z, reads on pace ~03:4x–04:1xZ; B complete (pulled 02:09Z); GPU1 idle as decided (E4B smoke at the boundary). Local draws run 4 @12.8k/25.8k, 91% util, log fresh 02:48Z, on pacing ~04:1xZ. Discord: no new messages; history-checked — no new reactions beyond the recorded 👍/❤️; panel-v2 (3 decisions) + stage-2b still await owner steer. Queue unchanged: box → results post (~04Z, instrument armed) + E4B smoke/σ_seed/amendment → E4B launch; local → fairness probe → SnapFlow distill; +panel-v2 + stage-2b awaiting steer — ≥2 ✓. GPUs busy + CPU queue non-empty → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 02:39–02:5xZ (real date -u) — work session: THE OVERDUE LIT SLICE TAKEN (the flagged MUST — 7 sessions deferred) — and it named a candidate mechanism for the batch’s biggest open flag: state-dominant bias. Targeted pass on distillation, data curation, and grounding. Bankings (ideas #11 + #9): (1) ReViP diagnoses VLA “false completion” as modality imbalance — policies over-rely on proprioceptive state progression and under-use vision (+26% over π0 via progress-aware FiLM rebalance; abstract-depth). The causal- confusion line (2506.23944 p=0.8 state masking; 2509.18644 state-FREE policy) agrees: proprioception is the shortcut, vision generalizes. Direct hit on our grounding gap AND on B’s pending first_mae 3.5009 > copy 2.6202 flag — aux-off leaning harder on the state shortcut is now a named, testable hypothesis. (2) Cheapest falsification queued in #11: a state-reliance probe (panel-subset eval with state zeroed vs intact on AR-100k/flow-80k/ B/A-s0; Δ(B) vs Δ(A-s0) is the read; needs --mask-state + its own pre-reg). (3) #9’s “state-noise” sharpened to state DROPOUT (the literature’s lever) as the paired train-time arm. Skim-depth: 2602.09722 (heterogeneous pooling → negative transfer; supports selective mixture) and the data-engine survey (dedup/contamination = THE bottleneck — the #18.7 census is exactly this). No new launch implied; the probe idea feeds the ~04Z results read’s discussion, not its frozen numbers. check.py 215 green. Babysits 02:39/02:42Z: box controls A-s0 @14.6k, s1 @10.9k, s2 @11.4k of 25.8k — advancing, reads ~03:4x–04:1xZ; B complete (pulled); GPU1 idle as decided. Local draws run 4 @11.4k/25.8k, log fresh, on pacing ~04:0x–04:1xZ. Discord: no new messages. Queue unchanged: box → results post (~04Z, instrument armed) + E4B smoke/σ_seed/amendment → E4B launch; local → fairness probe → SnapFlow distill; +panel-v2 + stage-2b awaiting steer — ≥2 ✓. GPUs busy + CPU queue non-empty → run_work_next armed per no-idle-pauses.

*Previous update 2026-08-06 02:37–02:4xZ (real date -u) — tick: all chains healthy; box endgame past the halfway mark. Box: three control evals scoring — A-s0 @13.6k, s1 @10.1k, s2 @10.8k of 25.8k, all advancing since the 02:3x poll, reads on pace ~03:4x–04:1xZ; B complete (pulled 02:09Z); GPU1 idle as decided (smoke at the boundary). Local draws run 4 @10.1k/25.8k, log fresh 02:37Z, on pacing ~04:0x–04:1xZ. Discord: no new messages; history-checked — no new reactions beyond the recorded 👍/❤️; panel-v2 (3 decisions)

• stage-2b still await owner steer. Queue unchanged: box → results post (~04Z, instrument armed) + E4B smoke/σ_seed/amendment → E4B launch; local → fairness probe → SnapFlow distill; +panel-v2 + stage-2b awaiting steer — ≥2 ✓. Lit slice remains a MUST for the next work session (7 sessions since 00:14Z). GPUs busy + CPU queue non-empty → run_work_next armed per no-idle-pauses.*

Previous update 2026-08-06 02:24–02:4xZ (real date -u) — work session: Q3 TRIPWIRE NOISE FIX LANDED (#18.3, deep-dive finding 3) — the conditioning-collapse alarm now measures conditioning, not sampling variance, closed before the SnapFlow distill launch (the next conditioned flow run, --condition-fields subgoal outcome smoothness). The tripwire’s override decode re-used the advanced generator — fresh noise — so for a flow decoder mean|Δ| vs the scalar pass had a floor at the sampling variance even for a fully conditioning-blind model, the exact state the alarm was registered to catch. Fix: FlowDecoder.predict_chunk now returns the noise it integrated (BijouPrediction.noise; fallback draw moved from sample_actions into predict_chunk — the identical randn), validate() captures it per rich row, and the Q3 override decode reuses each flipped row’s scalar-pass noise, so |Δ| isolates the conditioning effect; AR path byte-unchanged (noise None, greedy — was already exact). Oracles: pre-edit banked reference on a seeded fixture reproduced bit-exact post-edit (actions AND generator end-state — in-run probe curves stay comparable across the change); noise round-trip bitwise; eval/panel paths structurally untouched (eval always passes explicit per-item noise — verified at both policies.py call sites). 3 new tests (tests/test_condition_tripwire.py), check.py 215 green. Semantics note recorded in ideas #18.3: flow-run condition_sensitivity not comparable to mainline’s historical values (which carried the floor). Babysit 02:3xZ: box ×3 control evals scoring A-s0 @13.2k, s1 @9.5k, s2 @10.1k of 25.8k — frames advancing, on pace ~03:4x–04:1xZ; B complete (pulled 02:09Z); GPU1 idle as decided (smoke at the boundary). Local draws run 4 @9.5k/ 25.8k, 99% util, on pacing ~04:0xZ. Discord: no new messages; panel-v2 + stage-2b still await owner steer. Queue unchanged: box → results post (~04Z, instrument armed) + E4B smoke/σ_seed/amendment → E4B launch; local → fairness probe → SnapFlow distill (its conditioned-run path now unblocked by this fix); +panel-v2 + stage-2b awaiting steer — ≥2 ✓. Lit slice skipped again (6 sessions since 00:14Z — #18.3 was the ladder’s top unblocked item with a launch-path deadline; the pure-babysit window before ~04Z or the first post-results session takes the slice, stated as a MUST). GPUs busy + CPU queue non-empty → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 02:22–02:2xZ (real date -u) — tick: all chains healthy; box endgame is three control evals from done, and B’s eval GPU is now idle — E4B smoke deliberately deferred to the boundary. Box: B’s panel eval COMPLETE (25,792/25,800 final scoring line; report+ npz+HTML confirmed pulled local 02:09Z by boxsync — the ~04Z results run has its first input in hand), GPU1 idle as expected. Controls scoring on GPUs 0/2/3: A-s0 @11.4k, s1 @7.1k, s2 @7.6k of 25.8k — on pace, reads ~03:4x–04:1xZ. Judgment call recorded: GPU1 free unblocks the E4B B12 memory smoke (~/smoke_e4b_b12.sh), but it is NOT run this tick — a training smoke co-located beside three live pre-registered evals risks the same CPU contention that slowed the box 0.39→0.51 s/step during the parity job, and the smoke is off the critical path (E4B launch waits on the σ_seed finalization amendment, which needs the same ~04Z control reads). Smoke runs at the eval boundary alongside the results work. Local draws run 4 (draws=10 heun-10) @6.0k/25.8k, ~190 frames/min, done ~04:0xZ, on pacing. Boxsync loop alive (marker discipline working). Discord: no new messages; history-checked — no new reactions; the panel-v2 amendment (3 decision points) still awaits owner steer. Queue unchanged: box → results post (~04Z, instrument armed) + E4B smoke/σ_seed/amendment → E4B launch; local → fairness probe → SnapFlow distill; +panel-v2 + stage-2b awaiting steer — ≥2 ✓. GPUs busy + CPU queue non-empty → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 02:11–02:4xZ (real date -u) — work session: PANEL-V2 AMENDMENT PROPOSED (#18.7 follow-on) — the panel re-definition is frozen, its anchors derived, and the decision is on the owner’s desk before the ~04Z anchor boundary (amendment, instrument fontaine/scripts/panel_v2.py, frozen plan plans/holdout_curated_v0_k4l2_panel_v2.json, report ~/panel_v2_anchors.json). v2 = v1 minus the census’s 524 leaked episodes minus the 3 wrap-census corrupt repos (which the panel still scored: 52 core rows averaging ~31° wrap-scale MAE) — a strict row-subset (core 17,204→15,056, labeled 8,596→7,522, zero overlap between the two exclusion sets), so every banked npz re-pools to v2 exactly, zero re-evals; adoption is CPU-only. v2 anchors, oracle-gated (v1 anchors + census clean-core both reproduce exactly, state-copy pools identically from both npzs): AR-100k 5.8894/2.1396, flow-80k 6.7151/1.9453, state-copy 11.7639/2.5851 — the two exclusions partially offset (leak removal +0.17–0.19, corrupt removal −0.09). Transition rules proposed: in-flight pre-registered reads (box results ~04Z, draws chain, E4B, SnapFlow) finish on v1 as registered with the v2 column quoted alongside; v2 becomes the convention for NEW pre-regs on approval; the #18.2 noise-key flip (and optionally #14 shortest-arc) bundles at the same re-bank boundary so the flow anchor re-banks once, not three times. Three owner decision points posted to Discord. check.py 212 green; synthetic materialization oracle + all real-data asserts pass. Babysits 02:15/02:4xZ: box ×3 control evals scoring (A-s0 @9.3k, s1 @5.1k, s2 @5.5k of 25.8k — reads on pace ~03:4x–04:1xZ), B’s report+npz landed; local draws run 4 @3.2k/25.8k, 100% util, on pacing. Discord: no new messages. Queue unchanged: box → results post (~04Z, instrument armed) → E4B; local → fairness probe → SnapFlow distill; +panel-v2 amendment + stage-2b awaiting owner steer — ≥2 ✓. GPUs busy + CPU queue non-empty → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 02:07–02:2xZ (real date -u) — tick: B’S PANEL READ IS IN — the first of the four box-batch numbers: aux-off (B) chunk_mae 8.2989 / first_mae 3.5009 @40k (state-copy 11.7848/2.6202; report+npz landed 02:09Z, ahead of the ~02:15Z projection — babysat through the boundary via a report-JSON watcher, scoring confirmed complete 25,800/25,800 with the writer in CPU-side post-processing before the files appeared). Flag for the results read, stated now before the controls land: B’s first_mae 3.5009 is WORSE than the state-copy baseline 2.6202 — consistent with an aux-off grounding cost, but no conclusion until the paired per-frame reads; the pre-registered primary stays chunk_mae B−A-s0 via box_batch_results.py when all four npz+JSON pairs are in. Controls on pace: A-s0 @8.5k, s1 @4.4k, s2 @4.7k of 25.8k — reads ~03:4x–04:1xZ. Boxsync loop alive (20-min passes; s1/s2 step_040000 marked synced_complete, B’s report pulls on the next pass). Local draws run 4 (draws=10 heun-10) @2.1k/25.8k, 99% util, on pacing. Discord: no new messages; history check surfaced a ❤️ on the draws-10 HTML report attachment post — recorded as lightweight positive ack (owner liked seeing the report). Queue unchanged: box → results post (~04Z, instrument armed) → E4B; local → fairness probe → SnapFlow distill; +panel-v2 amendment awaiting owner steer — ≥2 ✓. GPUs busy + CPU queue non-empty → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 01:39–02:1xZ (real date -u) — work session: DUPLICATE-CONTENT CENSUS EXECUTED (#18.7) — THE PANEL’S HOLDOUT IS BREACHED BY THE FORK CHANNEL: 12.2% of core panel frames (2,096/17,204) score on episodes with BYTE-EXACT twins in train (results post, fontaine/scripts/dup_content_census.py + dup_census_anchor_impact.py, reports ~/dup_census_report.json + ~/dup_census_anchor_impact.json). The deep-dive finding-7 census, run deliberately BEFORE the box results land (~03–04Z read fine holdout deltas at a 0.15 band): the corpus is heavily forked — 6,935/52,507 episodes (2.67M frames) in 3,348 cross-repo byte-exact action+state clusters (quantized tier adds NOTHING — pure re-uploads); 524 holdout episodes across 79 repos have train-side twins (same-user variants: samanthalhy herding, shylee pengrip, dopaul chess; cross-user forks: Chojins↔bensprenger, Dangvi↔s20000s, lirislab↔roboticshack). Anchor impact through a join content-verified against raw parquet (partition reproduces both anchors exactly): leaked frames score ~1.3–1.6 BETTER than clean on both banked models — clean-core anchors AR-100k 5.9761/2.1695, flow-80k 6.8137/1.9714 (published numbers ~0.17–0.19 optimistic in level; content-difficulty confound stated). Paired within-corpus deltas — box batch, E4B, draws chain — are unaffected (every arm shares the train corpus and the same leaked frames); absolute generalization claims + the comm→rig bridge now quote clean-core. Panel-v2 (excluding the 524) = a panel re-definition → queued for its own amendment + owner steer; exclusion list frozen. Validation: 7-case synthetic oracle; split mirror PROVEN on all 878 plan repos (plan episodes == re-derived holdout_episodes); 20-pair collision guard; zero structural warnings corpus-wide. check.py 212 green. Babysits 01:39/01:51/ 02:04Z: box ×4 eval chains all scoring — B @24.5k/25.8k, its panel read lands ~02:15Z, A-s0 @7.7k, s1 @3.6k, s2 @3.9k (reads ~03:4x–04:1xZ); local draws run 3 (draws=5) COMPLETED 01:53Z: 5.5235/1.4985 (monotone in N: 6.6232@1 → 5.5235@5 → 5.365@10), run 4 (draws=10 heun-10, the solver-step arm) chained and scoring @99% util. Discord: no new messages ×3 polls. Queue depth: box → results post (~04Z, instrument armed) → E4B; local → fairness probe → SnapFlow distill; +panel-v2 amendment — ≥2 ✓. GPUs busy + CPU queue non-empty → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 01:19–01:4xZ (real date -u) — work session: BOX-BATCH RESULTS INSTRUMENT LANDED + ORACLED BEFORE THE DATA — when the four panel npz+JSON pairs land (~03–04Z), one command produces the results-post numbers, the frozen decision verdict, AND both finalization amendments (fontaine/scripts/box_batch_results.py, #6). Implements exactly the frozen reads of the box-batch pre-reg: primary paired per-frame chunk_mae B−A-s0 with seeded bootstrap CI; pairwise replicate deltas {s0,s1,s2}; E5 0.2/0.3 noise-floor bands; the pre-registered decision rule (effect > LARGEST pairwise replicate delta AND leave-one-repo-out coherent — sign + threshold must survive every single-repo exclusion); σ_seed (ddof=1 over replicate pooled chunk_maes) → E4B adopt band max(3σ_seed, 0.15) and rig-benchmark slot 2. Headline column = bare pred:bijou@STEP by anchor convention (the real eval JSONs keep per-policy summaries, so “match the report” can’t select — found by inspecting a live arm’s --output-json contract mid-build); each arm’s report JSON is a drift oracle instead: recomputed chunk+first must reproduce its summaries entry (<5e-3) or abort. Four oracles all green: anchors 5.8026/2.1431 + 6.6232/1.9331 exact through this file’s pooling; degenerate same-npz → all-zero deltas, CI [0,0], band floor, within-noise verdict; synthetic 1.05× error inflation → +0.27679 delta, real+coherent+correct sign (a flat +c prediction shift is documented as an INVALID synthetic — balanced error signs cancel the MAE shift; the first oracle draft made exactly that error and the assert caught it); report cross-check on the real AR-100k npz+JSON pair. check.py 212 green ×2. BOX ENDGAME BABYSAT THROUGH THE BOUNDARIES: A-s0 COMPLETED 40k (formal final probe 7.0882@40k, gate <9 passed with margin; step_040000 saved; chained panel eval confirmed scoring on GPU0 — 832/25.8k frames at 01:28Z); B’s eval @11.7k/25.8k on pacing (read ~03:1xZ); s1/s2 COMPLETED 40k at the babysat ~01:35Z boundary — formal final probes 6.9444 / 7.0231 @40k (gate <9, passed with margin), both step_040000 saved, and ALL FOUR panel eval chains confirmed live at 01:36Z (4 eval procs; s1/s2 in load phase). The full batch — every arm trained, every gate passed, every eval chained — closes its training phase with zero interventions. Draws run 3 @21k/25.8k (~01:50Z, then runs 4–5). Discord: no new messages; 👍 on the SnapFlow-complete post (recorded). Queue depth: box → E4B (GPU-side only, needs σ_seed from THIS instrument’s output); local → fairness probe → SnapFlow distill (launch-ready) — ≥2 ✓. GPUs busy + CPU queue non-empty (results post ~03–04Z runs the instrument, E4B GPU-side checklist) → run_work_next armed per no-idle-pauses.

*Previous update 2026-08-06 00:57–01:1xZ (real date -u) — work session: RESUME HARDENING LANDED (#18.4, deep-dive finding 2 — all three traps closed before the E4B 100k launch opens its crash+resume risk window; idea #3 longer-training unblocked). (a) The fresh-seed-on-resume convention is now ENFORCED, not assumed: --resume with the checkpoint’s recorded train_args.seed dies loud at startup — before data/model build, all ranks — because the epoch-0 restart replays exactly the batches and τ/ε draws already trained on; --allow-same-seed-resume is the explicit reproduction-only escape hatch (parse-guarded to --resume), and checkpoints predating train_args recording warn instead of dying. (b) Live-backbone resume now prints an honest WARNING: fp32 masters restart snapped to the bf16 grid (sub-bf16 updates discarded at every boundary — masters are never serialized); the stale “lossless continuation” comment in save_checkpoint corrected to frozen-backbone-only. (c) The resume hyperparameter note covers EVERY optimizer param group (was group 0 only — a changed --backbone-*-lr on resume was silently ignored): CLI intent captured per group at construction, compared against restored initial_lr so a schedule-decayed lr can’t fake a mismatch. 11 new tests (tests/test_resume_guards.py), check.py green (212); live oracle on the real flow-80k step_080000: same-seed refused / fresh-seed proceeds in order. Coupling handled: snapflow_recipe_verify POST_TEACHER_DEFAULTS extended (new TrainArgs field at inert default), stage 0 re-run green (51 fields verbatim, 11 deltas). Babysits 01:07/01:10Z: box ×4 healthy — all three control probes now sub-7 (A-s0 6.955@39k, s1 6.926@37k, s2 6.973@37.5k), A-s0 @39.5k hits 40k ~01:14Z, s1/s2 @37.5–37.6k ~01:26Z, 0.39–0.40 s/step, grad norms nominal; B’s chained panel eval LIVE @3.9k/25.8k frames (~175 frames/min ⇒ read lands ~03:1xZ, controls’ evals queue behind their 40k boundaries). Draws run 3 @16.8k/25.8k on pacing (~01:50Z, then runs 4–5). OWNER EXCHANGE 01:11Z (replied ~01:15Z): owner asked whether the draws runs generated an HTML eval report and wanted to see the mean-of-10 charts — answered yes (bijou.eval --report writes self-contained HTML per run) and sent the draws-10 report itself as a Discord attachment, landing discord.py post --attach (≤10 MB multipart upload) within the exchange to do it; caveat stated honestly: the report’s charts show the post-average (mean-of-10) prediction — per-draw spaghetti needs the --dump-draws npz from the fairness probe (~06–09Z), overlay figures promised for the results post. Stage-2b still awaiting owner steer. Queue depth: box → E4B (GPU-side only); local → fairness probe → SnapFlow distill (launch-ready) — ≥2 ✓. GPUs busy

• CPU queue non-empty (box results post when the four panel reads land, E4B GPU-side checklist) → run_work_next armed per no-idle-pauses.*

Previous update 2026-08-06 00:55–00:57Z (real date -u) — tick: B COMPLETED 40k AND ITS PANEL EVAL CHAIN FIRED — watched through the boundary. B (aux-off) finished at ~00:54Z: final loss 3.307, formal final probe 7.702@40k (gate <9, passed with margin), step_040000 saved and the chained panel eval confirmed live on it (correct k4l2 plan + --dump-predictions, eval log eval_fontaine_arb_rcond_auxoff_40k_1xh100_40k.log) — babysat in-session via a background watcher on save-dir + eval-pgrep rather than exiting blind at the boundary. Controls healthy and in their endgame: A-s0 @38.0k (probe 7.21@37.5k), s1 @36.3k (7.06@36k — batch best), s2 @36.3k (7.08@36k), 0.38–0.41 s/step, grad norms nominal — they hit 40k ~01:10–01:25Z and auto-chain their own panel evals; reads land ~01–02:3xZ. Draws run 3 @14.3k/25.8k, 99% util, on pacing. Discord: no new messages, no new reactions (history-checked); stage-2b still awaiting owner steer. Boxsync loop alive; local disk 1.4 T free. Queue depth: box → E4B (GPU-side only); local → fairness probe → SnapFlow distill (launch-ready) — ≥2 ✓. GPUs busy + CPU queue non-empty (box results post when the four panel reads land ~01–02:3xZ, then E4B GPU-side checklist) → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 00:26–00:5xZ (real date -u) — work session: SNAPFLOW DISTILL IMPLEMENTATION COMPLETE — all five pre-launch checklist items landed in one session; the launch path is now zero-CPU and gate (a) is already PASSED on the real checkpoint (pre-reg, ideas #12). (1) φ_s target-time embedding in FlowDecoder behind target_time_embed (two-layer MLP mirroring the τ path, output zero-init ⇒ inert until trained), serialized through bijou_config.json with absent-key back-compat; --init-from gains a sanctioned “φ_s extension” branch (config guard allows exactly the False→True direction; loader tolerates exactly the four fresh φ_s keys — reverse direction and any other diff stay hard errors). (2) bijou.train --distill snapflow: L = α·L_FM + (1−α)·λ·L_shortcut with α=0.5/λ=0.1 frozen as code constants, stop-gradient two-step-Euler shortcut targets at the pure-noise end (x_mid = ε − ½·sg F(ε,1,1); v_target = ½[sg F(ε,1,1) + sg F(x_mid,½,½)]; grad forward at s=0), one shared prefix encode, both mean- and sum-form (chunked backward stays available); flow-only guards; --distill snapflow implies the embedding. (3) 1-NFE eval switch: bijou.eval --target-time {t,zero} — loud, never inferred from step count, refused on non-φ_s checkpoints, threaded through single-draw AND --sample-draws paths, recorded in report JSON + npz scalars + banner. (4) Oracles: 10 new tests (extension adds exactly the φ_s keys; zero-init identity bit-exact incl. s=0; loss ≡ frozen mix with closed-form zero-field value; sums reconstruct mean; 1-NFE sampling ≡ ε − F(ε,s=0,t=1); config round-trip; guard direction test) — check.py green (201). Gate (a) EXECUTED on the real flow-80k step_080000: 6/6 forwards bit-exact, PASSED (fontaine/scripts/snapflow_identity_oracle.py, CPU). (5) Launcher staged + diff-verified through the real parse_args (fontaine/scripts/launch_local_snapflow_distill_30k_1xh100.sh, copies in ~): stage-0 recipe verify proves launcher == teacher train_args + pre-registered deltas ONLY (50 fields verbatim, 11 deltas: steps 30k, LR 2.5e-5, clip 1.0, B24 1×GPU, init-from, distill flags, bookkeeping); stages chain gate (a) → gate (b) (step-0 extended checkpoint materializer + snapflow_drift_gate.py vs the banked flow npz, needs GPU) → training → endpoint 1-NFE panels (draws 1/5/10). @10k record-only probe staged (probe_snapflow_10k_1nfe.sh) with the charter §3 no-co-location note: runs on a quiet GPU (box push or retro), kill line is catastrophic-only; in-run eval_chunk_mae is the live watch. Launch waits ONLY on: local GPU quiet (draws chain + fairness probe ~06–09Z) + the σ_draw finalization amendment (draws runs 3–5). Babysits 00:36/00:52Z: box ×4 healthy — B @39.7k (~00:54Z hits 40k, auto-chains panel eval; total 3.27, probe 7.679@38k well under gate), A-s0 @37.5k (action 3.28), s1 @35.7k, s2 @35.8k, 0.38–0.40 s/step, grad norms nominal; controls done ~01:0x–01:3xZ. Draws run 3 @13.8k/25.8k on pacing. No Discord traffic; stage-2b still awaiting owner steer. Queue depth: box → E4B (GPU-side only); local → fairness probe → SnapFlow distill (NOW launch-ready) — ≥2 ✓. GPUs busy + CPU queue non-empty (box results post when panel reads land ~01–02:3xZ, E4B GPU-side items) → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 00:25Z (real date -u) — tick: both chains healthy; B ~20 min from 40k. Box ×4: A-s0 @34.9k, B @36.9k, s1 @33.0k, s2 @33.1k — 0.38–0.40 s/step, util 58–100%, ~71–75 GiB, grad norms nominal. Probes all stepping down well under the closed gates: A-s0 7.368@34.5k, s1 7.417@33k, s2 7.069@33k (batch best), B 7.738@36.5k. B total 3.17–3.33@36.9k vs control actions 3.27–3.43 — line noise, read unchanged. B hits 40k ~00:47Z and auto-chains its panel eval (no decision pending at the boundary — tick exits rather than babysitting); controls ~01:0x–01:3xZ. Draws run 3 (draws=5) @9.0k/25.8k, 96% util, on pacing. Discord: no new messages, no new reactions (history-checked); stage-2b still awaiting owner steer. GPUs busy + CPU queue non-empty (box results post when panel reads land ~01–02:3xZ, SnapFlow impl checklist items 1–5, E4B GPU-side items) → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 00:14–00:3xZ (real date -u) — work session: SNAPFLOW 1-NFE SELF-DISTILLATION PRE-REGISTERED (#12) — the local-GPU queue slot after the draws chain + fairness probe is now filled (pre-reg). The session’s one item = the sanctioned lit slice taken as a targeted deep-read (SnapFlow full recipe + the two flagged unread pointers), feeding straight into the pre-reg: SnapFlow (2604.05656) recipe frozen — α=0.5/λ=0.1 loss mix, stop-gradient two-step-Euler shortcut targets (no EMA teacher), zero-init φ_s target-time embedding (only new params; step-0 model ≡ teacher exactly — that’s the hard validation oracle), 30k steps LR 2.5e-5 cosine/500 warmup, trunk frozen, ~12–20 h 1×H100. Subject flow-80k step_080000 (verified local); primary read = full panel at 1-NFE vs 6.6232 with +max(3σ_draw, 0.15) band (σ_draw via finalization amendment from draws runs 3–5); deployment headline read: mean-of-10@1-NFE vs the AR anchor 5.8026 at ~one-Heun-5-draw cost — if it holds, the charter §2 “unconstrained class” caveat on the draws win closes (this is the owner’s 21:48Z pre-stated branch, executed). Feasibility verified pre-post: euler solver + sample_actions(noise=…) + cosine/warmup + --init-from all native; impl checklist (φ_s, --distill snapflow, loud 1-NFE eval switch, oracles) = queued CPU items. Pointer reads closed into ideas: OFP (2603.12480) banked as the reserve recipe; GoldenStart screened out (online-RL setting); Golden Ticket (2603.15757) banked in #1 — single searched noise vector, inference-only, gains grow at fewer steps; our panel gives the offline search criterion the paper lacks (pairs with 1-NFE + mean-of-N; needs its own pre-reg). check.py green (191). Babysits 00:2xZ: box ×4 healthy — A-s0 @34.5k (action 3.34), B @36.5k (total 3.42 — single-line read above controls’ action 3.29–3.34 this poll: the margin keeps oscillating at line noise, read unchanged), s1 @32.6k, s2 @32.8k, 0.39–0.41 s/step, grad norms nominal; B hits 40k ~00:45Z then auto-chains its panel eval, controls ~01:0x–01:3xZ. Draws run 3 @8.5k/25.8k, 96% util. No Discord traffic; stage-2b still awaiting owner steer. Queue depth after this session: box → E4B (pre-registered, GPU-side items only); local GPU → fairness probe (pre-registered) then SnapFlow distill (pre-registered, impl checklist pending) — ≥2 ✓. GPUs busy + CPU queue non-empty (box results post when panel reads land ~01–02:3xZ, SnapFlow impl checklist items 1–5, E4B GPU-side items) → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 00:13Z (real date -u) — tick: both chains healthy; B ~28 min from 40k completion. Box ×4: A-s0 @33.5k, B @35.5k, s1 @31.8k, s2 @32.0k — 0.38–0.41 s/step, grad norms nominal, ~71–75 GiB (GPU0’s 0%-util sample is the known between-batch/eval idle; log advancing). Probes all stepping down well under the closed gates: A-s0 7.212@33k, s1 7.333@31.5k, s2 7.203@31.5k, B 7.844@35k. B total 3.27–3.34@35.5k vs control actions 3.32–3.44 — line noise, unchanged read. B hits 40k ~00:42Z and chains its panel eval automatically (no decision pending at the boundary — tick exits rather than babysitting); controls ~01:0x–01:3xZ. Draws run 3 (draws=5) @6.4k/25.8k, 99% util, on pacing. boxsync_loop v2 alive and marking. Discord: no new messages, no new reactions (history-checked); stage-2b still awaiting owner steer. GPUs busy + CPU queue non-empty (box results post when panel reads land ~01–02:3xZ, E4B GPU-side checklist items, stage-2b pending steer) → run_work_next stays armed per no-idle-pauses.

Previous update 2026-08-06 00:03–00:1xZ (real date -u) — work session: E4B PRE-LAUNCH CHECKLIST ITEM 6 DONE — the rsync-back loop is extended and hardened; every CPU-side item on the E4B launch path is now closed (pre-reg checklist; launch waits only on GPU-dependent items: box free, memory smoke, finalization amendment σ_seed, box push+checkout ≥cb51f74 after the four chained panel evals). ~/boxsync_loop.sh v2, deployed + restarted in fontaine-rsync: (1) fontaine_arb_rcond_e4b_100k_ddp4 added to RUNS (its train/eval logs already matched the log globs); (2) partial-copy guard — a step dir gets .synced_complete only when a follow-up --dry-run transfers nothing, so the local E4/E5 panel evals can refuse a mid-save copy; (3) panel-step repair — E4B steps {25k, 50k, 100k} re-sync until marked complete even after leaving the latest-2 window; (4) local rotation, E4B only — keep latest two + panel steps, prune the rest. The rotation is load-bearing disk math: E4B saves ≈ 35–40 GB × 40 ≈ 1.5 T unpruned, and local free is exactly 1.5 T — the unmodified loop (which keeps everything it ever synced) would have filled the disk mid-run; the four 40k-run local copies are never pruned. Verified before deploy: bash -n + a sandboxed one-pass run (HOME redirected, ssh/rsync mocked via PATH shims, pre-seeded stale step dirs) proved marker + prune + keep behavior; also confirmed the existing loop’s sort | tail -2 is CORRECT (zero-padded step dirs) — checked before “fixing” it. First real pass is live and marking actual checkpoints. Strand-proofing: boxsync_loop.sh, the E4B DDP4 launcher, the B12 smoke script, and all four 40k launchers copied off the temporary box into fontaine/scripts/box/ (they defined pre-registered runs and existed only on hardware that can vanish). check.py green (191). Babysit 00:1xZ: box ×4 healthy — A-s0 @33.2k, B @35.3k, s1 @31.5k, s2 @31.6k, 0.38–0.40 s/step, grad norms nominal; B total 3.26–3.30@35.3k vs control actions 3.29–3.45 — line noise; B done ~00:40Z then chains its panel eval, controls ~01:0x–01:3xZ. Draws run 3 (draws=5) @5.8k/25.8k, util healthy. No Discord traffic; stage-2b still awaiting owner steer. GPUs busy + CPU queue non-empty (box results post at arm completion ~00:40–02Z, E4B GPU-side items, stage-2b pending steer) → run_work_next armed per no-idle-pauses.

Previous update 2026-08-06 00:02Z (real date -u) — tick: both chains healthy; box endgame on schedule. Box ×4: A-s0 @32.4k, B @34.5k, s1 @30.7k, s2 @30.9k — 0.38–0.40 s/step, util 57–85%, grad norms nominal. Probes: controls’ formal 30k gate reads all in and PASSED — s1 7.842@30k, s2 7.206@30k (A-s0’s passed last session; B’s formal 8.178 earlier) — every pre-registered probe gate in the batch is now closed. Latest: A-s0 7.557@32k, B 7.916@34k, s1 7.350@30.5k, s2 7.221@30.5k. B total 3.30@34.5k vs control actions 3.33–3.47 — margin line noise, as read. B hits 40k ~00:40Z then chains its panel eval; controls ~01:0x–01:3xZ. Draws run 3 (draws=5) @4.2k/25.8k, 100% util, on pacing. Discord: no owner traffic (only our stage-2 results post), no new reactions (history-checked); stage-2b still awaiting owner steer. GPUs busy + CPU queue non-empty (box results post at arm completion ~00:40–02Z, E4B GPU-side checklist, stage-2b pending steer) → run_work_next armed per no-idle-pauses.