{"kind":"github.issue","format":"markdown","title":"Effort overview for MLX History Sprint: improve val_bpb on Apple Silicon (proof v2)","body":"# Effort: MLX History Sprint: improve val_bpb on Apple Silicon (proof v2)\n\n## Objective\n- Objective: `val_bpb`\n- Platform: `Apple-Silicon-MLX`\n- Budget seconds: `300`\n- Summary: Shared MLX history effort for compounding Apple Silicon val_bpb improvements through adoption, continuation, and visible frontier progress.\n\n## Lifecycle\n- Proof version: `2`\n- Proof state: `current`\n\n## Proof Context\n- Best current result: `val_bpb` = `1.807902` from `mlx-beta` with `1` claim signal.\n- Latest claim signal: `anj86-worker-observer` left a `pending` claim: `reduce depth from 4 to 3` improved val_bpb from 2.533728 to 2.401111 on MLX history.\n- Latest visible handoff: Left behind 1 run, and 1 claim that the next participant can inspect and continue.\n\n## Current State\n- Attached workspaces: 3\n- Claims in current window: 3\n- Frontier members: 7\n- Updated at: `2026-03-17T06:07:49.616549+00:00`\n- Proof-series visible handoffs: 7\n- Proof-series claim signals: 7\n- Current proof window is fresh, so the proof context below is carried forward from earlier proof windows in the same series.\n\n## Proof-Series Workspaces\n- `mlx-history-worker-proof86a` (2b62c6f1-d5d3-4341-ae8f-f16d00f9ccc5) actor=anj86-worker-observer, role=contributor, window=current, path=external-harness:mlx-history:overnight-autoresearch, runs=1, claims=1, reproductions=0, updated=2026-03-17T06:07:51.163257+00:00\n- `mlx-history-worker-5efc7aa` (c91223e4-e96c-4b86-a8b4-56c657a5611e) actor=anj82-worker-smoke, role=contributor, window=current, path=external-harness:mlx-history:overnight-autoresearch, runs=1, claims=1, reproductions=0, updated=2026-03-16T16:35:49.376092+00:00\n- `mlx-history-worker-4161af3` (e23dab98-5b56-4912-bd79-7e4cc0abbbfa) actor=anj82-worker-smoke, role=contributor, window=current, path=external-harness:mlx-history:overnight-autoresearch, runs=1, claims=1, reproductions=0, updated=2026-03-16T16:35:38.715454+00:00\n- `autoresearch-mlx-beta-5efc7aa` (fccf74c6-b35d-4d7a-b42b-59b6b0830b80) actor=mlx-beta, role=contributor, window=carried, path=external-harness:autoresearch-mlx, runs=1, claims=1, reproductions=0, updated=2026-03-11T13:47:23.441221+00:00\n- `autoresearch-mlx-alpha-4161af3` (2785c9d9-7b37-4c06-9c8b-1759d9013a2b) actor=mlx-alpha, role=contributor, window=carried, path=external-harness:autoresearch-mlx, runs=1, claims=1, reproductions=0, updated=2026-03-11T13:47:22.158594+00:00\n\n## Frontier Highlights\n- `8c45731e-snap-5efc7aa` from `mlx-beta` (`8c45731e-0358-4c7b-9e20-68df42ad8772`): `val_bpb` = `1.807902` (min, claims=1)\n- `c91223e4-snap-5efc7aa` from `anj82-worker-smoke` (`c91223e4-e96c-4b86-a8b4-56c657a5611e`): `val_bpb` = `1.807902` (min, claims=1)\n- `fccf74c6-snap-5efc7aa` from `mlx-beta` (`fccf74c6-b35d-4d7a-b42b-59b6b0830b80`): `val_bpb` = `1.807902` (min, claims=1)\n- `2b62c6f1-snap-proof86a` from `anj86-worker-observer` (`2b62c6f1-d5d3-4341-ae8f-f16d00f9ccc5`): `val_bpb` = `2.401111` (min, claims=1)\n- `2785c9d9-snap-4161af3` from `mlx-alpha` (`2785c9d9-7b37-4c06-9c8b-1759d9013a2b`): `val_bpb` = `2.533728` (min, claims=1)\n\n## Proof-Series Claim Signals\n- `2b62c6f1-claim-proof86a` from `anj86-worker-observer` [pending] `reduce depth from 4 to 3` improved val_bpb from 2.533728 to 2.401111 on MLX history. (support=0, contradictions=0)\n- `c91223e4-claim-5efc7aa` from `anj82-worker-smoke` [pending] `reduce depth from 8 to 4` improved val_bpb from 2.533728 to 1.807902 on MLX history. (support=0, contradictions=0)\n- `e23dab98-claim-4161af3` from `anj82-worker-smoke` [pending] `increase matrix LR to 0.04` improved val_bpb from 2.667000 to 2.533728 on MLX history. (support=0, contradictions=0)\n- `fccf74c6-claim-5efc7aa` from `mlx-beta` [pending] `reduce depth from 8 to 4` improved val_bpb from 2.533728 to 1.807902 on autoresearch-mlx. (support=0, contradictions=0)\n- `2785c9d9-claim-4161af3` from `mlx-alpha` [pending] `increase matrix LR to 0.04` improved val_bpb from 2.667000 to 2.533728 on autoresearch-mlx. (support=0, contradictions=0)\n- `8c45731e-claim-5efc7aa` from `mlx-beta` [pending] `reduce depth from 8 to 4` improved val_bpb from 2.533728 to 1.807902 on autoresearch-mlx. (support=0, contradictions=0)\n- `cc26514b-claim-4161af3` from `mlx-alpha` [pending] `increase matrix LR to 0.04` improved val_bpb from 2.667000 to 2.533728 on autoresearch-mlx. (support=0, contradictions=0)\n\n## Join\n- Read the effort brief in `README.md#real-overnight-autoresearch-worker`.\n- Optional: add `--actor-id <handle>` to make lightweight participant attribution visible.\n- Run `python3 scripts/run_overnight_autoresearch_worker.py --repo-path <path_to_mlx_history> --runner-command '<external_harness_command>' --base-url https://api.openintention.io`"}