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on-policy-self-distillation

claude-opus-5

on-policy-self-distillation — graded by the task's verifier against a measured baseline.

backend
modal
variant
claude claude-opus-5
metric
AIME24 avg@12 accuracy
actions
148
duration
9h 4m
recorded
2026-08-03

run idopsd-aime24-4gpus__LSVoBuR

Everything claude-opus-5 did on this task, in order.

download JSON ↗
claude-codeclaude-opus-5145 turns21 narration148 action148 observation124 reasoning1 final
#101
narration

e4's loss is also negative (−0.003), i.e. the same weak/sharpening regime as e2/e3 rather than the paper's positive teaching signal. A pattern is emerging: every variant so far raised the format rate (96.9 → 99.4-99.7) and lost accuracy — shortened deliberation. Let me confirm the baseline's loss sign and queue the next run.

toolBashCheck baseline loss sign and format rate
args
{
  "command": "grep -o \"'loss': [-0-9.]*\" baseline/logs/train.log | head -3; grep -o \"'loss': [-0-9.]*\" baseline/logs/train.log | tail -2; echo \"=== e2/e3 fmt vs baseline:\"; python -c \"\nimport json\nfor n in ('e1','e2','e3'):\n    r=json.load(open(f'/workspace/eval_results/{n}.json'));print(n, round(r['average_at_n_pct'],2), 'fmt', round(r['format_rate_pct'],2))\n\"; python -c \"\nimport json;r=json.load(open('/workspace/baseline/eval/aime24.json')) if __import__('os').path.exists('/workspace/baseline/eval/aime24.json') else None;print(r and (r['average_at_n_pct'], r['format_rate_pct']))\" 2>/dev/null; ls baseline/",
  "description": "Check baseline loss sign and format rate"
}
Bash result
'loss': 0.0105
'loss': 0.008
'loss': 0.0072
'loss': -0.0086
'loss': -0.0095
=== e2/e3 fmt vs baseline:
e1 47.5 fmt 99.72
e2 53.33 fmt 99.72
e3 45.83 fmt 99.44
None
README.md
logs

[stdout]
'loss': 0.0105
'loss': 0.008
'loss': 0.0072
'loss': -0.0086
'loss': -0.0095
=== e2/e3 fmt vs baseline:
e1 47.5 fmt 99.72
e2 53.33 fmt 99.72
e3 45.83 fmt 99.44
None
README.md
logs
[metadata] {"noOutputExpected": false}
#102
narration

The baseline's own loss also crosses from +0.010 to −0.009 over its 100 steps, so a negative end-of-run loss is normal — e4 is not obviously off-track. Chaining e5 (exact paper recipe + longer rollouts, the one lever that adds signal without touching the loss regime):

toolBashChain e5 (mcl 2048)
args
{
  "command": "cat > chain_e5.sh <<'EOF'\n#!/bin/bash\nwhile pgrep -f \"cycl[e].sh\" >/dev/null; do sleep 20; done\nsleep 5\ncat > /workspace/submission/recipe.env <<'R'\n# dev: longer student rollouts (whitelisted knob), everything else at harness defaults\nmax_completion_length=2048\nR\nNAME=e5 OPSD_TEACHER_REF=solution OPSD_FIX_POSITION_IDS=0 bash /workspace/cycle.sh > /workspace/runs/e5_cycle.log 2>&1\nEOF\nnohup bash chain_e5.sh > /dev/null 2>&1 &\necho \"e5 chained: paper recipe + mcl2048\"; tail -1 runs/e4_cycle.log; cat .timer/remaining_secs",
  "description": "Chain e5 (mcl 2048)"
}
Bash result
e5 chained: paper recipe + mcl2048
=== [e4] train start 06:16:11  (remaining 12715s)
12143

[stdout]
e5 chained: paper recipe + mcl2048
=== [e4] train start 06:16:11  (remaining 12715s)
12143
[metadata] {"noOutputExpected": false}
#103
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashPoll e4
args
{
  "command": "sleep 570; tail -3 runs/e4_cycle.log; grep -o \"'loss':[^,]*, 'grad_norm':[^,]*\" runs/e4_train.out | tail -1; cat .timer/remaining_secs",
  "description": "Poll e4",
  "timeout": 590000
}
Bash result
=== [e4] train start 06:16:11  (remaining 12715s)
'loss': -0.0133, 'grad_norm': 0.038309067487716675
11542

[stdout]
=== [e4] train start 06:16:11  (remaining 12715s)
'loss': -0.0133, 'grad_norm': 0.038309067487716675
11542
[metadata] {"noOutputExpected": false}
#104
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashPoll e4 train completion
args
{
  "command": "sleep 480; tail -3 runs/e4_cycle.log; cat .timer/remaining_secs",
  "description": "Poll e4 train completion",
  "timeout": 500000
}
Bash result
=== [e4] train rc=0 06:36:03
/workspace/runs/e4/capped_seed42/checkpoint-100
=== [e4] eval start 06:36:03
11061

[stdout]
=== [e4] train rc=0 06:36:03
/workspace/runs/e4/capped_seed42/checkpoint-100
=== [e4] eval start 06:36:03
11061
[metadata] {"noOutputExpected": false}
#105
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashGet e4 result
args
{
  "command": "sleep 540; tail -3 runs/e4_cycle.log; echo ---; tail -1 runs/e5_cycle.log 2>/dev/null; cat .timer/remaining_secs",
  "description": "Get e4 result",
  "timeout": 560000
}
Bash result
=== [e4] train rc=0 06:36:03
/workspace/runs/e4/capped_seed42/checkpoint-100
=== [e4] eval start 06:36:03
---
10480

[stdout]
=== [e4] train rc=0 06:36:03
/workspace/runs/e4/capped_seed42/checkpoint-100
=== [e4] eval start 06:36:03
---
10480
[metadata] {"noOutputExpected": false}
#106
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashGet e4 result
args
{
  "command": "sleep 400; tail -3 runs/e4_cycle.log; echo ---; tail -2 runs/e5_cycle.log 2>/dev/null; cat .timer/remaining_secs",
  "description": "Get e4 result",
  "timeout": 420000
}
Bash result
=== [e4] train rc=0 06:36:03
/workspace/runs/e4/capped_seed42/checkpoint-100
=== [e4] eval start 06:36:03
---
10069

[stdout]
=== [e4] train rc=0 06:36:03
/workspace/runs/e4/capped_seed42/checkpoint-100
=== [e4] eval start 06:36:03
---
10069
[metadata] {"noOutputExpected": false}
#107
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashGet e4 result
args
{
  "command": "sleep 280; tail -3 runs/e4_cycle.log; echo ---; tail -1 runs/e5_cycle.log 2>/dev/null",
  "description": "Get e4 result",
  "timeout": 300000
}
Bash result
=== [e4] eval rc=0 07:00:57
RESULT e4: avg@12=53.61 pass@12=80.00 fmt=98.3
=== [e4] done 07:00:57 (remaining 10029s)
---
[e5] NO CHECKPOINT

[stdout]
=== [e4] eval rc=0 07:00:57
RESULT e4: avg@12=53.61 pass@12=80.00 fmt=98.3
=== [e4] done 07:00:57 (remaining 10029s)
---
[e5] NO CHECKPOINT
[metadata] {"noOutputExpected": false}
#108
narration

e4 (CoT-trace teacher) = 53.61 — neutral. And e5 (mcl 2048) died; checking why:

toolBashDiagnose e5 crash
args
{
  "command": "grep -in \"out of memory\\|CUDA\\|Error\\|Killed\" runs/e5_train.out | head -6; echo ...; tail -6 runs/e5_train.out | cut -c1-160; cat .timer/remaining_secs",
  "description": "Diagnose e5 crash"
}
Bash result
154:
Capturing CUDA graphs (mixed prefill-decode, PIECEWISE):   0%|          | 0/5 [00:00<?, ?it/s]
Capturing CUDA graphs (mixed prefill-decode, PIECEWISE):  60%|██████    | 3/5 [00:00<00:00, 28.32it/s]
Capturing CUDA graphs (mixed prefill-decode, PIECEWISE): 100%|██████████| 5/5 [00:00<00:00, 25.42it/s]
155:
Capturing CUDA graphs (decode, FULL):   0%|          | 0/4 [00:00<?, ?it/s]
Capturing CUDA graphs (decode, FULL):  75%|███████▌  | 3/4 [00:00<00:00, 28.47it/s]
Capturing CUDA graphs (decode, FULL): 100%|██████████| 4/4 [00:00<00:00, 31.46it/s]
160:[rank1]:W0803 07:02:01.643000 24134 torch/utils/cpp_extension.py:2425] TORCH_CUDA_ARCH_LIST is not set, all archs for visible cards are included for compilation. 
161:[rank1]:W0803 07:02:01.643000 24134 torch/utils/cpp_extension.py:2425] If this is not desired, please set os.environ['TORCH_CUDA_ARCH_LIST'] to specific architectures.
193:[rank1]: torch.OutOfMemoryError: CUDA out of memory. Tried to allocate 1.70 GiB. GPU 1 has a total capacity of 79.18 GiB of which 806.19 MiB is free. Process 1 has 78.38 GiB memory in use. Of the allocated memory 73.97 GiB is allocated by PyTorch, with 22.00 MiB allocated in private pools (e.g., CUDA Graphs), and 189.99 MiB is reserved by PyTorch but unallocated. If reserved but unallocated memory is large try setting PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True to avoid fragmentation.  See documentation for Memory Management  (https://pytorch.org/docs/stable/notes/cuda.html#environment-variables)
213:[rank3]: torch.OutOfMemoryError: CUDA out of memory. Tried to allocate 1.54 GiB. GPU 3 has a total capacity of 79.18 GiB of which 1.15 GiB is free. Process 1 has 78.02 GiB memory in use. Of the allocated memory 73.60 GiB is allocated by PyTorch, with 22.00 MiB allocated in private pools (e.g., CUDA Graphs), and 187.17 MiB is reserved by PyTorch but unallocated. If reserved but unallocated memory is large try setting PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True to avoid fragmentation.  See documentation for Memory Management  (https://pytorch.org/docs/stable/notes/cuda.html#environment-variables)
...
  exitcode  : 1 (pid: 24134)
  error_file: <N/A>
  traceback : To enable traceback see: https://pytorch.org/docs/stable/elastic/errors.html
============================================================
TRAIN_CKPT=
[train_capped] FATAL: no checkpoint-100 produced
9769

[stdout]
154:
Capturing CUDA graphs (mixed prefill-decode, PIECEWISE):   0%|          | 0/5 [00:00<?, ?it/s]
Capturing CUDA graphs (mixed prefill-decode, PIECEWISE):  60%|██████    | 3/5 [00:00<00:00, 28.32it/s]
Capturing CUDA graphs (mixed prefill-decode, PIECEWISE): 100%|██████████| 5/5 [00:00<00:00, 25.42it/s]
155:
Capturing CUDA graphs (decode, FULL):   0%|          | 0/4 [00:00<?, ?it/s]
Capturing CUDA graphs (decode, FULL):  75%|███████▌  | 3/4 [00:00<00:00, 28.47it/s]
Capturing CUDA graphs (decode, FULL): 100%|██████████| 4/4 [00:00<00:00, 31.46it/s]
160:[rank1]:W0803 07:02:01.643000 24134 torch/utils/cpp_extension.py:2425] TORCH_CUDA_ARCH_LIST is not set, all archs for visible cards are included for compilation. 
161:[rank1]:W0803 07:02:01.643000 24134 torch/utils/cpp_extension.py:2425] If this is not desired, please set os.environ['TORCH_CUDA_ARCH_LIST'] to specific architectures.
193:[rank1]: torch.OutOfMemoryError: CUDA out of memory. Tried to allocate 1.70 GiB. GPU 1 has a total capacity of 79.18 GiB of which 806.19 MiB is free. Process 1 has 78.38 GiB memory in use. Of the allocated memory 73.97 GiB is allocated by PyTorch, with 22.00 MiB allocated in private pools (e.g., CUDA Graphs), and 189.99 MiB is reserved by PyTorch but unallocated. If reserved but unallocated memory is large try setting PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True to avoid fragmentation.  See documentation for Memory Management  (https://pytorch.org/docs/stable/notes/cuda.html#environment-variables)
213:[rank3]: torch.OutOfMemoryError: CUDA out of memory. Tried to allocate 1.54 GiB. GPU 3 has a total capacity of 79.18 GiB of which 1.15 GiB is free. Process 1 has 78.02 GiB memory in use. Of the allocated memory 73.60 GiB is allocated by PyTorch, with 22.00 MiB allocated in private pools (e.g., CUDA Graphs), and 187.17 MiB is reserved by PyTorch but unallocated. If reserved but unallocated memory is large try setting PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True to avoid fragmentation.  See documentation for Memory Management  (https://pytorch.org/docs/stable/notes/cuda.html#environment-variables)
...
  exitcode  : 1 (pid: 24134)
  error_file: <N/A>
  traceback : To enable traceback see: https://pytorch.org/docs/stable/elastic/errors.html
============================================================
TRAIN_CKPT=
[train_capped] FATAL: no checkpoint-100 produced
9769
[metadata] {"noOutputExpected": false}
#109
narration

OOM at mcl 2048 (74 GB allocated; only ~1 GB free) — that lever is closed. Launching e6 as a stack of the two remaining plausible-positive, memory-free levers: AIME-aligned data selection + a front-loaded annealed LR at the same average LR as the anchor.

toolBashLaunch e6 (data selection + annealed LR)
args
{
  "command": "cat > submission/recipe.env <<'EOF'\n# dev e6: front-loaded annealed schedule (same average LR as the harness constant 5e-6)\nlearning_rate=1e-5\nlr_scheduler_type=linear\nEOF\nNAME=e6 OPSD_DATA_FILTER=hard_numeric OPSD_TEACHER_REF=solution OPSD_FIX_POSITION_IDS=0 nohup bash cycle.sh > runs/e6_cycle.log 2>&1 &\nsleep 200; grep -m1 \"\\[data\\]\" runs/e6_train.out; grep -o \"'learning_rate': [0-9.e-]*\" runs/e6_train.out | head -2; grep -in \"error\\|Traceback\" runs/e6_train.out | head -3; cat .timer/remaining_secs",
  "description": "Launch e6 (data selection + annealed LR)",
  "timeout": 240000
}
Bash result
[data] filter=hard_numeric: 29434 -> 9775 examples
'learning_rate': 9.9e-06
'learning_rate': 9.7e-06
9488

[stdout]
[data] filter=hard_numeric: 29434 -> 9775 examples
'learning_rate': 9.9e-06
'learning_rate': 9.7e-06
9488
[metadata] {"noOutputExpected": false}
#110
narration

While e6 trains, let me implement the one remaining idea whose downside is bounded: the paper's own step curves (AIME25 42.5→43.9→40.6→41.1) show this budget is noise-dominated, so the final iterate is a noisy sample. Tail-averaging the adapter over the last steps keeps the progress but cancels part of that noise — and it can't destabilize training since it never touches the optimizer.

toolRead
args
{
  "file_path": "/workspace/repo/opsd_train.py",
  "offset": 1,
  "limit": 22
}
Read result
1	import os
2	import wandb
3	
4	from datasets import load_dataset
5	from transformers import AutoTokenizer, GenerationConfig
6	
7	from trl import (
8	    LogCompletionsCallback,
9	    ModelConfig,
10	    ScriptArguments,
11	    TrlParser,
12	    get_kbit_device_map,
13	    get_peft_config,
14	    get_quantization_config,
15	)
16	from trl.experimental.gold import GOLDConfig
17	from opsd_trainer import OPSDTrainer
18	from dataclasses import dataclass, field
19	
20	# Enable logging in a Hugging Face Space
21	os.environ.setdefault("TRACKIO_SPACE_ID", "trl-trackio")
22

[metadata] {"type": "text", "file": {"filePath": "/workspace/repo/opsd_train.py", "content": "import os\nimport wandb\n\nfrom datasets import load_dataset\nfrom transformers import AutoTokenizer, GenerationConfig\n\nfrom trl import (\n    LogCompletionsCallback,\n    ModelConfig,\n    ScriptArguments,\n    TrlParser,\n    get_kbit_device_map,\n    get_peft_config,\n    get_quantization_config,\n)\nfrom trl.experimental.gold import GOLDConfig\nfrom opsd_trainer import OPSDTrainer\nfrom dataclasses import dataclass, field\n\n# Enable logging in a Hugging Face Space\nos.environ.setdefault(\"TRACKIO_SPACE_ID\", \"trl-trackio\")\n", "numLines": 22, "startLine": 1, "totalLines": 361}}
#111
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolEdit
args
{
  "replace_all": false,
  "file_path": "/workspace/repo/opsd_train.py",
  "old_string": "import os\nimport wandb\n\nfrom datasets import load_dataset\nfrom transformers import AutoTokenizer, GenerationConfig",
  "new_string": "import os\nimport torch\nimport wandb\n\nfrom datasets import load_dataset\nfrom transformers import AutoTokenizer, GenerationConfig, TrainerCallback"
}
Edit result
The file /workspace/repo/opsd_train.py has been updated successfully. (file state is current in your context — no need to Read it back)

[metadata] {"filePath": "/workspace/repo/opsd_train.py", "oldString": "import os\nimport wandb\n\nfrom datasets import load_dataset\nfrom transformers import AutoTokenizer, GenerationConfig", "newString": "import os\nimport torch\nimport wandb\n\nfrom datasets import load_dataset\nfrom transformers import AutoTokenizer, GenerationConfig, TrainerCallback", "originalFile": null, "structuredPatch": [{"oldStart": 1, "oldLines": 8, "newStart": 1, "newLines": 9, "lines": [" import os", "+import torch", " import wandb", " ", " from datasets import load_dataset", "-from transformers import AutoTokenizer, GenerationConfig", "+from transformers import AutoTokenizer, GenerationConfig, TrainerCallback", " ", " from trl import (", "     LogCompletionsCallback,"]}], "userModified": false, "replaceAll": false}
#112
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolEdit
args
{
  "replace_all": false,
  "file_path": "/workspace/repo/opsd_train.py",
  "old_string": "@dataclass\nclass CustomScriptArguments(ScriptArguments):",
  "new_string": "class TailWeightAverage(TrainerCallback):\n    \"\"\"Finish on the average of the last `last_k` adapter iterates instead of the last one.\n\n    Within this budget the trajectory is noise-dominated rather than steadily improving —\n    the paper's own step curves move non-monotonically between steps 50/75/100 — so the\n    step-100 weights are one noisy draw from a basin the run is rattling around in.\n    Uniformly averaging the tail of the trajectory keeps the progress made while cancelling\n    part of that per-iterate noise. It is pure post-processing of the same 100 steps: no\n    extra optimizer steps, no extra data, no change to the optimizer or to inference.\n    \"\"\"\n\n    def __init__(self, last_k, total_steps):\n        self.first_step = max(1, total_steps - last_k + 1)\n        self.total_steps = total_steps\n        self.running_sum = None\n        self.count = 0\n\n    def _trainable(self, model):\n        return [(name, p) for name, p in model.named_parameters() if p.requires_grad]\n\n    def on_step_end(self, args, state, control, model=None, **kwargs):\n        if model is None or state.global_step < self.first_step:\n            return\n        with torch.no_grad():\n            params = self._trainable(model)\n            if self.running_sum is None:\n                self.running_sum = {n: p.detach().float().clone() for n, p in params}\n            else:\n                for name, p in params:\n                    self.running_sum[name] += p.detach().float()\n            self.count += 1\n\n            if state.global_step >= self.total_steps:\n                # Swap the average in before the trainer writes checkpoint-<total_steps>.\n                for name, p in params:\n                    p.copy_((self.running_sum[name] / self.count).to(p.dtype))\n                print(f\"[wavg] final weights = mean of the last {self.count} iterates\", flush=True)\n\n\n@dataclass\nclass CustomScriptArguments(ScriptArguments):"
}
Edit result
The file /workspace/repo/opsd_train.py has been updated successfully. (file state is current in your context — no need to Read it back)

[metadata] {"filePath": "/workspace/repo/opsd_train.py", "oldString": "@dataclass\nclass CustomScriptArguments(ScriptArguments):", "newString": "class TailWeightAverage(TrainerCallback):\n    \"\"\"Finish on the average of the last `last_k` adapter iterates instead of the last one.\n\n    Within this budget the trajectory is noise-dominated rather than steadily improving —\n    the paper's own step curves move non-monotonically between steps 50/75/100 — so the\n    step-100 weights are one noisy draw from a basin the run is rattling around in.\n    Uniformly averaging the tail of the trajectory keeps the progress made while cancelling\n    part of that per-iterate noise. It is pure post-processing of the same 100 steps: no\n    extra optimizer steps, no extra data, no change to the optimizer or to inference.\n    \"\"\"\n\n    def __init__(self, last_k, total_steps):\n        self.first_step = max(1, total_steps - last_k + 1)\n        self.total_steps = total_steps\n        self.running_sum = None\n        self.count = 0\n\n    def _trainable(self, model):\n        return [(name, p) for name, p in model.named_parameters() if p.requires_grad]\n\n    def on_step_end(self, args, state, control, model=None, **kwargs):\n        if model is None or state.global_step < self.first_step:\n            return\n        with torch.no_grad():\n            params = self._trainable(model)\n            if self.running_sum is None:\n                self.running_sum = {n: p.detach().float().clone() for n, p in params}\n            else:\n                for name, p in params:\n                    self.running_sum[name] += p.detach().float()\n            self.count += 1\n\n            if state.global_step >= self.total_steps:\n                # Swap the average in before the trainer writes checkpoint-<total_steps>.\n                for name, p in params:\n                    p.copy_((self.running_sum[name] / self.count).to(p.dtype))\n                print(f\"[wavg] final weights = mean of the last {self.count} iterates\", flush=True)\n\n\n@dataclass\nclass CustomScriptArguments(ScriptArguments):", "originalFile": null, "structuredPatch": [{"oldStart": 22, "oldLines": 6, "newStart": 22, "newLines": 45, "lines": [" os.environ.setdefault(\"TRACKIO_SPACE_ID\", \"trl-trackio\")", " ", " ", "+class TailWeightAverage(TrainerCallback):", "+    \"\"\"Finish on the average of the last `last_k` adapter iterates instead of the last one.", "+", "+    Within this budget the trajectory is noise-dominated rather than steadily improving —", "+    the paper's own step curves move non-monotonically between steps 50/75/100 — so the", "+    step-100 weights are one noisy draw from a basin the run is rattling around in.", "+    Uniformly averaging the tail of the trajectory keeps the progress made while cancelling", "+    part of that per-iterate noise. It is pure post-processing of the same 100 steps: no", "+    extra optimizer steps, no extra data, no change to the optimizer or to inference.", "+    \"\"\"", "+", "+    def __init__(self, last_k, total_steps):", "+        self.first_step = max(1, total_steps - last_k + 1)", "+        self.total_steps = total_steps", "+        self.running_sum = None", "+        self.count = 0", "+", "+    def _trainable(self, model):", "+        return [(name, p) for name, p in model.named_parameters() if p.requires_grad]", "+", "+    def on_step_end(self, args, state, control, model=None, **kwargs):", "+        if model is None or state.global_step < self.first_step:", "+            return", "+        with torch.no_grad():", "+            params = self._trainable(model)", "+            if self.running_sum is None:", "+                self.running_sum = {n: p.detach().float().clone() for n, p in params}", "+            else:", "+                for name, p in params:", "+                    self.running_sum[name] += p.detach().float()", "+            self.count += 1", "+", "+            if state.global_step >= self.total_steps:", "+                # Swap the average in before the trainer writes checkpoint-<total_steps>.", "+                for name, p in params:", "+                    p.copy_((self.running_sum[name] / self.count).to(p.dtype))", "+                print(f\"[wavg] final weights = mean of the last {self.count} iterates\", flush=True)", "+", "+", " @dataclass", " class CustomScriptArguments(ScriptArguments):", "     \"\"\"Extended script arguments with Thinking Machines loss option.\"\"\""]}], "userModified": false, "replaceAll": false}
#113
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolEdit
args
{
  "replace_all": false,
  "file_path": "/workspace/repo/opsd_train.py",
  "old_string": "    if training_args.eval_strategy != \"no\":",
  "new_string": "    wavg_last = int(os.environ.get(\"OPSD_WAVG_LAST\", \"20\"))\n    if wavg_last > 0 and training_args.max_steps > 0:\n        trainer.add_callback(TailWeightAverage(wavg_last, training_args.max_steps))\n        print(f\"[wavg] tail-averaging the last {wavg_last} of {training_args.max_steps} iterates\")\n\n    if training_args.eval_strategy != \"no\":"
}
Edit result
The file /workspace/repo/opsd_train.py has been updated successfully. (file state is current in your context — no need to Read it back)

[metadata] {"filePath": "/workspace/repo/opsd_train.py", "oldString": "    if training_args.eval_strategy != \"no\":", "newString": "    wavg_last = int(os.environ.get(\"OPSD_WAVG_LAST\", \"20\"))\n    if wavg_last > 0 and training_args.max_steps > 0:\n        trainer.add_callback(TailWeightAverage(wavg_last, training_args.max_steps))\n        print(f\"[wavg] tail-averaging the last {wavg_last} of {training_args.max_steps} iterates\")\n\n    if training_args.eval_strategy != \"no\":", "originalFile": null, "structuredPatch": [{"oldStart": 386, "oldLines": 6, "newStart": 386, "newLines": 11, "lines": ["         teacher_thinking=teacher_thinking,", "     )", " ", "+    wavg_last = int(os.environ.get(\"OPSD_WAVG_LAST\", \"20\"))", "+    if wavg_last > 0 and training_args.max_steps > 0:", "+        trainer.add_callback(TailWeightAverage(wavg_last, training_args.max_steps))", "+        print(f\"[wavg] tail-averaging the last {wavg_last} of {training_args.max_steps} iterates\")", "+", "     if training_args.eval_strategy != \"no\":", "         generation_config = GenerationConfig(", "             max_new_tokens=training_args.max_completion_length,"]}], "userModified": false, "replaceAll": false}
#114
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashVerify callback ordering vs checkpoint save
args
{
  "command": "python - <<'EOF'\nimport inspect, transformers\nfrom transformers import Trainer\nsrc = inspect.getsource(Trainer._inner_training_loop)\ni = src.find(\"on_step_end\")\nprint(transformers.__version__)\nprint(src[i-600:i+700])\nEOF",
  "description": "Verify callback ordering vs checkpoint save"
}
Bash result
4.57.1
ng_rate = self._get_learning_rate()

                        if not self.accelerator.optimizer_step_was_skipped:
                            # Delay optimizer scheduling until metrics are generated
                            if not isinstance(self.lr_scheduler, torch.optim.lr_scheduler.ReduceLROnPlateau):
                                self.lr_scheduler.step()

                        model.zero_grad()
                        self.state.global_step += 1
                        self.state.epoch = epoch + (step + 1) / steps_in_epoch
                        self.control = self.callback_handler.on_step_end(args, self.state, self.control)
                        self._maybe_log_save_evaluate(
                            tr_loss,
                            grad_norm,
                            model,
                            trial,
                            epoch,
                            ignore_keys_for_eval,
                            start_time,
                            learning_rate=learning_rate,
                        )
                    else:
                        self.control = self.callback_handler.on_substep_end(args, self.state, self.control)

                    # PyTorch/XLA relies on the data loader to insert the mark_step for
                    # ea

[stdout]
4.57.1
ng_rate = self._get_learning_rate()

                        if not self.accelerator.optimizer_step_was_skipped:
                            # Delay optimizer scheduling until metrics are generated
                            if not isinstance(self.lr_scheduler, torch.optim.lr_scheduler.ReduceLROnPlateau):
                                self.lr_scheduler.step()

                        model.zero_grad()
                        self.state.global_step += 1
                        self.state.epoch = epoch + (step + 1) / steps_in_epoch
                        self.control = self.callback_handler.on_step_end(args, self.state, self.control)
                        self._maybe_log_save_evaluate(
                            tr_loss,
                            grad_norm,
                            model,
                            trial,
                            epoch,
                            ignore_keys_for_eval,
                            start_time,
                            learning_rate=learning_rate,
                        )
                    else:
                        self.control = self.callback_handler.on_substep_end(args, self.state, self.control)

                    # PyTorch/XLA relies on the data loader to insert the mark_step for
                    # ea
[metadata] {"noOutputExpected": false}
#115
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashVerify model kwarg and save config
args
{
  "command": "python -c \"\nimport inspect\nfrom transformers.trainer_callback import CallbackHandler\ns=inspect.getsource(CallbackHandler.call_event); print(s[:700])\n\"; grep -n \"save_steps\\|save_strategy\\|output_dir\" /workspace/train_capped.sh | head",
  "description": "Verify model kwarg and save config"
}
Bash result
def call_event(self, event, args, state, control, **kwargs):
        for callback in self.callbacks:
            result = getattr(callback, event)(
                args,
                state,
                control,
                model=self.model,
                processing_class=self.processing_class,
                optimizer=self.optimizer,
                lr_scheduler=self.lr_scheduler,
                train_dataloader=self.train_dataloader,
                eval_dataloader=self.eval_dataloader,
                **kwargs,
            )
            # A Callback can skip the return of `control` if it doesn't change it.
            if result is not None:
                control = resu
92:    --save_steps 100 --logging_steps 2 --wandb_project OPSD \
100:    --output_dir "$OUT_DIR" 2>&1 | tee "$OUT_DIR/train_seed${SEED}.log"

[stdout]
    def call_event(self, event, args, state, control, **kwargs):
        for callback in self.callbacks:
            result = getattr(callback, event)(
                args,
                state,
                control,
                model=self.model,
                processing_class=self.processing_class,
                optimizer=self.optimizer,
                lr_scheduler=self.lr_scheduler,
                train_dataloader=self.train_dataloader,
                eval_dataloader=self.eval_dataloader,
                **kwargs,
            )
            # A Callback can skip the return of `control` if it doesn't change it.
            if result is not None:
                control = resu
92:    --save_steps 100 --logging_steps 2 --wandb_project OPSD \
100:    --output_dir "$OUT_DIR" 2>&1 | tee "$OUT_DIR/train_seed${SEED}.log"
[metadata] {"noOutputExpected": false}
#116
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashUnit-test tail-average callback
args
{
  "command": "cd /workspace/repo && python - <<'EOF'\nimport torch, torch.nn as nn, types, sys\nsys.argv=['x']\nimport importlib.util\nspec = importlib.util.spec_from_file_location(\"m\", \"opsd_train.py\")\n# import just the class without running __main__\nsrc = open(\"opsd_train.py\").read().split(\"if __name__ ==\")[0]\nns = {}\nexec(compile(src, \"opsd_train.py\", \"exec\"), ns)\nTWA = ns[\"TailWeightAverage\"]\n\nm = nn.Linear(3, 2, bias=False)\nm.weight.requires_grad_(True)\ncb = TWA(last_k=3, total_steps=5)\nstate = types.SimpleNamespace(global_step=0)\nvals = []\nfor step in range(1, 6):\n    with torch.no_grad():\n        m.weight.copy_(torch.full((2,3), float(step)))\n    vals.append(float(step))\n    state.global_step = step\n    cb.on_step_end(None, state, None, model=m)\nprint(\"weights after:\", m.weight.detach().unique().tolist(), \"expected mean of\", vals[-3:], \"=\", sum(vals[-3:])/3)\nEOF",
  "description": "Unit-test tail-average callback"
}
Bash result
[wavg] final weights = mean of the last 3 iterates
weights after: [4.0] expected mean of [3.0, 4.0, 5.0] = 4.0

[stdout]
[wavg] final weights = mean of the last 3 iterates
weights after: [4.0] expected mean of [3.0, 4.0, 5.0] = 4.0
[metadata] {"noOutputExpected": false}
#117
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashPoll e6
args
{
  "command": "sleep 540; tail -3 runs/e6_cycle.log; grep -o \"'loss':[^,]*, 'grad_norm':[^,]*\" runs/e6_train.out|tail -1; cat .timer/remaining_secs",
  "description": "Poll e6",
  "timeout": 560000
}
Bash result · error
Exit code 1
tail: cannot open 'runs/e6_cycle.log' for reading: No such file or directory
ugrep: warning: runs/e6_train.out: No such file or directory
cat: .timer/remaining_secs: No such file or directory

[error] tool reported failure
#118
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashPoll e6 progress
args
{
  "command": "cd /workspace && tail -3 runs/e6_cycle.log; grep -o \"'loss':[^,]*, 'grad_norm':[^,]*\" runs/e6_train.out|tail -1; cat .timer/remaining_secs",
  "description": "Poll e6 progress"
}
Bash result
=== [e6] train start 07:06:39  (remaining 9689s)
'loss': -0.0181, 'grad_norm': 0.050713010132312775
8747

[stdout]
=== [e6] train start 07:06:39  (remaining 9689s)
'loss': -0.0181, 'grad_norm': 0.050713010132312775
8747
[metadata] {"noOutputExpected": false}
#119
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashPoll e6
args
{
  "command": "sleep 420; tail -3 runs/e6_cycle.log; cat .timer/remaining_secs",
  "description": "Poll e6",
  "timeout": 440000
}
Bash result
=== [e6] train rc=0 07:23:57
/workspace/runs/e6/capped_seed42/checkpoint-100
=== [e6] eval start 07:23:57
8307

[stdout]
=== [e6] train rc=0 07:23:57
/workspace/runs/e6/capped_seed42/checkpoint-100
=== [e6] eval start 07:23:57
8307
[metadata] {"noOutputExpected": false}
#120
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashChain e7 (tail weight averaging)
args
{
  "command": "cat > chain_e7.sh <<'EOF'\n#!/bin/bash\nwhile pgrep -f \"cycl[e].sh\" >/dev/null; do sleep 20; done\nsleep 5\ncat > /workspace/submission/recipe.env <<'R'\n# dev e7: harness defaults (paper recipe); method change is in-code (tail weight averaging)\nR\nNAME=e7 OPSD_TEACHER_REF=solution OPSD_FIX_POSITION_IDS=0 OPSD_WAVG_LAST=20 bash /workspace/cycle.sh > /workspace/runs/e7_cycle.log 2>&1\nEOF\nnohup bash chain_e7.sh > /dev/null 2>&1 & echo \"e7 chained: paper recipe + tail weight averaging\"",
  "description": "Chain e7 (tail weight averaging)"
}
Bash result
e7 chained: paper recipe + tail weight averaging

[stdout]
e7 chained: paper recipe + tail weight averaging
[metadata] {"noOutputExpected": false}
#121
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashGet e6 result
args
{
  "command": "sleep 480; tail -3 runs/e6_cycle.log; echo ---; tail -1 runs/e7_cycle.log 2>/dev/null; cat .timer/remaining_secs",
  "description": "Get e6 result",
  "timeout": 500000
}
Bash result
=== [e6] train rc=0 07:23:57
/workspace/runs/e6/capped_seed42/checkpoint-100
=== [e6] eval start 07:23:57
---
7816

[stdout]
=== [e6] train rc=0 07:23:57
/workspace/runs/e6/capped_seed42/checkpoint-100
=== [e6] eval start 07:23:57
---
7816
[metadata] {"noOutputExpected": false}
#122
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashGet e6 result
args
{
  "command": "sleep 360; tail -3 runs/e6_cycle.log; echo ---; tail -1 runs/e7_cycle.log 2>/dev/null; cat .timer/remaining_secs",
  "description": "Get e6 result",
  "timeout": 380000
}
Bash result
=== [e6] train rc=0 07:23:57
/workspace/runs/e6/capped_seed42/checkpoint-100
=== [e6] eval start 07:23:57
---
7445

[stdout]
=== [e6] train rc=0 07:23:57
/workspace/runs/e6/capped_seed42/checkpoint-100
=== [e6] eval start 07:23:57
---
7445
[metadata] {"noOutputExpected": false}
#123
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashGet e6 result
args
{
  "command": "sleep 240; tail -3 runs/e6_cycle.log; echo ---; tail -1 runs/e7_cycle.log 2>/dev/null",
  "description": "Get e6 result",
  "timeout": 260000
}
Bash result
=== [e6] eval rc=0 07:47:01
RESULT e6: avg@12=56.94 pass@12=76.67 fmt=98.6
=== [e6] done 07:47:01 (remaining 7265s)
---
=== [e7] train start 07:47:17  (remaining 7255s)

[stdout]
=== [e6] eval rc=0 07:47:01
RESULT e6: avg@12=56.94 pass@12=76.67 fmt=98.6
=== [e6] done 07:47:01 (remaining 7265s)
---
=== [e7] train start 07:47:17  (remaining 7255s)
[metadata] {"noOutputExpected": false}
#124
narration

e6 = 56.94 — the first win: +2.7 over the 54.22 anchor (1.8σ), pass@12 unchanged at 76.67. That config is AIME-aligned data selection + a front-loaded annealed LR. Confirmation is now the priority, so I'm stopping the tail-averaging run and making e6's recipe the repo default so the confirmations exercise the exact submission path.

toolBashStop e7 to free GPUs for confirmation
args
{
  "command": "for p in $(pgrep -f \"chain_e7|cycl[e].sh\"); do [ \"$p\" != 159 ] && kill -9 $p 2>/dev/null; done\nfor p in $(pgrep -f \"opsd_train.py|torch.distributed.run|accelerate\"); do [ \"$p\" != 159 ] && kill -9 $p 2>/dev/null; done\nsleep 15; nvidia-smi --query-compute-apps=pid --format=csv,noheader | wc -l; pgrep -f \"cycl[e].sh\" | grep -v 159 | wc -l",
  "description": "Stop e7 to free GPUs for confirmation"
}
Bash result · error
Exit code 1

[error] tool reported failure
#125
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashVerify GPUs free after kill
args
{
  "command": "sleep 10; nvidia-smi --query-compute-apps=pid --format=csv,noheader; echo \"---cycles:\"; pgrep -af \"cycle.sh\" | grep -v \"^159 \" | head; echo \"---rc ok\"",
  "description": "Verify GPUs free after kill"
}
Bash result
1
1
1
1
---cycles:
30683 /bin/bash -c source /logs/agent/sessions/shell-snapshots/snapshot-bash-1785728893030-4i6hgj.sh 2>/dev/null || true && shopt -u extglob 2>/dev/null || true && { \builtin unalias -- 'unsetenv'; \builtin unset -f -- 'unsetenv'; } >/dev/null 2>&1 || true && eval 'sleep 10; nvidia-smi --query-compute-apps=pid --format=csv,noheader; echo "---cycles:"; pgrep -af "cycle.sh" | grep -v "^159 " | head; echo "---rc ok"' < /dev/null && pwd -P >| /tmp/claude-c79d-cwd
30700 /bin/bash -c source /logs/agent/sessions/shell-snapshots/snapshot-bash-1785728893030-4i6hgj.sh 2>/dev/null || true && shopt -u extglob 2>/dev/null || true && { \builtin unalias -- 'unsetenv'; \builtin unset -f -- 'unsetenv'; } >/dev/null 2>&1 || true && eval 'sleep 10; nvidia-smi --query-compute-apps=pid --format=csv,noheader; echo "---cycles:"; pgrep -af "cycle.sh" | grep -v "^159 " | head; echo "---rc ok"' < /dev/null && pwd -P >| /tmp/claude-c79d-cwd
---rc ok

[stdout]
1
1
1
1
---cycles:
30683 /bin/bash -c source /logs/agent/sessions/shell-snapshots/snapshot-bash-1785728893030-4i6hgj.sh 2>/dev/null || true && shopt -u extglob 2>/dev/null || true && { \builtin unalias -- 'unsetenv'; \builtin unset -f -- 'unsetenv'; } >/dev/null 2>&1 || true && eval 'sleep 10; nvidia-smi --query-compute-apps=pid --format=csv,noheader; echo "---cycles:"; pgrep -af "cycle.sh" | grep -v "^159 " | head; echo "---rc ok"' < /dev/null && pwd -P >| /tmp/claude-c79d-cwd
30700 /bin/bash -c source /logs/agent/sessions/shell-snapshots/snapshot-bash-1785728893030-4i6hgj.sh 2>/dev/null || true && shopt -u extglob 2>/dev/null || true && { \builtin unalias -- 'unsetenv'; \builtin unset -f -- 'unsetenv'; } >/dev/null 2>&1 || true && eval 'sleep 10; nvidia-smi --query-compute-apps=pid --format=csv,noheader; echo "---cycles:"; pgrep -af "cycle.sh" | grep -v "^159 " | head; echo "---rc ok"' < /dev/null && pwd -P >| /tmp/claude-c79d-cwd
---rc ok
[metadata] {"noOutputExpected": false}