=== Avatar Training (fire-and-forget) === Script: train_pi0fast.py Started: 2026-03-11 04:06:33 UTC >>> [0/4] Raising file descriptor limit... ulimit -n = 65536 >>> [1/4] Setting environment... HF_TOKEN set: 37 chars WANDB_API_KEY set: 0 chars >>> [2/4] Logging into HuggingFace... The token has not been saved to the git credentials helper. Pass `add_to_git_credential=True` in this function directly or `--add-to-git-credential` if using via `hf`CLI if you want to set the git credential as well. Token is valid (permission: write). The token `beta-pc` has been saved to /root/.cache/huggingface/stored_tokens Your token has been saved to /root/.cache/huggingface/token Login successful. Note: Environment variable`HF_TOKEN` is set and is the current active token independently from the token you've just configured. ⚠️ Warning: 'huggingface-cli login' is deprecated. Use 'hf auth login' instead. >>> [3/4] Pre-downloading pretrained model... Downloading lerobot/pi0fast-base (default)... Fetching 6 files: 0%| | 0/6 [00:00>> [4/4] Launching accelerate with 4 GPUs... Script: train_pi0fast.py Train args: --dataset fixed_motion_simple --steps 5000 --batch-size 6 --lr 5e-5 --save-freq 1000 --push-to-hub --num-workers 8 --task-text move arm back and forth The following values were not passed to `accelerate launch` and had defaults used instead: `--num_machines` was set to a value of `1` `--mixed_precision` was set to a value of `'no'` `--dynamo_backend` was set to a value of `'no'` To avoid this warning pass in values for each of the problematic parameters or run `accelerate config`. usage: train_pi0fast.py [-h] --dataset {fish_box_left_joint,simple_alpha_backforth} [--steps STEPS] [--batch-size BATCH_SIZE] [--lr LR] [--chunk-size CHUNK_SIZE] [--save-freq SAVE_FREQ] [--log-freq LOG_FREQ] [--num-workers NUM_WORKERS] [--seed SEED] [--push-to-hub] [--pretrained-path PRETRAINED_PATH] [--wandb] [--output-dir OUTPUT_DIR] --task-text TASK_TEXT train_pi0fast.py: error: argument --dataset: invalid choice: 'fixed_motion_simple' (choose from 'fish_box_left_joint', 'simple_alpha_backforth') usage: train_pi0fast.py [-h] --dataset {fish_box_left_joint,simple_alpha_backforth} [--steps STEPS] [--batch-size BATCH_SIZE] [--lr LR] [--chunk-size CHUNK_SIZE] [--save-freq SAVE_FREQ] [--log-freq LOG_FREQ] [--num-workers NUM_WORKERS] [--seed SEED] [--push-to-hub] [--pretrained-path PRETRAINED_PATH] [--wandb] [--output-dir OUTPUT_DIR] --task-text TASK_TEXT train_pi0fast.py: error: argument --dataset: invalid choice: 'fixed_motion_simple' (choose from 'fish_box_left_joint', 'simple_alpha_backforth') usage: train_pi0fast.py [-h] --dataset {fish_box_left_joint,simple_alpha_backforth} [--steps STEPS] [--batch-size BATCH_SIZE] [--lr LR] [--chunk-size CHUNK_SIZE] [--save-freq SAVE_FREQ] [--log-freq LOG_FREQ] [--num-workers NUM_WORKERS] [--seed SEED] [--push-to-hub] [--pretrained-path PRETRAINED_PATH] [--wandb] [--output-dir OUTPUT_DIR] --task-text TASK_TEXT train_pi0fast.py: error: argument --dataset: invalid choice: 'fixed_motion_simple' (choose from 'fish_box_left_joint', 'simple_alpha_backforth') usage: train_pi0fast.py [-h] --dataset {fish_box_left_joint,simple_alpha_backforth} [--steps STEPS] [--batch-size BATCH_SIZE] [--lr LR] [--chunk-size CHUNK_SIZE] [--save-freq SAVE_FREQ] [--log-freq LOG_FREQ] [--num-workers NUM_WORKERS] [--seed SEED] [--push-to-hub] [--pretrained-path PRETRAINED_PATH] [--wandb] [--output-dir OUTPUT_DIR] --task-text TASK_TEXT train_pi0fast.py: error: argument --dataset: invalid choice: 'fixed_motion_simple' (choose from 'fish_box_left_joint', 'simple_alpha_backforth') E0311 04:06:54.963000 2395 torch/distributed/elastic/multiprocessing/api.py:874] failed (exitcode: 2) local_rank: 0 (pid: 2463) of binary: /usr/bin/python Traceback (most recent call last): File "/usr/local/bin/accelerate", line 8, in sys.exit(main()) ^^^^^^ File "/usr/local/lib/python3.11/dist-packages/accelerate/commands/accelerate_cli.py", line 50, in main args.func(args) File "/usr/local/lib/python3.11/dist-packages/accelerate/commands/launch.py", line 1396, in launch_command multi_gpu_launcher(args) File "/usr/local/lib/python3.11/dist-packages/accelerate/commands/launch.py", line 1023, in multi_gpu_launcher distrib_run.run(args) File "/usr/local/lib/python3.11/dist-packages/torch/distributed/run.py", line 883, in run elastic_launch( File "/usr/local/lib/python3.11/dist-packages/torch/distributed/launcher/api.py", line 139, in __call__ return launch_agent(self._config, self._entrypoint, list(args)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/local/lib/python3.11/dist-packages/torch/distributed/launcher/api.py", line 270, in launch_agent raise ChildFailedError( torch.distributed.elastic.multiprocessing.errors.ChildFailedError: ============================================================ /tmp/train_pi0fast.py FAILED ------------------------------------------------------------ Failures: [1]: time : 2026-03-11_04:06:54 host : ab6fe09eaab5 rank : 1 (local_rank: 1) exitcode : 2 (pid: 2464) error_file: traceback : To enable traceback see: https://pytorch.org/docs/stable/elastic/errors.html [2]: time : 2026-03-11_04:06:54 host : ab6fe09eaab5 rank : 2 (local_rank: 2) exitcode : 2 (pid: 2465) error_file: traceback : To enable traceback see: https://pytorch.org/docs/stable/elastic/errors.html [3]: time : 2026-03-11_04:06:54 host : ab6fe09eaab5 rank : 3 (local_rank: 3) exitcode : 2 (pid: 2466) error_file: traceback : To enable traceback see: https://pytorch.org/docs/stable/elastic/errors.html ------------------------------------------------------------ Root Cause (first observed failure): [0]: time : 2026-03-11_04:06:54 host : ab6fe09eaab5 rank : 0 (local_rank: 0) exitcode : 2 (pid: 2463) error_file: traceback : To enable traceback see: https://pytorch.org/docs/stable/elastic/errors.html ============================================================ >>> Training finished with exit code 1 Ended: 2026-03-11 04:06:55 UTC >>> Saving training log to HuggingFace...