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simplify accelerate main process detection

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This commit is contained in:
Pepijn
2025-10-14 13:38:36 +02:00
parent 50ff388bf6
commit cabc47c5ad
1 changed files with 5 additions and 14 deletions
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src/lerobot/scripts/lerobot_train.py
+5 -14
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@@ -163,24 +163,15 @@ def train(cfg: TrainPipelineConfig, accelerator: Callable | None = None):
""" """
cfg.validate() cfg.validate()
# Check if this is the main process # Determine if this is the main process (for logging and checkpointing)
# Use LOCAL_RANK environment variable (set by accelerate) for reliable detection # When using accelerate, only the main process should log to avoid duplicate outputs
local_rank = int(os.environ.get("LOCAL_RANK", -1)) is_main_process = accelerator.is_main_process if accelerator else True
if local_rank == -1:
# No LOCAL_RANK, check accelerator object or assume main process
is_main_process = not accelerator or (hasattr(accelerator, 'is_main_process') and accelerator.is_main_process)
else:
# LOCAL_RANK is set, main process is rank 0
is_main_process = local_rank == 0
if accelerator and not is_main_process:
# Disable WandB and logging on non-main processes.
cfg.wandb.enable = False
# Only log on main process
if is_main_process: if is_main_process:
logging.info(pformat(cfg.to_dict())) logging.info(pformat(cfg.to_dict()))
# Only create WandB logger on main process # Initialize wandb only on main process
if cfg.wandb.enable and cfg.wandb.project and is_main_process: if cfg.wandb.enable and cfg.wandb.project and is_main_process:
wandb_logger = WandBLogger(cfg) wandb_logger = WandBLogger(cfg)
else: else: