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fix: lower num_workers to 4 #4535

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Jan 7, 2025
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fix: lower num_workers to 4 #4535

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c7435a8
fix: lower `num_workers` to 4
caic99 Jan 6, 2025
3fdf2b7
update docs
caic99 Jan 6, 2025
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2 changes: 1 addition & 1 deletion deepmd/pt/utils/env.py
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Expand Up @@ -21,7 +21,7 @@
ncpus = len(os.sched_getaffinity(0))
except AttributeError:
ncpus = os.cpu_count()
NUM_WORKERS = int(os.environ.get("NUM_WORKERS", min(8, ncpus)))
NUM_WORKERS = int(os.environ.get("NUM_WORKERS", min(4, ncpus)))
# Make sure DDP uses correct device if applicable
LOCAL_RANK = os.environ.get("LOCAL_RANK")
LOCAL_RANK = int(0 if LOCAL_RANK is None else LOCAL_RANK)
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2 changes: 1 addition & 1 deletion doc/env.md
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Expand Up @@ -72,7 +72,7 @@ Default backend.

:::{envvar} NUM_WORKERS

**Default**: 8 or the number of cores (whichever is smaller)
**Default**: 4 or the number of cores (whichever is smaller)

{{ pytorch_icon }} Number of subprocesses to use for data loading in the PyTorch backend.
See [PyTorch documentation](https://pytorch.org/docs/stable/data.html) for details.
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