mirror of https://github.com/hpcaitech/ColossalAI
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33 lines
713 B
33 lines
713 B
from contextlib import contextmanager
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import torch
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import torch.nn as nn
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@contextmanager
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def low_precision_init(target_dtype: torch.dtype = torch.float16):
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dtype = torch.get_default_dtype()
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try:
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torch.set_default_dtype(target_dtype)
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yield
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finally:
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torch.set_default_dtype(dtype)
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def get_model_numel(model: nn.Module) -> int:
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return sum(p.numel() for p in model.parameters())
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def format_numel_str(numel: int) -> str:
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B = 1024**3
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M = 1024**2
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K = 1024
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if numel >= B:
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return f"{numel / B:.2f} B"
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elif numel >= M:
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return f"{numel / M:.2f} M"
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elif numel >= K:
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return f"{numel / K:.2f} K"
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else:
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return f"{numel}"
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