mirror of https://github.com/hpcaitech/ColossalAI
20 lines
673 B
Python
20 lines
673 B
Python
import torch
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import torch.distributed as dist
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def check_equal(A, B):
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assert torch.allclose(A, B, rtol=1e-3, atol=1e-1) == True
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def replace_parameter_add_grad(layer, weight=None, bias=None):
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if weight is not None:
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delattr(layer, 'weight')
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setattr(layer, 'weight', weight)
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layer.weight.requires_grad = True
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if bias is not None:
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delattr(layer, 'bias')
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setattr(layer, 'bias', bias)
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layer.bias.requires_grad = True
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def broadcast_tensor_chunk(tensor, chunk_size=1, local_rank=0):
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dist.broadcast(tensor, src=0)
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tensor_chunk = torch.chunk(tensor, chunk_size, dim=-1)[local_rank]
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return tensor_chunk.clone() |