47 lines
1.6 KiB
Python
47 lines
1.6 KiB
Python
import torch
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from contextlib import contextmanager
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class Linear(torch.nn.Module):
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def __init__(self, in_features: int, out_features: int, bias: bool = True,
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device=None, dtype=None) -> None:
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factory_kwargs = {'device': device, 'dtype': dtype}
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super().__init__()
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self.in_features = in_features
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self.out_features = out_features
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self.weight = torch.nn.Parameter(torch.empty((out_features, in_features), **factory_kwargs))
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if bias:
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self.bias = torch.nn.Parameter(torch.empty(out_features, **factory_kwargs))
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else:
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self.register_parameter('bias', None)
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def forward(self, input):
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return torch.nn.functional.linear(input, self.weight, self.bias)
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class Conv2d(torch.nn.Conv2d):
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def reset_parameters(self):
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return None
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def conv_nd(dims, *args, **kwargs):
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if dims == 2:
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return Conv2d(*args, **kwargs)
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else:
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raise ValueError(f"unsupported dimensions: {dims}")
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@contextmanager
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def use_comfy_ops(device=None, dtype=None): # Kind of an ugly hack but I can't think of a better way
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old_torch_nn_linear = torch.nn.Linear
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force_device = device
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force_dtype = dtype
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def linear_with_dtype(in_features: int, out_features: int, bias: bool = True, device=None, dtype=None):
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if force_device is not None:
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device = force_device
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if force_dtype is not None:
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dtype = force_dtype
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return Linear(in_features, out_features, bias=bias, device=device, dtype=dtype)
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torch.nn.Linear = linear_with_dtype
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try:
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yield
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finally:
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torch.nn.Linear = old_torch_nn_linear
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