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Commit 1145589f authored by justheuristic's avatar justheuristic
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change typecast behavior

parent d6e25b5f
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bitsandbytes/autograd/_functions.py
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...@@ -328,7 +328,6 @@ class MatMul8bitLt(torch.autograd.Function): ...@@ -328,7 +328,6 @@ class MatMul8bitLt(torch.autograd.Function):
ctx.formatB = formatB ctx.formatB = formatB
ctx.grad_shape = input_shape ctx.grad_shape = input_shape
ctx.req_grads = [requires_gradA, requires_gradB, requires_gradBias]
ctx.dtype_A, ctx.dtype_B, ctx.dtype_bias = A.dtype, B.dtype, None if bias is None else bias.dtype ctx.dtype_A, ctx.dtype_B, ctx.dtype_bias = A.dtype, B.dtype, None if bias is None else bias.dtype
if requires_gradA or requires_gradB: if requires_gradA or requires_gradB:
...@@ -357,7 +356,7 @@ class MatMul8bitLt(torch.autograd.Function): ...@@ -357,7 +356,7 @@ class MatMul8bitLt(torch.autograd.Function):
if req_gradBias: if req_gradBias:
# compute grad_bias first before changing grad_output dtype # compute grad_bias first before changing grad_output dtype
grad_bias = grad_output.sum(0).to(ctx.bias_dtype) grad_bias = grad_output.sum(0).to(ctx.dtype_bias)
# Cast grad_output to fp16 # Cast grad_output to fp16
if len(grad_output.shape) == 3: if len(grad_output.shape) == 3:
......
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