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fix bug (#796)

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Yuekai Zhang 2022-12-28 11:20:38 +08:00 committed by GitHub
parent 05dfd5e630
commit 3c54333b06
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1 changed files with 25 additions and 13 deletions
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38
egs/wenetspeech/ASR/pruned_transducer_stateless5/conformer.py
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@ -966,20 +966,32 @@ class RelPositionMultiheadAttention(nn.Module):
(batch_size, num_heads, time1, n) = x.shape (batch_size, num_heads, time1, n) = x.shape
time2 = time1 + left_context time2 = time1 + left_context
assert ( if not torch.jit.is_tracing():
n == left_context + 2 * time1 - 1 assert (
), f"{n} == {left_context} + 2 * {time1} - 1" n == left_context + 2 * time1 - 1
), f"{n} == {left_context} + 2 * {time1} - 1"
# Note: TorchScript requires explicit arg for stride() if torch.jit.is_tracing():
batch_stride = x.stride(0) rows = torch.arange(start=time1 - 1, end=-1, step=-1)
head_stride = x.stride(1) cols = torch.arange(time2)
time1_stride = x.stride(2) rows = rows.repeat(batch_size * num_heads).unsqueeze(-1)
n_stride = x.stride(3) indexes = rows + cols
return x.as_strided(
(batch_size, num_heads, time1, time2), x = x.reshape(-1, n)
(batch_stride, head_stride, time1_stride - n_stride, n_stride), x = torch.gather(x, dim=1, index=indexes)
storage_offset=n_stride * (time1 - 1), x = x.reshape(batch_size, num_heads, time1, time2)
) return x
else:
# Note: TorchScript requires explicit arg for stride()
batch_stride = x.stride(0)
head_stride = x.stride(1)
time1_stride = x.stride(2)
n_stride = x.stride(3)
return x.as_strided(
(batch_size, num_heads, time1, time2),
(batch_stride, head_stride, time1_stride - n_stride, n_stride),
storage_offset=n_stride * (time1 - 1),
)
def multi_head_attention_forward( def multi_head_attention_forward(
self, self,