[Bug] Fix error 'Dynamo failed to run FX node with fake tensors for Deepseek V3.2 (#31046)

Signed-off-by: yewentao256 <zhyanwentao@126.com>
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Wentao Ye 2025-12-19 18:31:31 -05:00 committed by GitHub
parent 83a317f650
commit 4cf9429897
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@ -878,8 +878,11 @@ class Indexer(nn.Module):
)
q_pe, k_pe = rotary_emb(positions, q_pe, k_pe.unsqueeze(1))
q = torch.cat([q_pe.squeeze(0), q_nope], dim=-1)
k = torch.cat([k_pe.squeeze((0, 2)), k_nope], dim=-1)
# `rotary_emb` is shape-preserving; `q_pe` is already
# [num_tokens, n_head, rope_dim].
q = torch.cat([q_pe, q_nope], dim=-1)
# `k_pe` is [num_tokens, 1, rope_dim] (MQA).
k = torch.cat([k_pe.squeeze(1), k_nope], dim=-1)
# we only quant q here since k quant is fused with cache insertion
q = q.view(-1, self.head_dim)