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Update gemma.py

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Daniel Han-Chen 2024-02-26 04:23:38 +11:00
commit 40169f9fd3
1 changed files with 12 additions and 0 deletions
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unsloth/models/gemma.py
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@ -97,6 +97,18 @@ class FastGemmaRotaryEmbedding(torch.nn.Module):
self.cos_cached = emb.cos().to(dtype=x.dtype)
self.sin_cached = emb.sin().to(dtype=x.dtype)
pass
position_ids = torch.arange(self.max_position_embeddings, device=x.device, dtype=torch.int64).unsqueeze(0)
inv_freq_expanded = self.inv_freq[None, :, None].float().expand(1, -1, 1)
position_ids_expanded = position_ids[:, None, :].float()
freqs = (inv_freq_expanded @ position_ids_expanded).transpose(1, 2)
emb = torch.cat((freqs, freqs), dim=-1)
cos_cached = emb.cos().to(dtype=x.dtype)
sin_cached = emb.sin().to(dtype=x.dtype)
print(cos_cached)
print(self.cos_cached)
# return self.cos_cached[:,:length], self.sin_cached[:,:length]
return self.cos_cached, self.sin_cached
pass