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Update utils.py

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This commit is contained in:
Daniel Han-Chen 2024-02-03 03:10:39 +11:00
commit fa3d23406e
1 changed files with 5 additions and 12 deletions
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17
unsloth/kernels/utils.py
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@ -203,23 +203,16 @@ def fast_linear_forward(proj, X, temp_lora = None, out = None):
# Add in LoRA weights
if lora_A is not None:
dtype = X.dtype
if not hasattr(lora_A, "_fast_lora"):
lora_A._fast_lora = lora_A.to(dtype)
lora_B._fast_lora = lora_B.to(dtype)
pass
lora_A = lora_A._fast_lora
lora_B = lora_B._fast_lora
out_dim = out.shape[2]
dtype = X.dtype
if bsz == 1:
out = out.view(out_dim)
temp_lora = torch.mv(lora_A, X.ravel(), out = temp_lora)
out.addmv_(lora_B, temp_lora, alpha = lora_S)
temp_lora = torch.mv(lora_A.to(dtype), X.ravel(), out = temp_lora)
out.addmv_(lora_B.to(dtype), temp_lora, alpha = lora_S)
else:
out = out.view(bsz, out_dim)
temp_lora = torch.mm(X.view(bsz, in_dim), lora_A.t(), out = temp_lora)
out.addmm_(temp_lora, lora_B.t(), alpha = lora_S)
temp_lora = torch.mm(X.view(bsz, in_dim), lora_A.to(dtype).t(), out = temp_lora)
out.addmm_(temp_lora, lora_B.to(dtype).t(), alpha = lora_S)
pass
out = out.view(bsz, 1, out_dim)
pass