From 9b7d307b8cc9d88310fe0c0548e4a0fb094f45d3 Mon Sep 17 00:00:00 2001
From: Tim Dettmers <dettmers@cs.washington.edu>
Date: Tue, 20 Sep 2022 06:36:32 +0300
Subject: review
---
bitsandbytes/autograd/_functions.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'bitsandbytes/autograd')
diff --git a/bitsandbytes/autograd/_functions.py b/bitsandbytes/autograd/_functions.py
index 9928fbd..2ddb406 100644
--- a/bitsandbytes/autograd/_functions.py
+++ b/bitsandbytes/autograd/_functions.py
@@ -381,7 +381,7 @@ class MatMul8bitLt(torch.autograd.Function):
grad_A = F.mm_dequant(gradA32, SgradA32, SCgrad, state.SCBt).view(ctx.grad_shape).to(ctx.dtype_A)
elif state.CB is not None:
- CB = state.CB.to(ctx.dtype_A, copy=True).mul_(state.SCB.unsqueeze(1).div(127.0))
+ CB = state.CB.to(ctx.dtype_A, copy=True).mul_(state.SCB.unsqueeze(1).mul(1. / 127.0))
grad_A = torch.matmul(grad_output, CB).view(ctx.grad_shape).to(ctx.dtype_A)
else:
raise Exception('State must contain either CBt or CB matrix for backward')
--
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