From a9fe0ff98c3293d972eb7a638b9887df0bc0d30d Mon Sep 17 00:00:00 2001
From: justheuristic <justheuristic@gmail.com>
Date: Sat, 17 Sep 2022 23:34:22 +0300
Subject: recast to fp16

---
 bitsandbytes/autograd/_functions.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bitsandbytes/autograd/_functions.py b/bitsandbytes/autograd/_functions.py
index f4a6d57..dc79bb1 100644
--- a/bitsandbytes/autograd/_functions.py
+++ b/bitsandbytes/autograd/_functions.py
@@ -275,7 +275,7 @@ class MatMul8bitLt(torch.autograd.Function):
                     state.SCB,
                     state.SCBt,
                     coo_tensorB,
-                ) = F.double_quant(B)
+                ) = F.double_quant(B.to(torch.float16))
                 state.CxB, state.SB = F.transform(CB, to_order=formatB)
         else:
             has_grad = False
-- 
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