diff options
| -rw-r--r-- | bitsandbytes/autograd/_functions.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/bitsandbytes/autograd/_functions.py b/bitsandbytes/autograd/_functions.py index bdcbec5..6d473e9 100644 --- a/bitsandbytes/autograd/_functions.py +++ b/bitsandbytes/autograd/_functions.py @@ -1,4 +1,6 @@ import operator +import warnings + import torch import bitsandbytes.functional as F @@ -229,6 +231,8 @@ class MatMul8bitLt(torch.autograd.Function): # Cast A to fp16 A_dtype = A.dtype + if A_dtype != torch.float16: + warnings.warn(f"MatMul8bitLt: temporarily casting input matrix from {A_dtype} to float16") A = A.to(torch.float16) # 1. Quantize A |