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Cherry pick "Adds dst.dtype information in copy_ method of quantized tensors. #2120" #2673

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Cherry pick "Adds dst.dtype information in copy_ method of quantized tensors. #2120" #2673

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2d315e6
Adds dst.dtype information in copy_ method of quantized tensors.
zobeideThePlayer Aug 26, 2025
f06db0d
Update transformer_engine/pytorch/tensor/quantized_tensor.py
zobeideThePlayer Aug 28, 2025
9a51ff4
Merge branch 'main' into fix_quantized_tensor_copy_bug
zobeideThePlayer Aug 28, 2025
2feddee
Merge branch 'main' into fix_quantized_tensor_copy_bug
zobeideThePlayer Aug 30, 2025
b3c920c
Merge branch 'main' into fix_quantized_tensor_copy_bug
zobeideThePlayer Sep 19, 2025
a6a9cac
Merge branch 'main' into fix_quantized_tensor_copy_bug
zobeideThePlayer Oct 16, 2025
b3a1308
Merge branch 'main' into fix_quantized_tensor_copy_bug
ptrendx Feb 11, 2026
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5 changes: 4 additions & 1 deletion transformer_engine/pytorch/quantized_tensor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -466,7 +466,10 @@ def __torch_dispatch__(cls, func, types, args, kwargs=None):
dst.quantize_(src)
else:
if isinstance(src, QuantizedTensor):
src = src.dequantize()
dtype = dst.dtype
if dtype not in (torch.float32, torch.float16, torch.bfloat16):
dtype = torch.float32
src = src.dequantize(dtype=dtype)
dst.copy_(src)
return None

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