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Assert correct device when dequantizing (like we do for quantizing) #90

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merged 2 commits into from
Jun 19, 2024
Merged

Assert correct device when dequantizing (like we do for quantizing) #90

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d4d6de2
Update forward.py
dbogunowicz Jun 18, 2024
752165a
Update forward.py
dbogunowicz Jun 18, 2024
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8 changes: 8 additions & 0 deletions src/compressed_tensors/quantization/lifecycle/forward.py
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Original file line number Diff line number Diff line change
Expand Up @@ -93,6 +93,14 @@ def dequantize(
:param args: quantization args used to quantize x_q
:return: dequantized float tensor
"""
# ensure all tensors are on the same device
# assumes that the target device is the input
# tensor's device
if x_q.device != scale.device:
scale = scale.to(x_q.device)
if x_q.device != zero_point.device:
zero_point = zero_point.to(x_q.device)

if args is None:
if scale.ndim == 0 or scale.ndim == 1:
args = QuantizationArgs(strategy=QuantizationStrategy.TENSOR)
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