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fix: cast aq score to float64 to avoid overflow #1126

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fix: cast aq score to float64 to avoid overflow #1126

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3 changes: 2 additions & 1 deletion modelopt/torch/quantization/algorithms.py
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Original file line number Diff line number Diff line change
Expand Up @@ -763,7 +763,8 @@ def run_search(self):


def _get_auto_quantize_score(grad_output, output_diff):
return ((grad_output.float() ** 2) * (output_diff.float() ** 2)).sum()
x = grad_output.float() * output_diff.float()
return x.to(torch.float64).square().sum()


def _add_auto_quantize_score(grad_output, output_diff, score_tensor):
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