Add default value to 'high_precision_tensors'

Signed-off-by: gcunhase <[email protected]>

Author: gcunhase

modelopt/onnx/autocast/precisionconverter.py

@@ -472,7 +472,7 @@ def _filter_unsupported_op_types(
     def _get_tensors_to_cast(
         self,
         low_precision_nodes: list[str],
-        high_precision_tensors: dict[str, dict[str, list[int]]],
+        high_precision_tensors: dict[str, dict[str, list[int]]] = {},
     ) -> tuple[list[str], list[str], dict[str, list[onnx.NodeProto]]]:
         cast_to_fp16 = []  # Tensors to cast down to FP16
         cast_to_fp32 = []  # Tensors to cast up to FP32