[ONNX] Add MatMul for FBC/BC #3657
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andrey-churkin
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Oct 15, 2025
| op_names = ["MatMul"] | ||
| hw_config_names = [HWConfigOpName.MATMUL] | ||
| weight_channel_axis = -1 # For port_id=1 | ||
| bias_port_id = 2 |
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This does not apply to the MatMul ONNX operation, as it does not accept a bias input. Reference: https://onnx.ai/onnx/operators/onnx__MatMul.html
andrey-churkin
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Oct 15, 2025
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| if bias_value.ndim > 1: | ||
| # Make index positive | ||
| output_channel_axis = range(bias_value.ndim)[output_channel_axis] | ||
| input_channel_axis = range(bias_value.ndim)[input_channel_axis] |
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It was moved into create_input_data() because this method does not work properly with a negative channel_axis. The output_channel_axis is converted to positive inside mean_per_channel() method.
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Changes
Add support for the
MatMuloperation in the Fast Bias/Bias Correction algorithm.Reason for changes
The Fast Bias/Bias Correction algorithm is not applied to the
MatMul->Addsubgraph in which one of the inputs to the Add operation is a constant. In this case, theMatMuloperation is not considered as having a bias, so the algorithm is not applied.Related tickets
Ref: 135433
Tests