luyaor opened a new issue #7263: URL: https://github.com/apache/tvm/issues/7263
## Description When compiling following model with TVM, it will error on parsing. I think it is because matrix C for inputs could be optional by ONNX specification. Check here: https://github.com/onnx/onnx/blob/master/docs/Operators.md#gemm The model(with ONNX as frontend) with error is as follows, check bug.onnx in [bug7.zip](https://github.com/apache/tvm/files/5802949/bug7.zip). ## Error Log ``` Traceback (most recent call last): File "check.py", line 11, in <module> mod, params = relay.frontend.from_onnx(onnx_model, {}) File "/Users/luyaor/Documents/tvm/python/tvm/relay/frontend/onnx.py", line 2806, in from_onnx mod, params = g.from_onnx(graph, opset, freeze_params) File "/Users/luyaor/Documents/tvm/python/tvm/relay/frontend/onnx.py", line 2613, in from_onnx op = self._convert_operator(op_name, inputs, attr, opset) File "/Users/luyaor/Documents/tvm/python/tvm/relay/frontend/onnx.py", line 2721, in _convert_operator sym = convert_map[op_name](inputs, attrs, self._params) File "/Users/luyaor/Documents/tvm/python/tvm/relay/frontend/onnx.py", line 510, in _impl_v1 assert len(inputs) == 3, "Gemm op take 3 inputs, {} given".format(len(inputs)) AssertionError: Gemm op take 3 inputs, 2 given ``` ## How to reproduce ### Environment Python3, with tvm, onnx tvm version: [`c31e338`](https://github.com/apache/tvm/commit/c31e338d5f98a8e8c97286c5b93b20caee8be602) Wed Dec 9 14:52:58 2020 +0900 1. Download [bug7.zip](https://github.com/apache/tvm/files/5802949/bug7.zip) 2. Run `python check.py`. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
