ONNX export yields Error !

Question

hamed bastami 2019-12-2

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/494277-onnx-export-yields-error

评论： Adrià López Escoriza 2021-4-30

采纳的回答： Jon Cherrie

Dear MathWorks Deep Learning Toolbox Team:

Hi, I tried to use exportONNXNetwork, I ran this part of code, but i saw this error, could you help me pls?!

Usage example:

%% Export to ONNX model format

net = squeezenet;

filename = 'squeezenet.onnx';

exportONNXNetwork(net,filename);

-------------------------------------

this error appear:

Error using nnet.internal.cnn.onnx.onnxmex

Invalid MEX-file

'C:\ProgramData\MATLAB\SupportPackages\R2019b\toolbox\nnet\supportpackages\onnx\+nnet\+internal\+cnn\+onnx\onnxmex.mexw64':

A dynamic link library (DLL) initialization routine failed.

Error in nnet.internal.cnn.onnx.ModelProto/writeToFile (line 50)

ModelPtr = onnxmex(int32(FuncName.EnewModelProto));

Error in nnet.internal.cnn.onnx.exportONNXNetwork (line 37)

writeToFile(modelProto, Filename);

Error in exportONNXNetwork (line 40)

nnet.internal.cnn.onnx.exportONNXNetwork(Network, filename, varargin{:});

Error in Untitled (line 5)

exportONNXNetwork(net,filename)

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David 2021-4-3

On Mac OS using Matlab 2021a I get:

>> exportONNXNetwork(trainedNetwork_1,'ONNXThumbs.onnx')

Error using nnet.internal.cnn.onnx.onnxmex

Unexpected Standard exception from MEX file.

What() is:Failed to load ONNX Shared library.

..

Error in nnet.internal.cnn.onnx.ModelProto/writeToFile (line 52)

ModelPtr = onnxmex(int32(FuncName.EnewModelProto));

Error in nnet.internal.cnn.onnx.exportONNXNetwork (line 38)

writeToFile(modelProto, Filename);

Error in exportONNXNetwork (line 38)

nnet.internal.cnn.onnx.exportONNXNetwork(Network, filename, varargin{:});

Adrià López Escoriza 2021-4-30

Same, the bug report does not seem solve the issue in MacOS

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Answer 1

Jon Cherrie 2021-4-4

3
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/494277-onnx-export-yields-error#answer_666502

It looks like you are hitting this bug:

Error when using functions for importing or converting ONNX or Caffe models on Windows
https://www.mathworks.com/support/bugreports/2465087

There is a workaround listed in that bug report.

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Answer 2

Neelanjana Pal 2020-2-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/494277-onnx-export-yields-error#answer_415313

I also got the same issue but restarting the system solved my problem

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Ting Su 2021-3-15

The cause of R2021a is that the bin folder created under C:\ProgramData\MATLAB\SupportPackages\R2021a\bin\win64\ is not recognized as a system path.

The following command should help.

mv C:\ProgramData\MATLAB\SupportPackages\R2021a\bin\win64\onnxpb.dll C:\ProgramData\MATLAB\SupportPackages\R2021a\toolbox\nnet\supportpackages\onnx\+nnet\+internal\+cnn\+onnx\

cui,xingxing 2021-3-16

@Ting SuAfter copying onnxpb.dll, it can work now, thank you very much!

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