Why do I get the error "Invalid Path" when simulating a GPU accelerated model?

I am following the instructions on the following page to create a GPU-accelerated model:

https://www.mathworks.com/help/gpucoder/ug/simulation-acceleration-using-gpu-coder.html

When I try to simulate the model, I get the following error message:

Making simulation target "edgeDetection_sfun", ...

### Linking ... "C:\Program Files\MATLAB\R2020b\bin\win64\mex.exe"

-R2018a -f

"C:\Users\User\AppData\Roaming\MathWorks\MATLAB\R2020b\mex_C++_win64.xml"

-silent LDFLAGS="$LDFLAGS -Xlinker " " " -output

edgeDetection_sfun.mexw64 @edgeDetection_sfun.mol

Invalid path

gmake: *** [edgeDetection_sfun.mexw64] Error -1

Component:Make | Category:Make error

Unable to create mex function 'edgeDetection_sfun.mexw64' required for

simulation.

Component:Simulink | Category:Model error

Answer 1

[MathWorks Support Team]

It looks you might be using the MinGW compiler. GPU Coder currently supports only Microsoft Visual C++ 2015, 2017, and 2019, as indicated on the following Documentation page:

https://www.mathworks.com/support/requirements/supported-compilers.html

You can check which C++ compiler is selected by using the 'mex' command. Please run the following command in the MATLAB command window:

>> mex -setup -lang c++

If MinGW is selected, then you should be able to click on an appropriate link in the command window to select Visual Studio instead (assuming Visual Studio is installed on your machine).