coder.checkGpuInstall: Basic Code Generation : FAILED (GPU code generation failed with an error

Hi,

I am trying to use the GPU coder to compile a MATLAB function of gpuArrays into a .mex file, but I keep getting the error "Basic Code Generation : FAILED (GPU code generation failed with an error" when i test the coder.checkGpuInstall. Here is my setup:

• MATLAB R2024b - academic use;
• Visual Studio 2022 17.8 (Enterprise) as C/C++ compiler;
• CUDA toolkit 12.2

Some related test commands and results are as follows

gpuDevice

  CUDADevice - :

                 Name: 'Tesla V100-SXM2-32GB'
                Index: 1/8
    ComputeCapability: '7.0'
          DriverModel: 'TCC'
          TotalMemory: 34218311680 (34.22 GB)
      AvailableMemory: 33668726784 (33.67 GB)
      DeviceAvailable: true
       DeviceSelected: true

coder.checkGpuInstall
Compatible GPU           : PASSED 
CUDA Environment         : PASSED 
	Runtime   : PASSED 
	cuFFT     : PASSED 
	cuSOLVER  : PASSED 
	cuBLAS    : PASSED 
cuDNN Environment        : PASSED 
Host Compiler            : PASSED 
Basic Code Generation    : FAILED (GPU code generation failed with an error. View report for further information: View report)
ans = 
struct:

                 gpu: 1
                cuda: 1
               cudnn: 1
            tensorrt: 0
        hostcompiler: 1
        basiccodegen: 0
       basiccodeexec: 0
         deepcodegen: 0
    tensorrtdatatype: 0
        deepcodeexec: 0

mex -setup
MEX is configured to use 'Microsoft Visual C++ 2022 (C)' for C compilation.

mex -setup C++ 
MEX is configured to use 'Microsoft Visual C++ 2022' for C++ language compilation.

when I click the View report, it seems a C++ compiler error happens when compiling the gpuSimpleTest fcn， I cannot figure out what is the issue (see below for the build log)

[1/10] cl /c /Zc:__cplusplus /Zp8 /GR /W3 /EHs /nologo /MD /D_CRT_SECURE_NO_DEPRECATE /D_SCL_SECURE_NO_DEPRECATE /D_SECURE_SCL=0   /DMATLAB_MEX_FILE  /DMATLAB_MEX_FILE /O2 /Oy- /DNDEBUG /fp:strict /utf-8 /I "." /I "C:\Users\admin\AppData\Local\Temp\tp23b343d4_825a_4aa8_ad85_d5999890735a" /I "D:\Program Files\Matlab\toolbox\gpucoder\src\gpucoderrt\export\include\gpucoderrt" /I "D:\Program Files\Matlab\sys\cuda\win64\cuda\include" /I ".\interface" /I "D:\Program Files\Matlab\extern\include" /I "." -DMW_CUDA_ARCH=700 -DMW_GPU_MEMORY_DEBUG -DMW_GPU_MEMORY_MANAGER -DMODEL=gpuSimpleTest_mex -DMW_NEEDS_VERSION_H   interface\_coder_gpuSimpleTest_info.cpp /Fobuild\win64\_coder_gpuSimpleTest_info.obj
FAILED: build/win64/_coder_gpuSimpleTest_info.obj 
cl /c /Zc:__cplusplus /Zp8 /GR /W3 /EHs /nologo /MD /D_CRT_SECURE_NO_DEPRECATE /D_SCL_SECURE_NO_DEPRECATE /D_SECURE_SCL=0   /DMATLAB_MEX_FILE  /DMATLAB_MEX_FILE /O2 /Oy- /DNDEBUG /fp:strict /utf-8 /I "." /I "C:\Users\admin\AppData\Local\Temp\tp23b343d4_825a_4aa8_ad85_d5999890735a" /I "D:\Program Files\Matlab\toolbox\gpucoder\src\gpucoderrt\export\include\gpucoderrt" /I "D:\Program Files\Matlab\sys\cuda\win64\cuda\include" /I ".\interface" /I "D:\Program Files\Matlab\extern\include" /I "." -DMW_CUDA_ARCH=700 -DMW_GPU_MEMORY_DEBUG -DMW_GPU_MEMORY_MANAGER -DMODEL=gpuSimpleTest_mex -DMW_NEEDS_VERSION_H   interface\_coder_gpuSimpleTest_info.cpp /Fobuild\win64\_coder_gpuSimpleTest_info.obj
CreateProcess failed: The system cannot find the file specified.

Thanks for any suggestion！

[Chao Luo]

It seems that MATLAB cannot find cl.exe of Visual Studio.

Can you try a simple GPU mex codegen and check how the visual studio is setup?

cfg = coder.gpuConfig('mex');
codegen -config cfg -args {1} foo
function output = foo(input)
  output = input * 2;
end

You can find the setup file SetEnv.bat in codegen\mex\foo. On my side, the file contains such line;

set PATH=C:\Program Files\Microsoft Visual Studio\2022\Professional\VC\Tools\MSVC\14.39.33519\bin\HostX64\x64\

Can you check if there is such folder, like C:\Program Files\Microsoft Visual Studio\2022\Professional\VC\Tools\MSVC\14.39.33519\bin\HostX64\x64\, and there is a cl.exe in the folder?

[Justin Hontz]

Hi Shi,

Based on the diagnostic, it appears that the ninja build system is unable to locate the MSVC compiler. Do you run into the same issue if you try generating a MEX with MATLAB Coder (without using GPU Coder)?

It is possible that the issue may be caused by an out-of-date MEX configuration. One thing you can try is locate your preferences directory (by running prefdir in MATLAB) and find files mex_C++_win64.xml and mex_C_win64.xml within. Then delete these files, re-run the MEX setup commands, and try code generation again.

[Shi]

The problem was solved! Thanks for all your answers!!!

By running the code provided by Chao Luo, I found that the path in SetEnv.bat pointed to the VS version I had uninstalled. However, the problem was not solved after I reset the environment variables and restarted MATLAB. Then I used the method provided by Justin Hontz, deleted the corresponding files and re-run the mex setup command, and then coder.checkGpuInstall passed! I guess that the C/C++ compiler path recognized by Matlab should be updated by regenerating the files mex_C++_win64.xml and mex_C_win64.xml.