Compiling CUDA files with mexcuda in matlab2021b report error

I am trying to compile cuda files into mex(matlab 2021b)

mexcuda mexGPUExample.cu  

The error occurs:

warning: The selected C++ compiler is not supported for CUDA compilation. Searching for a supported compiler. 
> 位置：mexcuda (第 96 行) 
错误使用 mex
未检测到支持的编译器。有关选项，请访问 https://www.mathworks.com/support/compilers。

出错 mexcuda (第 168 行)
    [varargout{1:nargout}] = mex(mexArguments{:});

However , when I type:

 mex -setup
 

I have tested the MinGW64 Compiler and it work properly

 MEX Configured to use 'MinGW64 Compiler (C)' for C compilation.
 
要选择不同的语言，请从以下选项中选择一种命令:
 mex -setup C++ 
 mex -setup FORTRAN

here are my gpu configurations:

                       Name: 'NVIDIA GeForce RTX 3090'
                     Index: 1
         ComputeCapability: '8.6'
            SupportsDouble: 1
             DriverVersion: 11.6000
            ToolkitVersion: 11
        MaxThreadsPerBlock: 1024
          MaxShmemPerBlock: 49152
        MaxThreadBlockSize: [1024 1024 64]
               MaxGridSize: [2.1475e+09 65535 65535]
                 SIMDWidth: 32
               TotalMemory: 2.5769e+10
           AvailableMemory: 2.4283e+10
       MultiprocessorCount: 82
              ClockRateKHz: 1695000
               ComputeMode: 'Default'
      GPUOverlapsTransfers: 1
    KernelExecutionTimeout: 1
          CanMapHostMemory: 1
           DeviceSupported: 1
           DeviceAvailable: 1
            DeviceSelected: 1

Answer 1

[Walter Roberson]

Look at https://www.mathworks.com/content/dam/mathworks/mathworks-dot-com/support/sysreq/files/system-requirements-release-2021b-supported-compilers.pdf

In the column for GPU Coder, notice that MinGW is not supported. You need VS 2019 or VS 2017

[zhou caiwei]

I turned my compiler from mingw64 to visual studio 2019, and it compiled successfully. But a warning jumped out:

mexcuda mexGPUExample.cu

warning: The selected C++ compiler is not supported for CUDA compilation. Searching for a supported compiler. 
> 位置：mexcuda (第 96 行) 
使用 'NVIDIA CUDA Compiler' 编译。
MEX successed

the compiled result passed the numerical test successfully.

what does the warning means? would it affect my result?

。

[Joss Knight]

Did you change the default compiler to VS using mex -setup?

[zhou caiwei]

Yes I did

[Joss Knight]

Can you run again with the -v option and post the output?