GPU not recognized (r2020a and cuda 10.2)

Hi there,

Recently have a new PC with a titan xp with cuda 10.2 installed and matlab 2019b. I've done stress tests etc, and the GPU is recognized by the PC (GPUZ and in the task manager). Also ran nvidia-smi.exe (screenshot attached) with all the details. From what I've read the insufficient permissions line is not relevant to matlab seeing the GPU or not.

Matlab still doesn't see the GPU, any idea why? Should I use CUDA 10.1? From what I understand 10.2 should still have all the drivers needed from 10.1 so not sure if that would fix it. I can't currently install 2020a due to licensing access but if that would be the solution I can try and figure it out.

Many thanks for any help!

[Jason Ross]

When you say "MATLAB doesn't see the GPU", what exactly do you mean? gpuDevice doesn't work? gpuArrays don't work?

In your nvidia-smi output, I can see MATLAB R2019b as a process.

[Ben Mc Larney]

Hi Jason, thanks for the quick response. Just noticed that as well, however when I run gpuDevice in Matlab I get this error :

Error using gpuDevice (line 26)

Invalid function name '_gpu_isAnyDeviceSelected'.

and also

gpuDeviceCount

ans =

0

Could it be a toolbox problem? Here's a list of the list of current ones installed:

MATLAB Version 9.7 (R2019b)

Bioinformatics Toolbox Version 4.13 (R2019b)

Computer Vision Toolbox Version 9.1 (R2019b)

Curve Fitting Toolbox Version 3.5.10 (R2019b)

Deep Learning Toolbox Version 13.0 (R2019b)

Fuzzy Logic Toolbox Version 2.6 (R2019b)

Image Processing Toolbox Version 11.0 (R2019b)

Optimization Toolbox Version 8.4 (R2019b)

Parallel Computing Toolbox Version 7.1 (R2019b)

Partial Differential Equation Toolbox Version 3.3 (R2019b)

Signal Processing Toolbox Version 8.3 (R2019b)

Statistics and Machine Learning Toolbox Version 11.6 (R2019b)

Thanks,

Ben

[Alison Eele]

Inside MATLAB could you run:

cd ([matlabroot '/bin/win64'])
!CertUtil -hashfile gpushim.dll SHA1

And let us know the output please. There might be something a little off in your MATLAB installation.

[Ben Mc Larney]

Hi Alison,

Looks like you could be right. Here's the output from that code:

cd ([matlabroot '/bin/win64'])
!CertUtil -hashfile gpushim.dll SHA1
CertUtil: -hashfile command FAILED: 0x80070002 (WIN32: 2 ERROR_FILE_NOT_FOUND) 
CertUtil: The system cannot find the file specified. 

Many thanks,

Ben

[Yanhui Guo]

Hi Alison,

I have the same problem in R2020b and CUDA10.2. I already install CUDA 10.2.

When I run gpuDevice()

There is error as

Error using gpuDevice (line 26)

CUDA driver version 10.1 is not supported. Update CUDA driver to

version 10.2 or greater. For more information on GPU support, see GPU

Support by Release.

After I run the code

cd ([matlabroot '/bin/win64'])

!CertUtil -hashfile gpushim.dll SHA1

I got that:

SHA1 hash of file gpushim.dll:

f5 39 63 20 25 d7 2a df 1d 00 5a 8a 74 f1 a2 26 5a b7 4b ff

CertUtil: -hashfile command completed successfully.

Please help.

Thanks a lot.