[gmx-users] WG: Issue with CUDA and gromacs

[Benson Muite]

What is your cmake build command?

Have you tried to specify compute capabilities?

http://manual.gromacs.org/documentation/2019/install-guide/index.html#cuda-gpu-acceleration

GMX_CUDA_TARGET_SM=6.1

GMX_CUDA_TARGET_COMPUTE=6.1

References:

https://developer.nvidia.com/cuda-gpus

https://www.myzhar.com/blog/tutorials/tutorial-nvidia-gpu-cuda-compute-capability/

On 1/30/19 6:20 PM, Tafelmeier, Stefanie wrote:

Please excuse, the tables didn't work, I hope this is better:



Dear all,



We are facing an issue with the CUDA toolkit.

We tried several combinations of gromacs versions and CUDA Toolkits. No Toolkit older than 9.2 was possible to try as there are no driver for nvidia available for a Quadro P6000.





Gromacs  +  CUDA  =>  Error message



2019  +  10.0  =>  gmx mdrun:

Assertion failed:

Condition: stat == cudaSuccess

Asynchronous H2D copy failed



2019  +  9.2  =>  gmx mdrun:

Assertion failed:

Condition: stat == cudaSuccess

Asynchronous H2D copy failed



2018.5  +  9.2  +  gmx mdrun: Fatal error:

HtoD cudaMemcpyAsync failed: invalid argument



5.1.5  +  9.2  =>Installation make: nvcc fatal   : Unsupported gpu architecture 'compute_20'*



2016.2  +  9.2  =>  Installation make: nvcc fatal   : Unsupported gpu architecture 'compute_20'*





*We also tried to set the target CUDA architectures as described in the installation guide (manual.gromacs.org/documentation/2019/install-guide/index.html). Unfortunately it didn't work.

Performing simulations on CPU only always works, yet of cause are more slowly than they could be with additionally using the GPU.

The issue #2761 (https://redmine.gromacs.org/issues/2762) seems similar to our problem.

Even though this issue is still open, we wanted to ask if you can give us any information about how to solve this problem?



Many thanks in advance.

Best regards,

Stefanie Tafelmeier





Further details if necessary:

The workstation:

2 x Xeon Gold 6152 @ 3,7Ghz (22 K, 44Th, AVX512) Nvidia Quadro P6000 with 3840 Cuda-Cores



The simulations system:

Long chain alkanes (previously used with gromacs 5.1.5 and CUDA 7.5 - worked perfectly)








ZAE Bayern
Stefanie Tafelmeier
Bereich Energiespeicherung/Division Energy Storage
Thermische Energiespeicher/Thermal Energy Storage
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