[petsc-dev] hypre and CUDA

[Karl Rupp]

Hi,

one way to test is to run a sequential example through nv-prof:
  $> nvprof ./ex56 ...

https://devblogs.nvidia.com/cuda-pro-tip-nvprof-your-handy-universal-gpu-profiler/

If it uses the GPU, then you will get some information on the GPU 
kernels called. If it doesn't use the GPU, the list will be (almost) empty.

Best regards,
Karli



On 8/15/19 5:47 PM, Mark Adams via petsc-dev wrote:
> I have configured with Hypre on SUMMIT, with cuda, and it ran. I'm now 
> trying to verify that it used GPUs (I doubt it). Any ideas on how to 
> verify this? Should I use the cuda vecs and mats, or does Hypre not 
> care. Can I tell hypre not to use GPUs other than configuring an 
> non-cude PETSc? I'm not sure how to run a job without GPUs, but I will 
> look into it.
> 
> Mark