On Wed, Feb 23, 2022 at 11:30 AM Qi Yang <qiy...@oakland.edu> wrote: > To whom it may concern, > > Hope this email finds you well. > > I am a student from Oakland University who is trying to use Petsc in my > project. > > I found that the Petsc 3.16 now is supporting AMG preconditioner of hypre > with gpu on Nvidia and AMD card, however, do you use openCL to realize it ? >
No > or do you realize it by using cuda on Nvidia and hip on AMD, if it is not > openCL, how do you enable with flag? like -pc_hypre_gamg_mat_type > aijcusparse or just -mat_type aijcusparse(which is already used in former > edition)? > See the docs to install PETSc with CUDA support, etc, https://petsc.org/release/overview/ You can look at examples that use hypre, but first get your code working with built-in solver on the CPU, then turn CUDA on (--with-cuda=1) and use built-in solvers with CUDA (eg, -mat_type aijcusparse), Then configure with hypre (--download-hypre) and try it with -pc_type hypre. Good luck, mark > > Sorry for the disturbance, I did not find the answer in your document, > looking forward to hearing from you soon. > > Appreciate your time. > > Best regards, > Qi >
