Ok then, how can i try getting more than one GPU with the same number of MPI processes?
Thanks, On Wed, Sep 12, 2018 at 2:20 PM, Matthew Knepley <[email protected]> wrote: > On Wed, Sep 12, 2018 at 5:13 PM Manuel Valera <[email protected]> wrote: > >> Hello guys, >> >> I am working in a multi-gpu cluster and i want to request 2 or more GPUs, >> how can i do that from PETSc? evidently mpirun -n # is for requesting >> processors, but what if i want to use one mpi processor but several GPUs >> instead? >> > > We do not do that. You would run the same number of MPI processes as GPUs. > Note that > you can have more than 1 MPI process on a processor. > > Matt > > >> Also, i understand the GPU handles the linear system solver, but what >> about the data management? can i do DMs for other than the linear solver >> using the GPUs >> ? >> >> Thanks once more, >> >> >> > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which their > experiments lead. > -- Norbert Wiener > > https://www.cse.buffalo.edu/~knepley/ > <http://www.cse.buffalo.edu/~knepley/> >
