> OpenMP threads are able to spawn MPI processes I am curious why you have this usage. Is it because that you want a pure OpenMP code (i.e., not MPI capable) to call petsc?
--Junchao Zhang On Fri, Apr 7, 2023 at 9:06 AM Astor Piaz <appiazzo...@gmail.com> wrote: > Hello petsc-users, > I am trying to use a code that is parallelized with a combination of > OpenMP and MKL parallelisms, where OpenMP threads are able to spawn MPI > processes. > I have carefully scheduled the processes such that the right amount is > launched, at the right time. > When trying to use my code inside a MatShell (for later use in an FGMRES > KSPSolver), MKL processes are not being used. > > I am sorry if this has been asked before. > What configuration should I use in order to profit from MPI+OpenMP+MKL > parallelism? > > Thank you! > -- > Astor >