[petsc-users] MPI+OpenMP+MKL

[Matthew Knepley]

On Fri, Apr 7, 2023 at 10:06 AM Astor Piaz <appiazzolla at 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?
>

You should configure using --with-threadsafety

  Thanks,

     Matt


> Thank you!
> --
> Astor
>


-- 
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/>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20230407/651591ad/attachment.html>