[petsc-users] Error with parallel solve

[Stefano Zampini]

This is a bug in the most recent version of mumps related with using
scalapack for the factorization of the root node of the nested dissection
tree. I have reported it already on this list few months ago.
You can circumvent the problem by using a sequential solver for it. There's
a command line option in petsc as well as API that allows you to do so.
-mat_mumps_icntl_13 1

Il Lun 8 Apr 2019, 21:44 Manav Bhatia via petsc-users <
petsc-users at mcs.anl.gov> ha scritto:

>
>
> On Apr 8, 2019, at 1:33 PM, Mark Adams <mfadams at lbl.gov> wrote:
>
> Are you able to run the exact same job on your Mac? ie, same number of
> processes, etc.
>
>
> This is what I am trying to dig into now.
>
> My Mac has 4 cores.
>
> I have used several different Linux machines with different number of
> processors: 4, 12, 10, 20. They all eventually crash.
>
> I am trying to establish if the point of crash is the same across
> machines.
>
> -Manav
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20190408/5e5d7577/attachment.html>