[Ipopt] [mumps-users] Ipopt MUMPS interface and MPI problems

[Dominique Orban]

I'm using 3.11.8 but the problem persists unless you build with
-DHAVE_MPI_INITIALIZED.

Dominique


On Wed, Jul 9, 2014 at 6:29 PM, Paulo César Pereira de Andrade <
paulo.cesar.pereira.de.andrade at gmail.com> wrote:

> 2014-07-09 17:37 GMT-03:00 Dominique Orban <dominique.orban at gmail.com>:
>
>   Hi,
>
> > In Homebrew, we compile IPOPT with -DHAVE_MPI_INITIALIZED to get around
> > this. See
> > https://github.com/Homebrew/homebrew-science/blob/master/ipopt.rb#L36
> and
> > recent discussions on the IPOPT mailing list.
>
>   Many thanks! I was indeed trying to fix the package and did not
> notice that the latest release already have the solution for the problem.
>
> > Dominique
> >
> >
> > On Wed, Jul 9, 2014 at 3:45 PM, Paulo César Pereira de Andrade
> > <paulo.cesar.pereira.de.andrade at gmail.com> wrote:
> >>
> >>   Hi,
> >>
> >>   The Ipopt MUMPS interface calls MPI_Init in the class constructor
> >> and MPI_Finalize in the destructor. But openmpi causes a fatal
> >> error due to it:
> >>
> --------------------------------------------------------------------------
> >> Calling MPI_Init or MPI_Init_thread twice is erroneous.
> >>
> --------------------------------------------------------------------------
> >>
> >> Debian uses this patch for Ipopt:
> >>
> >>
> >>
> http://sources.debian.net/src/coinor-ipopt/3.11.7-2/debian/patches/mpi-init.patch
> >>
> >> But "only" that patch causes the Ipopt testsuite to fail due to calling
> >> MPI functions before MPI_Init.
> >>
> >> What is the proper way to handle it? I believe it should be
> >> somewhat like only call MPI_Init and MPI_Finalize from the
> >> test suite main function, but I have few knowledge of all
> >> details (e.g. maybe only required if linking Ipopt to a parallel
> >> MUMPS) ...
>
>
> Paulo
>
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