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

[Paulo César Pereira de Andrade]

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