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

[Paulo César Pereira de Andrade]

2014-07-13 17:11 GMT-03:00 Antonio Trande <anto.trande at gmail.com>:

> On 07/12/2014 12:14 AM, Stefan Vigerske wrote:
>> Hi,
>>
>> I usually never use a parallel MUMPS with Ipopt. I just use the
>> sequential one that the Ipopt buildsystem sets up and builds.
>>
>> I can imagine, that have the same Ipopt lib for both types of MUMPS
>> will not work, because the IpMumpsSolverInterface.cpp has the
>> comment:
>>
>> // The following line is a fix for otherwise twice-defined global
>> variable // (This would have to be taken out for a parallel MUMPS
>> version!) #define MPI_COMM_WORLD IPOPT_MPI_COMM_WORLD

  Actually, I remove this line in one of my patches.

>> Stefan
>>
>>
>
> If I have understood fine, it seems not possible to use Ipopt with
> parallel MUMPS.

  In Fedora it is the reverse right now, only parallel MUMPS is used
by Ipopt.

> - --
> Antonio Trande

Paulo