[Ipopt] error running parallel branch of Ipopt with intel mpi

[Andreas Waechter]

Hi Hans,

One important thing that might cause your problem:

You cannot use the MUMPS version compiled in ThirdParty, since that one is 
for serial use and implements is own fake MPI functions.  You need to 
compile MUMPS and all its dependencies first separately (and test it), and 
then tell the Ipopt configure via flags how to link with MUMPS (all link 
flags) and where the header files are.

Andreas

On Mon, 6 Dec 2010, Hans Pirnay wrote:

> Hello everyone,
>
> I know the parallel version is not officially supported, but maybe
> someone can help me on this.
>
> I have compiled the parallel branch of Ipopt using intelmpi, which is
> derived from MPICH.
>
> Compilation went well. I configured with
>
> ../configure MPICC=mpiicc MPICXX=mpiicpc MPIF77="mpiifort -nofor_main"
> ADD_CXXFLAGS="-DMPICH_IGNORE_CXX_SEEK"
>
> The executables were all set through the corresponding environment
> variables on the cluster I'm working on. I needed to add the last flag
> to make an error about SEEK_SET go away
> (http://cactuscode.org/pipermail/users/2006-February/000791.html)
>
> So the code is compiled, and checking with ldd tells me that all the
> correct libraries are linked, but when I run the ParScalableProblems
> (or any other example), I get
>
> $MPIEXEC -np 2 par_solve_problem MPara5_1 100
> Error encountered before initializing MPICH
> Error encountered before initializing MPICH
>
> (The error message is repeated for every process)
>
> The cluster has sunmpi as an alternative, but when I use that one, I
> get a compilation error for MUMPS that I can't figure out. Any help
> would be appreciated!
>
> Hans
>
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