ML with OpenMPI

[Lisandro Dalcin]

Give a try. When using MPICH2, PETSc just passes
"--with-mpi=PATH_TO_MPI" and ML get it right. Perhaps ML have some
trouble with OpenMPI, I've never tried. If you built OpenMPI yourself
and with shared libs, do not forget to define LD_LIBRARY_PATH to point
to the dir with the OpenMPI libs. If not, some configure test of ML
could fail, and then MPI is assumed to be absent.


On 3/21/08, Jed Brown <jed at 59a2.org> wrote:
> On Fri 2008-03-21 19:31, Lisandro Dalcin wrote:
>  > Mmm... I believe this is a configuration issue... if ML_MPI were
>  > defined, then ML_USR_COMM should be MPI_Comm. But the problem is
>  > perhaps on the ML side, not the PETSc side.
>  >
>  > "ml_common.h" #define ML_MPI if macro HAVE_MPI is defined. In turn
>  > HAVE_MPI is at "ml_config.h", and that file is surelly generated by ML
>  > configure script. For some reason ML's configure failed to found MPI
>  > with the command line stuff PETSc pass to it.  Look at the
>  > 'config.log' file inside the "ml-5.0" dir to find what happened.
>
>
> From the ML docs, it looks like ML's configure expects --with-mpi-compilers if it
>  is building with MPI.  I modified config/PETSc/packages/ml.py to include this
>  option and I'll let you know if it fixes the problem.
>
>
>  Jed
>
>


-- 
Lisandro Dalcín
---------------
Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
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