OK
Very good.
But I get
from process 0 out of 1 on Teucidide
with MPI_Comm_size(MPI_COMM_WORLD, &numprocs);
How can I set numprocs to 2 for example?
===========================================================================
Patrick DUPRÉ | | email: pdupre@xxxxxxx
Laboratoire interdisciplinaire Carnot de Bourgogne
9 Avenue Alain Savary, BP 47870, 21078 DIJON Cedex FRANCE
Tel: +33 (0)380395988 | | Room# D114A
===========================================================================
> Sent: Sunday, September 19, 2021 at 10:35 PM
> From: "Jonathan Billings" <billings@xxxxxxxxxx>
> To: users@xxxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: mpi_Init
>
> On Sun, Sep 19, 2021 at 08:33:21PM +0200, Patrick Dupre wrote:
> > Hello,
> >
> > I installed mpich
> > and set the path to
> > /usr/lib64/mpich/bin
> > however, it seems that I need
> > MPI_init
> >
> > Checking if MPI is available
> > checking for mpif90... mpif90
> > checking for MPI_Init... no
> > checking for MPI_Init in -lmpi... no
> > checking for MPI_Init in -lmpich... no
> > configure: error: MPI not found: openmpi
>
> Rather than setting the PATH, you should have run:
>
> module load mpi/mpich-x86_64
>
> ... before compiling. That loads the mpich environment module, which
> defines a bunch of environment modules. Environment Modules are very
> popular on HPC systems, lets you have multiple versions and varieties
> of packages without them stepping on each other. You load the
> appropriate module before compiling or running software and it gets
> the specific libraries/executables/includes/etc.
>
> For example, here is the module file for mpich:
>
> $ cat /usr/share/modulefiles/mpi/mpich-x86_64
> #%Module 1.0
> #
> # MPICH module for use with 'environment-modules' package:
> #
>
> # Only allow one mpi module to be loaded at a time
> conflict mpi
>
> # Define prefix so PATH and MANPATH can be updated.
> setenv MPI_BIN /usr/lib64/mpich/bin
> setenv MPI_SYSCONFIG /etc/mpich-x86_64
> setenv MPI_FORTRAN_MOD_DIR /usr/lib64/gfortran/modules/mpich
> setenv MPI_INCLUDE /usr/include/mpich-x86_64
> setenv MPI_LIB /usr/lib64/mpich/lib
> setenv MPI_MAN /usr/share/man/mpich-x86_64
> setenv MPI_PYTHON_SITEARCH %{python2_sitearch}/mpich
> setenv MPI_PYTHON2_SITEARCH %{python2_sitearch}/mpich
> setenv MPI_PYTHON3_SITEARCH /usr/lib64/python3.9/site-packages/mpich
> setenv MPI_COMPILER mpich-x86_64
> setenv MPI_SUFFIX _mpich
> setenv MPI_HOME /usr/lib64/mpich
> prepend-path PATH /usr/lib64/mpich/bin
> prepend-path LD_LIBRARY_PATH /usr/lib64/mpich/lib
> prepend-path MANPATH :/usr/share/man/mpich-x86_64
> prepend-path PKG_CONFIG_PATH /usr/lib64/mpich/lib/pkgconfig
>
>
> --
> Jonathan Billings <billings@xxxxxxxxxx>
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