Hi Tobias
I can try that but on our cluster we are bound to use
srun (slurm).
Do you know how to use the same functionality with srun
to set the environment variables.
Best
Denis
________________________________
From: Tobias Burnus <tob...@codesourcery.com>
Sent: Thursday, February 24, 2022 9:13:18 AM
To: Bertini, Denis Dr.; Harald Anlauf
Cc: fortran@gcc.gnu.org
Subject: Re: Problem setting buffer size for gfortran ( v 11.2)
Hi,
On 24.02.22 08:57, Bertini, Denis Dr. via Fortran wrote:
> Additonnaly i ran interactively my test program without slurm on with just
> one MPI process on
I think you either use Open MPI or MPICH. Can you try setting the environment
variable
when invoking MPI by adding the -x or -env (-envlist, ...) option like in:
Open MPI
mpirun -x GFORTRAN_UNFORMATTED_BUFFER_SIZE=1024000 ...
cf. https://www.open-mpi.org/doc/v1.8/man1/mpirun.1.php
or
MPICH:
mpiexec -env GFORTRAN_UNFORMATTED_BUFFER_SIZE 1024000 ...
cf. https://www.mpich.org/static/docs/v3.1/www1/mpiexec.html
See linked man pages for details and additional environment-related options.
Tobias
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