Hi Tobias,
So i use now in my submission script the option you were quoting i.e > srun --export=ALL which is actually the default as stated in the slurm documentation. Setting the following environment to change the buffer size in both formatted/unformatted I/O 😎 export GFORTRAN_FORMATTED_BUFFER_SIZE=10000 export GFORTRAN_UNFORMATTED_BUFFER_SIZE=10000 export GFORTRAN_UNBUFFERED_ALL=n Does not work even on gcc/gfortran 11.2 If i set the same way some environment variables for openMPI, it is working. So this is not related to the forwarding of environment variables with srun. Are the variables set correct ? Best, Denis ________________________________ From: Tobias Burnus <tob...@codesourcery.com> Sent: Thursday, February 24, 2022 9:20:26 AM To: Bertini, Denis Dr.; Harald Anlauf Cc: fortran@gcc.gnu.org Subject: Re: Problem setting buffer size for gfortran ( v 11.2) Hi Denis, On 24.02.22 09:15, Bertini, Denis Dr. via Fortran wrote: > 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. I didn't – but the manual did: srun --export=... See: https://slurm.schedmd.com/srun.html#OPT_export_1 Good luck, Tobias ----------------- Siemens Electronic Design Automation GmbH; Anschrift: Arnulfstraße 201, 80634 München; Gesellschaft mit beschränkter Haftung; Geschäftsführer: Thomas Heurung, Frank Thürauf; Sitz der Gesellschaft: München; Registergericht München, HRB 106955
