Changeset 4989 for BOL/LMDZ_Setup

Timestamp:

Jun 18, 2024, 5:42:40 PM (6 months ago)

Author:

asima

Message:

Final (really, this time) solution to the crash with message
"srun: error: “Unable to create step for job ... : More processors requested than permitted".

The crash actually only occured for "init=1" in main.sh ;
in this case, the "tmp" initialisation job must "unset" (at least) his "--cpu_per_task" option before submitting tmp_$SIM,
otherwise tmp_$SIM will "inherit" it, no matter the value in its own header.

As a "bonus" :
this change allows using "--cpus-per-task=1" in the initialisation job (as required by ce0l), instead of the previous "16" value.

File:

• BOL/LMDZ_Setup/setup.sh (modified) (2 diffs)

BOL/LMDZ_Setup/setup.sh

@@ -816 +816 @@
 #SBATCH -A "$groupe"@cpu
 #SBATCH --ntasks=1             # Nombre de processus MPI
-#SBATCH --cpus-per-task=16     # nombre de threads OpenMP
+#SBATCH --cpus-per-task=1     # nombre de threads OpenMP
 # /!\ Attention, la ligne suivante est trompeuse mais dans le vocabulaire
 # de Slurm "multithread" fait bien référence à l'hyperthreading.
@@ -880 +880 @@
    if [ $ok_guide != y ] ; then # Running first simulation automatically except for nudging
       cat <<...eod>> tmp
-         $submit tmp_$SIM
+        # unset "tmp" job options before submitting tmp_$SIM ; 
+        #  otherwise, "--cpus-per-task" is "inherited" by tmp_$SIM regardless of the value in his own header
+        bash -c 'unset \$(env | egrep "SLURM_|SBATCH_|SRUN_"| cut -d= -f1) ; $submit tmp_$SIM'
 ...eod
    fi