Changeset 2644 for trunk/LMDZ.MARS/deftank

Timestamp:

Mar 21, 2022, 5:00:11 PM (3 years ago)

Author:

romain.vande

Message:

LMDZ_MARS:
OMP : update the batch example for Occigen and the README associated
RV

Location:

trunk/LMDZ.MARS/deftank/occigen

Files:

• README (modified) (1 diff)
• run_month1 (modified) (2 diffs)

trunk/LMDZ.MARS/deftank/occigen/README

@@ -3 +3 @@
 a job "run_month2" which runs a simulation for month #2 which then possibly
 launches a job "run_month3" etc.
+
+OMP : in "run_month1" the number denoted A, B and C should be choose according
+to these rules : 
+_ AxB = number of MPI threads should be .LE. to #lat/2
+_ C = number of OMP tasks should be .LE. to #lev/10
+_ BxC compatible to the node specification (ex; here BDW28 so .LT. 28 )
+_ Be carefull to change the line "export OMP_NUM_THREADS=" to the correct number C
+
 The starting and ending months of the simulation can be set in "run_month1"
 One should adapt the script (and underlying "run0" and "run.def.ref") to

trunk/LMDZ.MARS/deftank/occigen/run_month1

@@ -1 +1 @@
 #!/bin/bash
-#SBATCH --nodes=1
-#SBATCH --ntasks-per-node=24
+#SBATCH --nodes=6                          #A
+#SBATCH --ntasks-per-node=4                #B
+#SBATCH --cpus-per-task=5                  #C
 #SBATCH -J clim
 #SBATCH --time=13:00:00
 #SBATCH --output run_month1.%j.out
 ##SBATCH --mem=8GB
-#SBATCH --constraint=[HSW24|BDW28]
+#SBATCH --constraint=[BDW28]
 #SBATCH --exclusive
 
@@ -32 +33 @@
 
 \rm -f  error; touch error
+
+# environment setup for OpenMP:
+export I_MPI_DOMAIN=auto
+export I_MPI_PIN_RESPECT_CPUSET=0
+#Make sure that OMP_NUM_THREADS = cpus-per-task * KMP_HW_SUBSET
+export KMP_HW_SUBSET=1T
+export OMP_NUM_THREADS=5                    #C
+export OMP_STACKSIZE=400M
+export KMP_AFFINITY=granularity=fine,compact,1,0,verbose
 
 case $true_num in