One core used in bash

Wenjun Zhu

By checking the .o log file, I see:

Does that means only one core is used? causing the solving time is quite long.

if so, what can I do to use all the cores?

My batch file is :

#!/bin/bash
# Request 8 cores in an MPi environment
#$ -pe mpi 8
# Request 256 gigabytes of real memory (RAM) 8 cores *32G = 256
#$ -l rmem=32G

# load the module for the program we want to run
module load apps/altair_flux/binary/2021.2

# Use fixed values for the GUI-memories
export JVM_MEMORY=1000 # In MBytes
export MEMSIZC3=0 # In Bytes
export MEMSIZN3=0 # In Bytes

# This allows multiple instances of Flux
export SYNC_SOCKET=0
#
# --- Making the command line ---
#
# Specify the path to use executable of Flux
PATH_TO_FLUX_EXECUTABLE=/usr/local/packages/apps/altair_flux/2021.2/binary/altair/flux/Flux/Bin/prg/lin64/flux

# Specify the python script to execute
YOUR_PYTHON_SCRIPT=/home/els20wz/Downloads/hpcfluxtest.py
# Get the application of the python extracting its header
FLUX_APP=$(head -n 1 $YOUR_PYTHON_SCRIPT | cut -d ! -f 2 | awk '{$1=$1;print}' | cut -d ' ' -f 1)
# Launch Flux
$PATH_TO_FLUX_EXECUTABLE -application $FLUX_APP -runPyInSilentModeAndExit $YOUR_PYTHON_SCRIPT -batch

Mohammed Elamin_22169

Hello, 

You can use the env variable "FLUX_NCORES=<NCORES>" to set the number of cores you want.  If NCORES=0, Flux will use all the cores available.

Thanks,