问题
I'm trying to obtain a value from another file and use this within a SLURM submission script. However, I get an error that the value is non-numerical, in other words, it is not being dereferenced.
Here is the script:
#!/bin/bash
# This reads out the number of procs based on the decomposeParDict
numProcs=`awk '/numberOfSubdomains/ {print $2}' ./meshModel/decomposeParDict`
echo "NumProcs = $numProcs"
#SBATCH --job-name=SnappyHexMesh
#SBATCH --output=./logs/SnappyHexMesh.log
#
#SBATCH --ntasks=`$numProcs`
#SBATCH --time=240:00
#SBATCH --mem-per-cpu=4000
#First run blockMesh
blockMesh
#Now decompose the mesh
decomposePar
#Now run snappy in parallel
mpirun -np $numProcs snappyHexMesh -parallel -overwrite
When I run this as a normal Bash shell script, it prints out the number of procs correctly and makes the correct mpirun call. Thus the awk command parses out the number of procs correctly and the variable is dereferenced as expected.
However, when I submit this to SLURM using:
sbatch myScript.sh
I get the error:
sbatch: error: Invalid numeric value "`$numProcs`" for number of tasks.
Can anyone help with this?
回答1:
This won't work. What happens when you run
sbatch myscript.sh
is that slurm parses the script for those special #SBATCH lines, generates a job record, stores the batch script somewhere. The batch script is executed only later when the job runs.
So you need to structure you workflow in a slightly different way, and first calculate the number of procs you need before submitting the job. Note that you can use something like
sbatch -n $numProcs myscript.sh
, you don't need to autogenerate the script (also, mpirun should be able to get the number of procs in your allocation automatically, no need to use "-np").
来源：https://stackoverflow.com/questions/24508040/use-bash-variable-within-slurm-sbatch-script