GAMS grid - passing addional arguments

GAMS
1

Dear GAMS community:

I started using the GAMS grid computing facility together with the torque scheduler. The operating system is Ubuntu x64 12.04.2.

The job submission from GAMS works really nice, but now I want to pass additional arguments to the scheduler, i.e. I want to control the resources from within GAMS.

My idea was, to create a environment variable THRD, which contains the number of threads. This environment variable is used in gmsgrid.run:

script=${3}gridjob.sh
echo “#/bin/bash” > $script
echo “#PBS -l nodes=1:ppn=$THRD” >> $script
echo “export SYSDIR=/opt/gams/stable” >> $script
echo “export LD_LIBRARY_PATH=${SYSDIR}:$LD_LIBRARY_PATH” >> $script
echo “cd $3” >> $script
echo “cd …/…/” >> $script
echo ${SYSDIR}/$1 $2 $4 >> $script
echo ${SYSDIR}/gmscr_ux.out $2 >> script echo echo OK \> {3}finished >> $script

qsub script -o {3} -e ${3}

My problem is, that I cannot change the environment variable from within GAMS.
I tried to change it by including:

Execute “export THRD=4”

,but it didn’t change anything.

Is there a way to change the environment variable from within GAMS during runtime?

Thank you very much for you help!

Best regards,
Carleson


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2

Hi all,

I found a way of passing arguments to the grid submission script gmsgrid.run…

When the gams program is called from a bash script, the environment variable can be set in the shell script, e.g.
#!/bin/bash
export THRD=4
gams foobar.gms s=foo gdir=bar

It is not the most elegant, solution but it seems to work.

Best,
Carleson


On Friday, May 10, 2013 3:19:55 PM UTC+2, Carleson wrote:

Dear GAMS community:

I started using the GAMS grid computing facility together with the torque scheduler. The operating system is Ubuntu x64 12.04.2.

The job submission from GAMS works really nice, but now I want to pass additional arguments to the scheduler, i.e. I want to control the resources from within GAMS.

My idea was, to create a environment variable THRD, which contains the number of threads. This environment variable is used in gmsgrid.run:

script=${3}gridjob.sh
echo “#/bin/bash” > $script
echo “#PBS -l nodes=1:ppn=$THRD” >> $script
echo “export SYSDIR=/opt/gams/stable” >> $script
echo “export LD_LIBRARY_PATH=${SYSDIR}:$LD_LIBRARY_PATH” >> $script
echo “cd $3” >> $script
echo “cd …/…/” >> $script
echo ${SYSDIR}/$1 $2 $4 >> $script
echo ${SYSDIR}/gmscr_ux.out $2 >> script echo echo OK \> {3}finished >> $script

qsub script -o {3} -e ${3}

My problem is, that I cannot change the environment variable from within GAMS.
I tried to change it by including:

Execute “export THRD=4”

,but it didn’t change anything.

Is there a way to change the environment variable from within GAMS during runtime?

Thank you very much for you help!

Best regards,
Carleson


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