Off topic:Specify a different temporary file directory in SGE

Question

[san.san]

I'm running out of disk space on /tmp on nodes and have been advised to specify my scratch directory for temp files. The only thing is that I'm not sure how to do that and all the answers I came across online require some previous knowledge.

I tried adding #$ -v TMPDIR=/my/scratch/ to my script but that hasn't changed anything and my jobs are not completing.

Many thanks for you help.