= To scratch or not to scratch ? =
By default QCG will use `$HOME` as the place where the job sandboxes (i.e. directories that provides separation between different jobs and where input/output files are staged) will be created. If you wish you can configure it to use other partition than the home file system. However the partition must have a subdirectory for every user, e.g.
{{{
ls -1 /mnt/qcg
/mnt/qcg/user1
/mnt/qcg/user2
...
}}} 

* edit `/etc/sysconfig/qcg-compd` and set root directory of the job dirs.
{{{
QCG_SCRATCH_DIR_ROOT=/mnt/qcg
}}}
* set !UseScratch option (put it above `<FactoryAttributes>`) in `qcg-compd.xml`:
{{{
<UseScratch>true</UseScratch>
<FactoryAttributes>
...
}}}