= reservation_maui/moab module =
* QCG_AR_MAUI_PARTITION - name of the partition to be reserved (used in !Maui/Moab reservation module)
= reservation_sge =
* QCG_GE_PE_NAME - name of the Grid Engine parallel environment to be used by QCG-Computing
* QCG_GE_AR_QUEUE - name of the Grid Engine queue to be reserved (might be wildcard expression)
= plgrid_info =
* QCG_SCRATCH_DIR_ROOT - root directory of users scratch directories
* QCG_GROUP_DIR_ROOT - root director of groups home directories
* QCG_STATE_DIR - state directory, default: `/var/run/qcg/qcg-comp/`
= ganglia_info =
* QCG_GANGLIA_URL - a TCP endpoint for Ganglia Gmetad daemon, e.g.: tcp://10.3.1.1:8649/ (Mandatory)
* QCG_GANGLIA_METRIC_REGEXP - regular expression used to filter list of returned host metrics, e.g.: hptemp (Optional)
= general =
* QCG_DEFAULT_QUEUE - default queue name 
* QCG_DEFAULT_MEM - default memory per process in megabytes (QCG_DEFAULT_MEM=1500)
* QCG_RSRV_NODES_PPN - if nonempty then system support reservation of nodes