* Parameter passing from JDL -> ( WMS -> ) CREAM -> BLAH -> LRMS

** Mechanism

   Described best in http://grid.pd.infn.it/cream/field.php?n=Main.ForwardOfRequirementsToTheBatchSystem
   The bug http://savannah.cern.ch/bugs/?42288 can be circumvented by setting cerequirements
   explicitly.

*** Set cerequirements in JDL

** By means of a 'hook'

   - BLAH translates requirements to environment variables; the inequivalencies < and <=
     are treated in the same way by appending _Max to the variable name; same with > and >=
     which get _Min.

   - environment variables are passed to pbs_local_submit_attributes.sh, if it exists
     in $GLITE_LOCATION/bin.

   - this script must decide what to do with the requirements; stdout is going
     to the pbs submit script.

** Example

   In SA3 an example script was created and tested; see https://savannah.cern.ch/task/?9461
   
   - the environments are treated like this:
     memmin="$GlueHostMainMemoryRAMSize_Min"
     if [ -z "$memmin" ]; then
        memmin="$GlueHostMainMemoryRAMSize"
     fi
     if [ "$memmin" -gt 0 ]; then
        echo "#PBS -l mem=${memmin}mb"
     fi

** Issues