avoid that PRODSPLIT is overwritten

(cherry picked from commit 9946a60)

Author: pbuehler

GRID/utils/grid_submit.sh

@@ -194,7 +194,7 @@ ONGRID=0
 
 JOBTTL=82000
 CPUCORES=8
-PRODSPLIT=1
+PRODSPLIT=${PRODSPLIT:-1}
 # this tells us to continue an existing job --> in this case we don't create a new workdir
 while [ $# -gt 0 ] ; do
     case $1 in

MC/run/PWGUD/runSTARlightANCHOR.sh

@@ -24,4 +24,4 @@ export ALIEN_PROC_ID=2963436952
 export ALIEN_JDL_ANCHOR_SIM_OPTIONS="-gen external -ini ${PWD}/GenStarlight.ini --embedding -nb ${NBKGEVENTS} -colBkg PbPb -genBkg pythia8 -procBkg heavy_ion"
 
 ${O2DPG_ROOT}/MC/config/PWGUD/ini/makeStarlightConfig.py --process kCohPsi2sToMuPi --collType PbPb --eCM 5360 --rapidity cent_eta
-${O2DPG_ROOT}/MC/run/ANCHOR/anchorMC.sh
+${O2DPG_ROOT}/MC/run/ANCHOR/anchorMC.sh