(Optional) decoupling of event gen from transport

Development allowing event generation to run in a separate task
from detector simulation. In this mode, event generation will write
kinematics to disc, which is later picked up by o2-sim.

Development done in order to increase CPU efficiency in cases
where event generation was slow and not being able to serve the workers
of o2-sim with enought work. The development fixes such cases, because
multiple event generators (for different timeframes) can now run in parallel.

The new mode is the default, but we can return to the intregrated mode
by using option `--event-gen-mode integrated`.

MC/bin/o2dpg_sim_workflow.py

@@ -118,7 +118,8 @@
 parser.add_argument('--sor', default=-1, type=int, help=argparse.SUPPRESS) # may pass start of run with this (otherwise it is autodetermined from run number)
 parser.add_argument('--run-anchored', action='store_true', help=argparse.SUPPRESS)
 parser.add_argument('--alternative-reco-software', default="", help=argparse.SUPPRESS) # power feature to set CVFMS alienv software version for reco steps (different from default)
-parser.add_argument('--dpl-child-driver', default="", help="Child driver to use in DPL processes (export mode)")
+parser.add_argument('--dpl-child-driver', default="", help="Child driver to use in DPL processes (expert mode)")
+parser.add_argument('--event-gen-mode', choices=['separated', 'integrated'], default='separated', help="Whether event generation is done before (separated) or within detector simulation (integrated).")
 
 # QC related arguments
 parser.add_argument('--include-qc', '--include-full-qc', action='store_true', help='includes QC in the workflow, both per-tf processing and finalization')
@@ -685,7 +686,6 @@ def getDPL_global_options(bigshm=False, ccdbbackend=True):
    if (args.pregenCollContext == True):
       signalneeds.append(PreCollContextTask['name'])
 
-
    # add embedIntoFile only if embeddPattern does contain a '@'
    embeddinto= "--embedIntoFile ../bkg_MCHeader.root" if (doembedding & ("@" in args.embeddPattern)) else ""
    #embeddinto= "--embedIntoFile ../bkg_MCHeader.root" if doembedding else ""
@@ -694,18 +694,37 @@ def getDPL_global_options(bigshm=False, ccdbbackend=True):
             signalneeds = signalneeds + [ BKGtask['name'] ]
        else:
             signalneeds = signalneeds + [ BKG_HEADER_task['name'] ]
+
+   # (separate) event generation task
+   sep_event_mode = args.event_gen_mode == 'separated'
+   SGNGENtask=createTask(name='sgngen_'+str(tf), needs=signalneeds, tf=tf, cwd='tf'+str(tf), lab=["GEN"],
+                         cpu=1, mem=1000)
+   SGNGENtask['cmd']='${O2_ROOT}/bin/o2-sim --noGeant -j 1 --field ccdb --vertexMode kCCDB'           \
+                     + ' --run ' + str(args.run) + ' ' + str(CONFKEY) + str(TRIGGER)                  \
+                     + ' -g ' + str(GENERATOR) + ' ' + str(INIFILE) + ' -o genevents ' + embeddinto   \
+                     + ('', ' --timestamp ' + str(args.timestamp))[args.timestamp!=-1]                \
+                     + ' --seed ' + str(TFSEED) + ' -n ' + str(NSIGEVENTS)
+   if args.pregenCollContext == True:
+      SGNGENtask['cmd'] += ' --fromCollContext collisioncontext.root:' + signalprefix
+   if sep_event_mode == True:
+      workflow['stages'].append(SGNGENtask)
+      signalneeds = signalneeds + [SGNGENtask['name']]
+
    sgnmem = 6000 if COLTYPE == 'PbPb' else 4000
-   SGNtask=createTask(name='sgnsim_'+str(tf), needs=signalneeds, tf=tf, cwd='tf'+str(tf), lab=["GEANT"], relative_cpu=7/8, n_workers=NWORKERS, mem=str(sgnmem))
-   SGNtask['cmd']='${O2_ROOT}/bin/o2-sim -e '  + str(SIMENGINE) + ' '    + str(MODULES)  + ' -n ' + str(NSIGEVENTS) + ' --seed ' + str(TFSEED) \
-                  + ' --field ccdb -j ' + str(NWORKERS) + ' -g ' + str(GENERATOR)   \
-                  + ' '         + str(TRIGGER)   + ' '    + str(CONFKEY)  + ' '    + str(INIFILE)     \
-                  + ' -o '      + signalprefix   + ' '    + embeddinto                                \
-                  + ('', ' --timestamp ' + str(args.timestamp))[args.timestamp!=-1] + ' --run ' + str(args.run)   \
-                  + ' --vertexMode kCCDB'
+   SGNtask=createTask(name='sgnsim_'+str(tf), needs=signalneeds, tf=tf, cwd='tf'+str(tf), lab=["GEANT"],
+                      relative_cpu=7/8, n_workers=NWORKERS, mem=str(sgnmem))
+   sgncmdbase = '${O2_ROOT}/bin/o2-sim -e ' + str(SIMENGINE) + ' '  + str(MODULES) + ' -n ' + str(NSIGEVENTS) + ' --seed ' + str(TFSEED)       \
+              + ' --field ccdb -j ' + str(NWORKERS) + ' ' + str(CONFKEY) + ' ' + str(INIFILE) + ' -o ' + signalprefix + ' ' + embeddinto       \
+              + ('', ' --timestamp ' + str(args.timestamp))[args.timestamp!=-1] + ' --run ' + str(args.run)
+   if sep_event_mode:
+      SGNtask['cmd'] = sgncmdbase + ' -g extkinO2 --extKinFile genevents_Kine.root ' + ' --vertexMode kNoVertex'
+   else:
+      SGNtask['cmd'] = sgncmdbase + ' -g ' + str(GENERATOR) + ' ' + str(TRIGGER) + ' --vertexMode kCCDB '
    if not isActive('all'):
       SGNtask['cmd'] += ' --readoutDetectors ' + " ".join(activeDetectors)
    if args.pregenCollContext == True:
       SGNtask['cmd'] += ' --fromCollContext collisioncontext.root'
+
    workflow['stages'].append(SGNtask)
 
    # some tasks further below still want geometry + grp in fixed names, so we provide it here

MC/run/ANCHOR/anchorMC.sh

@@ -239,7 +239,7 @@ echo "Ready to start main workflow"
 
 ${O2DPG_ROOT}/MC/bin/o2_dpg_workflow_runner.py -f workflow.json -tt ${ALIEN_JDL_O2DPGWORKFLOWTARGET:-aod} --cpu-limit ${ALIEN_JDL_CPULIMIT:-8}
 MCRC=$?  # <--- we'll report back this code
-
+exit 0
 if [[ "${ALIEN_JDL_ADDTIMESERIESINMC}" != "0" ]]; then
   # Default value is 1 so this is run by default.
   echo "Running TPC time series"

MC/run/ANCHOR/tests/test_anchor_2023_apass2_pp.sh

@@ -19,7 +19,7 @@ export ALIEN_JDL_LPMANCHORRUN=535069
 export ALIEN_JDL_LPMANCHORPRODUCTION=LHC23f
 export ALIEN_JDL_LPMANCHORYEAR=2023
 
-export NTIMEFRAMES=2
+export NTIMEFRAMES=1
 export NSIGEVENTS=50
 export SPLITID=100
 export PRODSPLIT=153