diff --git a/MC/bin/o2dpg_sim_workflow.py b/MC/bin/o2dpg_sim_workflow.py
index 2817caa82..7522ea8e3 100755
--- a/MC/bin/o2dpg_sim_workflow.py
+++ b/MC/bin/o2dpg_sim_workflow.py
@@ -94,7 +94,7 @@
 workflow['stages'] = []
 
 taskcounter=0
-def createTask(name='', needs=[], tf=-1, cwd='./', lab=[], cpu=0, mem=0):
+def createTask(name='', needs=[], tf=-1, cwd='./', lab=[], cpu=1, mem=500):
     global taskcounter
     taskcounter = taskcounter + 1
     return { 'name': name, 'cmd':'', 'needs': needs, 'resources': { 'cpu': cpu , 'mem': mem }, 'timeframe' : tf, 'labels' : lab, 'cwd' : cwd }
@@ -304,7 +304,7 @@ def getDPL_global_options(bigshm=False,nosmallrate=False):
             signalneeds = signalneeds + [ BKGtask['name'] ]
        else:
             signalneeds = signalneeds + [ BKG_HEADER_task['name'] ]
-   SGNtask=createTask(name='sgnsim_'+str(tf), needs=signalneeds, tf=tf, cwd='tf'+str(tf), lab=["GEANT"], cpu='5.')
+   SGNtask=createTask(name='sgnsim_'+str(tf), needs=signalneeds, tf=tf, cwd='tf'+str(tf), lab=["GEANT"], cpu='5.', mem='2000')
    SGNtask['cmd']='o2-sim -e ' + str(SIMENGINE) + ' ' + str(MODULES) + ' -n ' + str(NSIGEVENTS) +  ' -j ' \
                   + str(NWORKERS) + ' -g ' + str(GENERATOR) + ' ' + str(TRIGGER)+ ' ' + str(CONFKEY)      \
                   + ' ' + str(INIFILE) + ' -o ' + signalprefix + ' ' + embeddinto
@@ -315,7 +315,7 @@ def getDPL_global_options(bigshm=False,nosmallrate=False):
    # We need to be careful here and distinguish between embedding and non-embedding cases
    # (otherwise it can confuse itstpcmatching, see O2-2026). This is because only one of the GRPs is updated during digitization.
    if doembedding:
-      LinkGRPFileTask=createTask(name='linkGRP_'+str(tf), needs=[BKG_HEADER_task['name'] if usebkgcache else BKGtask['name'] ], tf=tf, cwd=timeframeworkdir)
+      LinkGRPFileTask=createTask(name='linkGRP_'+str(tf), needs=[BKG_HEADER_task['name'] if usebkgcache else BKGtask['name'] ], tf=tf, cwd=timeframeworkdir, cpu='0',mem='0')
       LinkGRPFileTask['cmd']='''
                              ln -nsf ../bkg_grp.root o2sim_grp.root;
                              ln -nsf ../bkg_geometry.root o2sim_geometry.root;
@@ -323,7 +323,7 @@ def getDPL_global_options(bigshm=False,nosmallrate=False):
                              ln -nsf ../bkg_grp.root bkg_grp.root
                              '''
    else:
-      LinkGRPFileTask=createTask(name='linkGRP_'+str(tf), needs=[SGNtask['name']], tf=tf, cwd=timeframeworkdir)
+      LinkGRPFileTask=createTask(name='linkGRP_'+str(tf), needs=[SGNtask['name']], tf=tf, cwd=timeframeworkdir, cpu='0', mem='0')
       LinkGRPFileTask['cmd']='ln -nsf ' + signalprefix + '_grp.root o2sim_grp.root ; ln -nsf ' + signalprefix + '_geometry.root o2sim_geometry.root'
    workflow['stages'].append(LinkGRPFileTask)
 
@@ -421,7 +421,7 @@ def createRestDigiTask(name, det='ALLSMALLER'):
      taskname = 'tpcclusterpart' + str(s) + '_' + str(tf)
      tpcclustertasks.append(taskname)
      tpcclussect = createTask(name=taskname, needs=[TPCDigitask['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"], cpu='1', mem='2000')
-     tpcclussect['cmd'] = 'o2-tpc-chunkeddigit-merger --tpc-sectors ' + str(s) + ' --rate 1000 --tpc-lanes 8 '
+     tpcclussect['cmd'] = 'o2-tpc-chunkeddigit-merger --tpc-sectors ' + str(s) + ' --rate 1000 --tpc-lanes ' + str(NWORKERS)
      tpcclussect['cmd'] += ' | o2-tpc-reco-workflow ' + getDPL_global_options() + ' --input-type digitizer --output-type clusters,send-clusters-per-sector --outfile tpc-native-clusters-part' + str(s) + '.root --tpc-sectors ' + str(s) + ' --configKeyValues "GPU_global.continuousMaxTimeBin=100000;GPU_proc.ompThreads=1"'
      workflow['stages'].append(tpcclussect)
 
@@ -437,7 +437,7 @@ def createRestDigiTask(name, det='ALLSMALLER'):
    ITSRECOtask['cmd'] = 'o2-its-reco-workflow --trackerCA --tracking-mode async ' + getDPL_global_options()
    workflow['stages'].append(ITSRECOtask)
 
-   FT0RECOtask=createTask(name='ft0reco_'+str(tf), needs=[det_to_digitask["FT0"]['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"])
+   FT0RECOtask=createTask(name='ft0reco_'+str(tf), needs=[det_to_digitask["FT0"]['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"], mem='1000')
    FT0RECOtask['cmd'] = 'o2-ft0-reco-workflow ' + getDPL_global_options()
    workflow['stages'].append(FT0RECOtask)
 
@@ -445,19 +445,19 @@ def createRestDigiTask(name, det='ALLSMALLER'):
    ITSTPCMATCHtask['cmd']= 'o2-tpcits-match-workflow ' + getDPL_global_options(bigshm=True, nosmallrate=False) + ' --tpc-track-reader \"tpctracks.root\" --tpc-native-cluster-reader \"--infile tpc-native-clusters.root\"'
    workflow['stages'].append(ITSTPCMATCHtask)
 
-   TRDTRACKINGtask = createTask(name='trdreco_'+str(tf), needs=[TRDDigitask['name'], ITSTPCMATCHtask['name'], TPCRECOtask['name'], ITSRECOtask['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"])
-   TRDTRACKINGtask['cmd'] = 'o2-trd-global-tracking ' + getDPL_global_options(bigshm=True, nosmallrate=False) + ' --disable-mc' # TRD tracker cannot handle MC labels yet
+   TRDTRACKINGtask = createTask(name='trdreco_'+str(tf), needs=[TRDDigitask['name'], ITSTPCMATCHtask['name'], TPCRECOtask['name'], ITSRECOtask['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"], cpu='1', mem='2000')
+   TRDTRACKINGtask['cmd'] = 'o2-trd-global-tracking ' + getDPL_global_options() + ' --disable-mc' # TRD tracker cannot handle MC labels yet
    workflow['stages'].append(TRDTRACKINGtask)
 
-   TOFRECOtask = createTask(name='tofmatch_'+str(tf), needs=[ITSTPCMATCHtask['name'], det_to_digitask["TOF"]['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"])
+   TOFRECOtask = createTask(name='tofmatch_'+str(tf), needs=[ITSTPCMATCHtask['name'], det_to_digitask["TOF"]['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"], mem='1500')
    TOFRECOtask['cmd'] = 'o2-tof-reco-workflow ' + getDPL_global_options(nosmallrate=False)
    workflow['stages'].append(TOFRECOtask)
 
-   TOFTPCMATCHERtask = createTask(name='toftpcmatch_'+str(tf), needs=[TOFRECOtask['name'], TPCRECOtask['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"])
+   TOFTPCMATCHERtask = createTask(name='toftpcmatch_'+str(tf), needs=[TOFRECOtask['name'], TPCRECOtask['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"], mem='1000')
    TOFTPCMATCHERtask['cmd'] = 'o2-tof-matcher-tpc ' + getDPL_global_options()
    workflow['stages'].append(TOFTPCMATCHERtask)
 
-   MFTRECOtask = createTask(name='mftreco_'+str(tf), needs=[det_to_digitask["MFT"]['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"])
+   MFTRECOtask = createTask(name='mftreco_'+str(tf), needs=[det_to_digitask["MFT"]['name']], tf=tf, cwd=timeframeworkdir, lab=["RECO"], mem='1500')
    MFTRECOtask['cmd'] = 'o2-mft-reco-workflow ' + getDPL_global_options(nosmallrate=False)
    workflow['stages'].append(MFTRECOtask)