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Co-authored-by: Benedikt Volkel <benedikt.volkel@cern.ch>
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| title: Anchored MC | ||
| --- | ||
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| # Anchored MC | ||
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| In "anchored" MC simulations, conditions are set to match those during a real data taking run at a given time such as LHC filling scheme, included ALICE detectors, interaction rate etc. | ||
| Anchored MC productions are crucial for physics analyses to have realistic simulated samples. | ||
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| The anchoring procedure is slightly more involved than unanchored MC runs. What we need to achieve is constructing a fitting [workflow similar to the unanchored case](README.md/#workflow-creation). | ||
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| Here is the step-by-step procedure: | ||
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| **Determine reconstruction options and enabled detectors** | ||
| ```bash | ||
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| # create your working directory and change into it | ||
| mdkir ${WORKDIR} | ||
| cd ${WORKDIR} | ||
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| # set run number etc. | ||
| export RUNNUMBER=<run-number> | ||
| export PASS=<pass> | ||
| export PERIOD=<period> | ||
| export BEAMTYPE=<beamtype> | ||
| export RUNNUMBER=<run-number> | ||
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| # copy what needs to be run because we will tweak it in a sec | ||
| cp $O2DPG_ROOT/DATA/production/configurations/asyncReco/async_pass.sh . | ||
| cp $O2DPG_ROOT/DATA/production/configurations/asyncReco/setenv_extra.sh . | ||
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| # set what is necessary in MC | ||
| sed -i 's/GPU_global.dEdxUseFullGainMap=1;GPU_global.dEdxDisableResidualGainMap=1/GPU_global.dEdxSplineTopologyCorrFile=splines_for_dedx_V1_MC_iter0_PP.root;GPU_global.dEdxDisableTopologyPol=1;GPU_global.dEdxDisableGainMap=1;GPU_global.dEdxDisableResidualGainMap=1;GPU_global.dEdxDisableResidualGain=1/' setenv_extra.sh | ||
| # disable running the reco, we will get everything from our MC run | ||
| sed -i '/WORKFLOWMODE=run/d' async_pass.sh | ||
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| # prepare | ||
| export IGNORE_EXISTING_SHMFILES=1 | ||
| touch list.list | ||
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| # this will provide us with the log file as well as workflowconfig.log... | ||
| ./async_pass.sh ${CTF_TEST_FILE:-""} 2&> async_pass_log.log | ||
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| # ...which will now be parsed to yield config-config.json | ||
| ${O2DPG_ROOT}/UTILS/parse-async-WorkflowConfig.py | ||
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| # the following variables of course should be set | ||
| baseargs="-col ${COLSYSTEM} -eCM 5360 -tf ${NTIMEFRAMES} --split-id ${SPLITID} --prod-split ${PRODSPLIT} --cycle ${CYCLE} --run-number ${RUNNUMBER}" | ||
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| remainingargs="-gen pythia8 -proc heavy_ion -seed ${SEED} -ns ${NSIGEVENTS} --include-local-qc --pregenCollContext" | ||
| remainingargs="${remainingargs} -e ${SIMENGINE} -j ${NWORKERS}" | ||
| remainingargs="${remainingargs} -productionTag ${ALIEN_JDL_LPMPRODUCTIONTAG:-local_anchorTest_tmp}" | ||
| # and here comes the config-config.json that we constructed above and contains additional options for DPLs as well as detectors and detector sources etc. | ||
| remainingargs="${remainingargs} --anchor-config config-json.json" | ||
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| # no we create the final workflow that will be digested by the runner | ||
| ${O2DPG_ROOT}/MC/bin/o2dpg_sim_workflow_anchored.py ${baseargs} -- ${remainingargs} &> timestampsampling_${RUNNUMBER}.log | ||
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| # We grep the timestamp in order to be able to pre-fetch some CCDB objects | ||
| TIMESTAMP=`grep "Determined timestamp to be" timestampsampling_${RUNNUMBER}.log | awk '//{print $6}'` | ||
| # this is what we want to fetch | ||
| CCDBOBJECTS="/CTP/Calib/OrbitReset /GLO/Config/GRPMagField/ /GLO/Config/GRPLHCIF /ITS/Calib/DeadMap /ITS/Calib/NoiseMap /ITS/Calib/ClusterDictionary /TPC/Calib/PadGainFull /TPC/Calib/TopologyGain /TPC/Calib/TimeGain /TPC/Calib/PadGainResidual /TPC/Config/FEEPad /TOF/Calib/Diagnostic /TOF/Calib/LHCphase /TOF/Calib/FEELIGHT /TOF/Calib/ChannelCalib /MFT/Calib/DeadMap /MFT/Calib/NoiseMap /MFT/Calib/ClusterDictionary /FT0/Calibration/ChannelTimeOffset /FV0/Calibration/ChannelTimeOffset /GLO/GRP/BunchFilling" | ||
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| # where we cache all CCDB objects | ||
| export ALICEO2_CCDB_LOCALCACHE=$PWD/.ccdb | ||
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| ${O2_ROOT}/bin/o2-ccdb-downloadccdbfile --host http://alice-ccdb.cern.ch/ -p ${CCDBOBJECTS} -d ${ALICEO2_CCDB_LOCALCACHE} --timestamp ${TIMESTAMP} | ||
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| echo "run with echo in pipe" | ${O2_ROOT}/bin/o2-create-aligned-geometry-workflow --configKeyValues "HBFUtils.startTime=${TIMESTAMP}" --condition-remap=file://${ALICEO2_CCDB_LOCALCACHE}=ITS/Calib/Align,MFT/Calib/Align -b | ||
| mkdir -p $ALICEO2_CCDB_LOCALCACHE/GLO/Config/GeometryAligned | ||
| ln -s -f $PWD/o2sim_geometry-aligned.root $ALICEO2_CCDB_LOCALCACHE/GLO/Config/GeometryAligned/snapshot.root | ||
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| ``` | ||
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| Now finally you can run the runner as explained [here](README.md/#workflow-running). |