GeantChecklist
Introduction
So much of the understanding of the performance of mu2e depends on simulation studies that a change in geant version could have far-reaching effects. This page contains a checklist for tests to perform before moving to a new geant. Typically, some tests would be skipped because the expert decides the effort to validate would not be justified for the low level of risk.
v4_10_4 EMZ
Started Mar 21, 2018, proposed update to v4_10_4 EMZ from v4_10_2_p03e.
How to trigger Mu2e specific electromagnetic option4 (_EMZ) with modified msc model transition energy (committed 3/16/18)
physics.producers.g4run.debug.diagLevel : 1 # the above is to see the ranges printed physics.producers.g4run.physics.modifyEMOption4 : true physics.producers.g4run.physics.physicsListName : "ShieldingM_EMZ"
How to change the stepper to the new one requiring fewer field evaluations (off, except where noted):
physics.producers.g4run.physics.stepper : "G4DormandPrince745"
clhep 2.4.0.0 (not used yet) will enable the switch from HepJamesRandom to MixMax random number engine (art sets the default)
Results from tests, 1M conversion electrons, 300K beam stage1
| Sample | CPU (s) | MEM (GB) | file size (MB) |
| old beam | 7325 | 1.76 | 630 |
| new beam | 7896(+8%) | 1.79(+2%) | 718(+13%) |
| old CE | 6844 | 1.75 | 92088 |
| new CE | 7099(+4%) | 1.84(+5%) | 187456(+100%) |
beam stage 1 comparison
CE comparison
stops
Why are conversion electron files so much larger:
arProductsizes:
old:
Size Size/Entry Fraction Data Product Name
505449709 50545.0 0.548 mu2e::SimParticlemv_g4run__ceSimReco.
240938209 24093.8 0.261 mu2e::StepPointMCs_g4run_calorimeter_ceSimReco.
30774582 3077.5 0.033 mu2e::CaloShowerSteps_CaloShowerStepFromStepPt_calorimeter_ceSimReco.
28011825 2801.2 0.030 mu2e::StepPointMCs_g4run_tracker_ceSimReco.
new:
Size Size/Entry Fraction Data Product Name
514208625 51420.9 0.277 mu2e::SimParticlemv_g4run__ceSimReco.
745787106 74578.7 0.402 mu2e::StepPointMCs_g4run_calorimeter_ceSimReco.
236050707 23605.1 0.127 mu2e::CaloShowerSteps_CaloShowerStepFromStepPt_calorimeter_ceSimReco.
181788056 18178.8 0.098 mu2e::StepPointMCs_g4run_tracker_ceSimReco.
| Sign off | Responsible | Topic | Notes |
| 3/21/18 | Krzysztof | release notes presented | talk |
| 3/14/18 | Krzysztof | supporting code (new lists, options) | changes enabling new features done in February and March |
| Ray | high-stats conversion electrons comparison | see links above | |
| Ray | high-stats beam stage 1 comparison | see links above | |
| Ray/Krzysztof | CPU time and product sizes | see above | |
| Ray/Andrei | stopped muon rates and shape | see link above | |
| Rob | magnetic field transport | ||
| Dave (LBL) | tracker charge deposition/hit resolution | talk | |
| Dave (LBL) | tracker background hit rates | ||
| Dave (LBL) | tracker integrated charge | ||
| Dave (LBL) | tracker electronics radiation | ||
| Bertrand | calorimeter resolution | ||
| Bertrand | calorimeter electronics radiation | ||
| Ralf | CRV light model | ||
| Yuri | neutron production rates and transport | ||
| Yuri | CRV deadtime | ||
| Dave (LBL) | conversion electron efficiency | ||
| Jim | STM efficiency | ||
| Jim | STM background | ||
| Andrei | ExtMon efficiency | ||
| Andrei | ExtMon background | ||
| Ralf | cosmic background | ||
| Bob | p-bar background | ||
| Andrei | beam electron background | ||
| Dave (Lou) | Pion backgrounds |
v4_10_4
Started Mar 1, 2018, proposed update to v4_10_4 from v4_10_2_p03e. Effort paused on 3/21/18 - now working on v4_10_4 EMZ
How to trigger Mu2e specific electromagnetic option4 (_EMZ) with modified msc model transition energy (committed 3/16/18), off by default, on where noted.
physics.producers.g4run.debug.diagLevel : 1 # the above is to see the ranges printed physics.producers.g4run.physics.modifyEMOption4 : true physics.producers.g4run.physics.physicsListName : "ShieldingM_EMZ"
How to change the stepper to the new one requiring fewer field evaluations:
physics.producers.g4run.physics.stepper : "G4DormandPrince745"
clhep 2.4.0.0 (not used yet) will enable the switch from HepJamesRandom to MixMax random number engine (art sets the default)
Results from tests, 1M conversion electrons, 300K beam stage1
| Sample | CPU (s) | MEM (GB) | file size (MB) |
| old beam | 9351 | 1.611 | 6.290 |
| new beam | 8483 (-9%) | 1.715 (+6%) | 6.397(+2%) |
| old CE | 6795 | 1.742 | 918.396 |
| new CE | 6180 (-9%) | 1.804 (+4%) | 909.979(-1%) |
beam comparison
C.E. comparison
stopped muons
| Sign off | Responsible | Topic | Notes |
| Krzysztof | release notes presented | available | |
| 3/14/18 | Krzysztof | supporting code (new lists, options) | changes enabling new features done in February and March |
| Ray | high-stats conversion electrons comparison | see links above and talk | |
| Ray | high-stats beam stage 1 comparison | see links above and talk | |
| Ray/Krzysztof | CPU time and product sizes | see above and talk | |
| Ray/Andrei | stopped muon rates and shape | see links above and talk | |
| Rob | magnetic field transport | ||
| Dave (LBL) | tracker charge deposition/hit resolution | ||
| Dave (LBL) | tracker background hit rates | ||
| Dave (LBL) | tracker integrated charge | ||
| Dave (LBL) | tracker electronics radiation | ||
| Bertrand | calorimeter resolution | ||
| Bertrand | calorimeter electronics radiation | ||
| Ralf | CRV light model | ||
| Yuri | neutron production rates and transport | ||
| Yuri | CRV deadtime | ||
| Dave (LBL) | conversion electron efficiency | ||
| Jim | STM efficiency | ||
| Jim | STM background | ||
| Andrei | ExtMon efficiency | ||
| Andrei | ExtMon background | ||
| Ralf | cosmic background | ||
| Bob | p-bar background | ||
| Andrei | beam electron background | ||
| Dave (Lou) | Pion backgrounds |