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Efficient Memory Allocation in CMSSW Test Suites

Explore memory allocation efficiencies in CMSSW test suites for high pT QCD events, with detailed breakdowns and comparisons between versions. Findings reveal significant reductions in memory usage and underlying allocation locations.

moses-nixon
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Efficient Memory Allocation in CMSSW Test Suites

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  1. CMSSW tests - 1 • 9.3.p01/CMSSW370p4 high pT QCD 100 events • Total: 864,834,887,229 bytes in 6,346,332,037 allocations • http://cern.ch/cms-service-sdtweb/igperf/vocms81/slc5_amd64_gcc434/370p4/navigator/qcd03_total/ • Self (by allocation location) • http://cern.ch/cms-service-sdtweb/igperf/vocms81/slc5_amd64_gcc434/370p4/navigator/qcd03_total/self G4CPT meeting

  2. CMSSW tests - 2 • 9.3.ref04/CMSSW37X high pT GCD 100 events • Total: 289,668,118,800 bytes in 1,762,370,315 allocations • http://cern.ch/cms-service-sdtweb/igperf/vocms81/slc5_amd64_gcc434/37Xg493ref04/navigator/qcd03_total/ • Self (by allocation location) • http://cern.ch/cms-service-sdtweb/igperf/vocms81/slc5_amd64_gcc434/37Xg493ref04/navigator/qcd03_total/self • Much reduced memory allocations from Bertini and G4NavigationHistory • Largest number of allocations (200M allocations) from G4QNucleus::InitCandidateVector() G4CPT meeting

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