Problem 2340 - Division by zero in FTF stopping
Summary: Division by zero in FTF stopping
Status: RESOLVED WONTFIX
Alias: None
Product: Geant4
Classification: Unclassified
Component: processes/hadronic/stopping (show other problems)
Version: 10.7
Hardware: All All
: P4 major
Assignee: Alberto.Ribon
URL:
Depends on:
Blocks:
 
Reported: 2021-03-01 09:54 CET by Vladimir.Ivantchenko
Modified: 2021-03-11 15:52 CET (History)
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Description Vladimir.Ivantchenko 2021-03-01 09:54:50 CET 
Hello,

there is a problem in continuous test64: http://cdash.cern.ch/testDetails.php?test=7660223&build=64262 

It is reproduced at pcgeant06 with gcc9.2 if random seed = 1614528527, 
it should be set by hand in the test64.cc

The problem is likely here for a long time and may affect LHC experiment productions.


Call Stack:
12: /build/jenkins/workspace/BuildProducts/lib64/libG4run.so
11: /build/jenkins/workspace/BuildProducts/lib64/libG4run.so
10: /lib64/libpthread.so.0
9: /build/jenkins/workspace/BuildProducts/lib64/libG4processes.so : G4FTFAnnihilation::Create2QuarkAntiQuarkStrings(G4VSplitableHadron*, G4VSplitableHadron*, G4FTFParameters*, G4FTFAnnihilation::CommonVariables&) const
8: /build/jenkins/workspace/BuildProducts/lib64/libG4processes.so : G4FTFAnnihilation::Annihilate(G4VSplitableHadron*, G4VSplitableHadron*, G4VSplitableHadron*&, G4FTFParameters*) const
7: /build/jenkins/workspace/BuildProducts/lib64/libG4processes.so : G4FTFModel::ExciteParticipants()
6: /build/jenkins/workspace/BuildProducts/lib64/libG4processes.so : G4FTFModel::GetStrings()
5: /build/jenkins/workspace/BuildProducts/lib64/libG4processes.so : G4VPartonStringModel::Scatter(G4Nucleus const&, G4DynamicParticle const&)
4: /build/jenkins/workspace/BuildProducts/lib64/libG4processes.so : G4TheoFSGenerator::ApplyYourself(G4HadProjectile const&, G4Nucleus&)
3: /build/jenkins/workspace/BuildProducts/lib64/libG4processes.so : G4HadronStoppingProcess::AtRestDoIt(G4Track const&, G4Step const&)
2: /build/jenkins/workspace/tests/test64/test64
1: /lib64/libc.so.6
0: /build/jenkins/workspace/tests/test64/test64
Comment 1 Vladimir.Ivantchenko 2021-03-01 10:37:56 CET 
Hi Dennis,

you may assign this problem to Alberto first, who already look into it.

Cheers,
Vladimir
Comment 2 Alberto.Ribon 2021-03-11 15:47:31 CET 
I have run millions of annihilation at rest with FTFP, but was unable to reproduce any crash. So I can't fix anything.
Comment 3 Vladimir.Ivantchenko 2021-03-11 15:52:48 CET 
Hi Alberto,

have you set random seed to this exact value and run at gcc9.2?

Cheers,
Vladimir