[Gate-users] Segfault using voxelized volumes as phantom

[MELISSAS Maximilien (SAFRAN)]

Dear Gaters,



When I run CT simulation using a voxelized volume as phantom, I get a random segfault (Sometimes it occurs before when computing the first projection, sometimes when computing the tenth...)
I am using gate 6.2 within the VGate 2.1 virtual machine. and tried with several volumes (simple and realistics ones)
Here is the gdb stack.   Is this issue known (and has-it been solved in the next version ? )



#### FrameID = 0 ####

Program received signal SIGSEGV, Segmentation fault.
0x081b86c5 in GateVolumeSelector::GateVolumeSelector(G4VPhysicalVolume*) ()
(gdb) bt
#0  0x081b86c5 in GateVolumeSelector::GateVolumeSelector(G4VPhysicalVolume*) ()
#1  0x081b9379 in GateVolumeID::GateVolumeID(G4TouchableHistory const*) ()
#2  0x08201cbd in GateToImageCT::RecordStepWithVolume(GateVVolume const*, G4Step const*) ()
#3  0x082ac8ff in GateOutputMgr::RecordStepWithVolume(GateVVolume const*, G4Step const*) ()
#4  0x082b9cad in GateSteppingAction::UserSteppingAction(G4Step const*) ()
#5  0xb7c0049f in G4SteppingManager::Stepping() ()
   from /usr/local/lib/libG4tracking.so
#6  0xb7c0a24e in G4TrackingManager::ProcessOneTrack(G4Track*) ()
   from /usr/local/lib/libG4tracking.so
#7  0xb7c35625 in G4EventManager::DoProcessing(G4Event*) ()
   from /usr/local/lib/libG4event.so
#8  0xb7c35f5a in G4EventManager::ProcessOneEvent(G4Event*) ()
   from /usr/local/lib/libG4event.so
#9  0xb7c9a05b in G4RunManager::DoEventLoop(int, char const*, int) ()
   from /usr/local/lib/libG4run.so
#10 0xb7c99b43 in G4RunManager::BeamOn(int, char const*, int) ()
   from /usr/local/lib/libG4run.so
#11 0x0838ee76 in GateApplicationMgr::StartDAQ() ()
#12 0x083af7e0 in GateApplicationMgrMessenger::SetNewValue(G4UIcommand*, G4String) ()
#13 0xb6140958 in G4UIcommand::DoIt(G4String) ()
---Type <return> to continue, or q <return> to quit---
   from /usr/local/lib/libG4intercoms.so
#14 0xb6156e8e in G4UImanager::ApplyCommand(char const*) ()
   from /usr/local/lib/libG4intercoms.so
#15 0xb6157565 in G4UImanager::ApplyCommand(G4String) ()
   from /usr/local/lib/libG4intercoms.so
#16 0xb6131015 in G4UIbatch::ExecCommand(G4String const&) ()
   from /usr/local/lib/libG4intercoms.so
#17 0xb6132337 in G4UIbatch::SessionStart() ()
   from /usr/local/lib/libG4intercoms.so
#18 0xb615297e in G4UImanager::ExecuteMacroFile(char const*) ()
   from /usr/local/lib/libG4intercoms.so
#19 0xb614bb59 in G4UIcontrolMessenger::SetNewValue(G4UIcommand*, G4String) ()
   from /usr/local/lib/libG4intercoms.so
#20 0xb6140958 in G4UIcommand::DoIt(G4String) ()
   from /usr/local/lib/libG4intercoms.so
#21 0xb6156e8e in G4UImanager::ApplyCommand(char const*) ()
   from /usr/local/lib/libG4intercoms.so
#22 0xb6157565 in G4UImanager::ApplyCommand(G4String) ()
   from /usr/local/lib/libG4intercoms.so
#23 0xb6131015 in G4UIbatch::ExecCommand(G4String const&) ()
   from /usr/local/lib/libG4intercoms.so
#24 0xb6132337 in G4UIbatch::SessionStart() ()
   from /usr/local/lib/libG4intercoms.so
---Type <return> to continue, or q <return> to quit---
#25 0xb615297e in G4UImanager::ExecuteMacroFile(char const*) ()
   from /usr/local/lib/libG4intercoms.so
#26 0xb614bb59 in G4UIcontrolMessenger::SetNewValue(G4UIcommand*, G4String) ()
   from /usr/local/lib/libG4intercoms.so
#27 0xb6140958 in G4UIcommand::DoIt(G4String) ()
   from /usr/local/lib/libG4intercoms.so
#28 0xb6156e8e in G4UImanager::ApplyCommand(char const*) ()
   from /usr/local/lib/libG4intercoms.so
#29 0xb6157565 in G4UImanager::ApplyCommand(G4String) ()
   from /usr/local/lib/libG4intercoms.so
#30 0x080fe4ca in main ()

Thanks for your time,

Maximilien



--

Maximilien MELISSAS, Ph.D

Consultant, Alten technology

Image processing and simulation for CT NDT @ Safran R & T

http://www.alten.com
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