Hi,
I use G4UIRoot which is a gui to use Geant4 inside Root. I have a graphical window which i use to set parameters for running Geant4. When i start the run in the graphical window, i have the foollowing message :
WriteBuffer for class: TNamed version 1 has written 7889 bytes
WriteBuffer, class:TStreamerInfo, name=fCheckSum, fType[1]=13, TStreamerBasicType, bufpos=7920, arr=0xbfff9ad8, offset=28
WriteBuffer, class:TStreamerInfo, name=fClassVersion, fType[2]=3, TStreamerBasicType, bufpos=7924, arr=0xbfff9ad8, offset=32
WriteBuffer, class:TStreamerInfo, name=fElements, fType[3]=64, TStreamerObjectPointer, bufpos=7928, arr=0xbfff9ad8, offset=84
WriteBuffer, class:TStreamerBase, name=TStreamerElement, fType[0]=0, TStreamerBase, bufpos=7975, arr=0xbfff96c8, offset=0
WriteBuffer, class:TStreamerElement, name=TNamed, fType[0]=67, TStreamerBase, bufpos=7981, arr=0xbfff9408, offset=0
WriteBuffer, class:TNamed, name=TObject, fType[0]=66, TStreamerBase, bufpos=7987, arr=0xbfff9248, offset=0
WriteBuffer, class:TNamed, name=fName, fType[1]=65, TStreamerString, bufpos=7997, arr=0xbfff9248, offset=12
WriteBuffer, class:TNamed, name=fTitle, fType[2]=65, TStreamerString, bufpos=8004, arr=0xbfff9248, offset=20
WriteBuffer for class: TNamed version 1 has written 7981 bytes
Then Geant4 starts its run.
What does this message means?
The time between i start the run in the graphical window and Geant4 really starts its run is very long. Can i reduce it?
Thanks,
Fabien
[quote] WriteBuffer for class: TNamed version 1 has written 7889 bytes
WriteBuffer, class:TStreamerInfo, name=fCheckSum, fType[1]=13, TStreamerBasicType, bufpos=7920, arr=0xbfff9ad8, offset=28[/quote]
This message are informative message that appears only if gDebug set to any value greater than 0. This can happens if you have the shell variable ROOTDEBUG set.
This is likely an issue with the Geant4 startup.
Cheers,
Philippe.