Re: TGeoManager hanging in TBrowser

Dear Rene,

Thanks for looking at this so quickly.

Since it only happens in the GUI, I'm not sure I can get much more specific than what I described before (in the right panel), since I included all of my actions. I haven't been able to reproduce the problem with a macro. I will continue exploring the problem and see if I can narrow it down.

I'm using a root that's been compiled from source, so I will check if there's a compilation problem, or if it's a bad interaction with my window manager (sawfish).

Thanks.

-Clark

On Wed, 2006-05-31 at 21:29 +0200, Rene Brun wrote:
> Hi,
>
> I cannot reproduce your problem.
> I can click on any object on the right pane and draw it, eg
> MasterVolume ->DA->Magnet->LeftCham and view any of the FluxReturn_pv_
> objects.
>
> Could you indicate a very precise sequence of operations to reproduce
> the problem?
>
> Rene Brun
>
>
> Clark McGrew wrote:
> > Hello,
> >
> > I'm running into a problem opening TGeoManager objects using TBrowser.
> > For instance, I save a closed TGeoManager object to an output file using
> > TGeoManager::Export()
> >
> > [build the geometry]
> > gGeoManager->CloseGeometry("di");
> > gGeoManager->Export("ND280Geometry.root");
> >
> > and then open the exported file from the command line and create a
> > browser
> >
> > $ root ND280Geometry.root
> > root [1] new TBrowser
> >
> > If I click through the "All Folders" panel on the left side of the
> > browser, I can browse the geometry without any problems (i.e. double
> > click "ROOT Files", double click "ND280Geometry.root", single click
> > "ND280Geometry") . I get the following messages:
> >
> >
> >> Info in <TGeoManager::CloseGeometry>: Geometry loaded from file...
> >> Warning in <TGeoHMatrix::RegisterYourself>: cannot register without geometry
> >> Info in <TGeoManager::SetTopVolume>: Top volume is t2k. Master volume is t2k
> >> Info in <TGeoManager::CloseGeometry>: Voxelization retrieved from file
> >> Info in <TGeoManager::BuildCache>: --- Maximum geometry depth is 11
> >> --- node ID tracking disabled
> >> Info in <TGeoManager::CloseGeometry>: 47785 nodes/ 318 volume UID's in ND280 Detector Geometry
> >> Info in <TGeoManager::CloseGeometry>: ----------------modeler ready----------------
> >>
> >
> > The warning is a bit disturbing, but seems to be harmless. I can then
> > browse the geometry.
> >
> > However, if I use the "Contents of" window on the right side of the
> > browser, ROOT hangs while using 100% of the CPU, and apparently trying
> > to allocate huge chunks of memory (i.e. double click "ROOT FIles",
> > double click "ND280Geometry.root", double click "ND280Geometry" in the
> > "Contents of /ROOT Files/ND280Geometry.root" panel). There are no error
> > messages or warnings, and the only way I've found to recover is to leave
> > X windows and kill the root.exe process by hand.
> >
> > If anybody has insight on how to track down the problem, or if this is a
> > root bug, help will be very much appreciated!
> >
> > I'm using root 5.10/00c compiled from source on Debian Linux and have
> > placed a ROOT file with a TGeoManager object demonstrating the problem
> > at
> >
> > <http://nngroup.physics.sunysb.edu/~mcgrew/ND280Geometry.root>
> >
> > Thanks you very much in advance for any help.
> >
> > Best Regards,
> >
>

-- 
Clark McGrew                    Univ. at Stony Brook, Physics and Astronomy
<clark.mcgrew_at_stonybrook.edu>   631-632-8299