[Halld-offline] Fwd: non-reproducibility study

[Sean Dobbs]

Hi all,

I checked out and built a clean version with the new tags and am now seeing
consistent results when running with one thread and 4 threads.


---Sean


On Thu, Mar 13, 2014 at 2:37 PM, Mark Ito <marki at jlab.org> wrote:

> Still seeing differences of the same ilk as previously reported.
>
> On 03/13/2014 02:31 PM, Mark Ito wrote:
> > I've re-tagged to reflect this change: tags/sim-recon-2.5 .
> >
> > On 03/13/2014 02:12 PM, Simon Taylor wrote:
> >> I have checked in some changes to the tracking code that appear to
> >> address the valgrind errors mentioned below.
> >>
> >> Simon
> >>
> >> On 03/12/2014 03:59 PM, Matthew Shepherd wrote:
> >>> Having just spent many frustrating hours hunting down my own separate
> non-deterministic bug I was motivated to run hd_dump -DTrackWireBased
> through valgrind.
> >>>
> >>> The error below seems suspicious and could result in non-determinstic
> behaviour, although valgrind is known to generate "errors" where there are
> none.  I didn't have time to look at the code since I have to run to
> another meeting, but thought I would pass it on.
> >>>
> >>> Matt
> >>>
> >>>
> >>> ==7443== Conditional jump or move depends on uninitialised value(s)
> >>> ==7443==    at 0x88F769:
> DTrackFitterKalmanSIMD::KalmanForwardCDC(double, DMatrix5x1&, DMatrix5x5&,
> double&, unsigned int&) (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x8926C4:
> DTrackFitterKalmanSIMD::ForwardCDCFit(DMatrix5x1 const&, DMatrix5x5 const&)
> (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x89762A: DTrackFitterKalmanSIMD::KalmanLoop() (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x898315: DTrackFitterKalmanSIMD::FitTrack() (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x84B8CB:
> DTrackFitter::FindHitsAndFitTrack(DKinematicData const&,
> DReferenceTrajectory const*, jana::JEventLoop*, double, int, double,
> DetectorSystem_t) (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x8C25D7: DTrackWireBased_factory::DoFit(unsigned int,
> DTrackCandidate const*, DReferenceTrajectory*, jana::JEventLoop*, double)
> (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x8C4803:
> DTrackWireBased_factory::evnt(jana::JEventLoop*, int) (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x6C8F38:
> jana::JFactory<DTrackWireBased>::Get(std::vector<DTrackWireBased const*,
> std::allocator<DTrackWireBased const*> >&) (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x6C97EC: jana::JFactory<DTrackWireBased>*
> jana::JEventLoop::GetFromFactory<DTrackWireBased>(std::vector<DTrackWireBased
> const*, std::allocator<DTrackWireBased const*> >&, char const*,
> jana::JEventLoop::data_source_t&, bool) (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x6C9A84: jana::JFactory<DTrackWireBased>*
> jana::JEventLoop::Get<DTrackWireBased>(std::vector<DTrackWireBased const*,
> std::allocator<DTrackWireBased const*> >&, char const*, bool) (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x6CA153: jana::JFactory<DTrackWireBased>::GetNrows()
> (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>> ==7443==    by 0x571A39: MyProcessor::evnt(jana::JEventLoop*, int) (in
> /home/fs1/mashephe/gluex/my_src/bin/Linux_CentOS6-x86_64-gcc4.4.6/hd_dump)
> >>>
> >>>
> >> _______________________________________________
> >> Halld-offline mailing list
> >> Halld-offline at jlab.org
> >> https://mailman.jlab.org/mailman/listinfo/halld-offline
>
> --
> Mark M. Ito, Jefferson Lab, marki at jlab.org, (757)269-5295
>
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>




-- 
Sean Dobbs
Department of Physics & Astronomy
Northwestern University
phone: 847-467-2826
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