[Halld-offline] Update on non-deterministic event reconstruction

[Beni Zihlmann]

Hi David,
I did check your latest code change and do not see any difference in 
reconstruction between two
successive runs of hd_root for any type of particle. Seems all is peachy 
again ;-)

-Beni
>
> Hi All,
>
>     I believe I have fixed the non-deterministic issue with the 
> reconstruction first identified by Will L. at CMU some weeks ago. I 
> can give more details at the next offline meeting. In the meantime, if 
> anyone wanted to confirm the problem is gone using the current trunk, 
> that would be appreciated.
>
> -Dave
>
> -------- Original Message --------
> Subject: 	r8077 - trunk/sim-recon/src/libraries/TRACKING
> Date: 	Sat, 16 Jul 2011 00:17:58 -0400
> From: 	Hall-D.SVN.Repository at jlab.org
> To: 	davidl at jlab.org, brash at pcs.cnu.edu, wolin at jlab.org, 
> zisis at uregina.ca, mashephe at indiana.edu, remitche at indiana.edu, 
> zihlmann at jlab.org, somov at jlab.org, staylor at jlab.org, 
> kmoriya at indiana.edu, pmatt at jlab.org
>
>
>
> Author: davidl
> Date: 2011-07-16 00:17:58 -0400 (Sat, 16 Jul 2011)
> New Revision: 8077
>
> Modified:
>     trunk/sim-recon/src/libraries/TRACKING/DReferenceTrajectory.cc
> Log:
> Store last_phi in overloaded DistToRT method of DReferenceTrajectory. The lack of this was causing non-deterministic behavior because the particle ID would fail due to lack of matching to outer detectors. Apparently random behavior due to DReferenceTrajectory objects being reallocated occasionally for pool(?).
>
>
>
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