[Halld-offline] Reconstruction results not consistent

[David Lawrence]

Hi Will,

     I've opened an issue on this in Mantis. Beni and I have 
independently confirmed the issue and I am looking at it now to see if I 
have identify the cause.

Regards,
-David

On 6/28/11 11:24 AM, Will Levine wrote:
> Hi,
> I noticed recently that I've been getting different results when 
> running reconstruction multiple times on the same file. It seems like 
> that for a small number of events, the number of particles 
> reconstructed varies. I think this problem will occur with any input, 
> but I've uploaded one particular hddm file where I've seen the problem 
> (http://www-meg.phys.cmu.edu/wilevine/hdgeant_smeared.hddm ). I think 
> the simplest way to see the problem is to run the reconstruction with 
> the phys_tree plugin twice (i.e.
> hd_root -PPLUGINS=phys_tree hdgeant_smeared.hddm -o output.1.root
> hd_root -PPLUGINS=phys_tree hdgeant_smeared.hddm -o output.2.root
> ) and compare the output. In particular, differences should be seen in 
> the Npip, Nphoton, etc. histograms.
>
> For the record I'm using svn revision 7974 and the problem seems to 
> occur in both SIMD and non-SIMD builds.
>
> If anyone can confirm or diagnose this issue, that would be helpful.
>
> Will
>
>
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