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Hi Will, David,<br>
I duplicated what you see. I look for each event how many photons
are reconstructed. the result is<br>
shown in the two attached files. The diff_sidebyside.dat file shows
for each event the number of<br>
reconstructed photons on the left for the first reconstruction on
the right for the second reconstruction.<br>
the diff.dat file contains only those event where a difference is
found. This should help for further<br>
debuging.<br>
<br>
cheers,<br>
Beni<br>
<br>
<blockquote
cite="mid:BANLkTim16RMnf20vDoWTF+XEQZCFx7bpwA@mail.gmail.com"
type="cite">Hi,<br>
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 (<a moz-do-not-send="true"
href="http://www-meg.phys.cmu.edu/wilevine/hdgeant_smeared.hddm">http://www-meg.phys.cmu.edu/wilevine/hdgeant_smeared.hddm</a>
). I think the simplest way to see the problem is to run the
reconstruction with the phys_tree plugin twice (i.e.<br>
<span style="font-family: courier new,monospace;">hd_root
-PPLUGINS=phys_tree hdgeant_smeared.hddm -o output.1.root</span><br
style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">hd_root
-PPLUGINS=phys_tree hdgeant_smeared.hddm -o output.2.root</span><br>
) and compare the output. In particular, differences should be
seen in the Npip, Nphoton, etc. histograms.<br>
<br>
For the record I'm using svn revision 7974 and the problem seems
to occur in both SIMD and non-SIMD builds.<br>
<br>
If anyone can confirm or diagnose this issue, that would be
helpful.<br>
<br>
Will
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