GlastRelease moved to Gaudi v21r7-gl1 allowing for RHEL5 builds starting with tag GlastRelease 20-00-00. Validation started with tag 20-03-04, where first the CMT rhel4_gcc34opt build was used as the baseline for the SCons redhat4-i686-32bit-gcc34 Optimized build system tests, where event based random number seeding was used:
http://glast-ground.slac.stanford.edu/SystemTests/?releaseVersionId=13441
Looking at the plots, the main thing I noticed is that the quantity CALRMSTRANS seems to be different in most tests, AG, Muons, Bkg.
I dowloaded the merit files for the allGamma, and compared the merit variable called Cal1TransRms... and they are identical, see plot attached.
I am a bit curious, where does the CALRMSTRANS variable of the systests come from ?
Is that the trans rms of each cluster (not just the first one) before
normalization by the energy, as the units suggests ?
...and why would it be different ?
For other variables in the BackGndMixDC2, the differences seem really small to me, small enough to be ignored... unless someone is willing to dig into the code obviously.
Cheers,
Johan
Next the redhat5-i686-32bit-gcc41 Optimized build was run against the redhat4-i686-32bit-gcc34 Optimized build of GlastRelease-20-03-04:
http://glast-ground.slac.stanford.edu/SystemTests/?releaseVersionId=13461