Core Minutes 23 August 2005

Long discussion about recent allGamma and Background Monte Carlo running experience, what we need to proceed with the first 100M background sample, and where we wish to go in the near future before the second 100M background sample.

CURRENT STATUS

There have been several recent attempts to generate 2M allGamma and 10M background (pdr) datasets. Some fraction of the runs crash (segmentation violation). See, for example, allGamma-GR-HEAD1.622 and backgndavgpdr-GR-HEAD1.622, of which 5% and 19% of the runs failed, respectively.

Julie reports failures in the recent system tests. She and Toby to look for causes.

Heather and others have been working to fix bugs and add new functionality. Toby reports fixes/improvements to CalRecon, AnalysisNtuple, code to ease background source running from environmental variables. Some of this work is in the most recent new tag: GR-v7r0p1.

A 5M event run of allGamma based on this new release (v7r0p1) was started last night and will be evaluated and announce(http://confluence.slac.stanford.edu/display/DC2/Processing+Summary)

later today. 10M background events based on this code will also be generated sometime today once the allGammas are certified.

Early look at the v7r0p1 indicates there are still some problems, such as:

* seg faults (even without core dumps)

* memory leak(s)

* Heather reports a bug in CalValsTool::calculate

NEW CODE

There is also new code being considered for inclusion prior to the 100M event background run, including ~8 ACD geometry packages from

Joanne. But Joanne is out of town for another week... Experts seemed to think that more testing was needed before this code was used in

production, such as hermiticity and digi tests.

BACKGROUND MODEL

Toby continues to run his DC2 background model at U.Washington. Richard made a quick attempt to produce these events at SLAC but not

yet with success. There are some details with the job options to be worked out. Richard and Tom have discussed and the latter will work

with Toby to see if this can be commissioned soon. This first test task is called CrTotalMix-GR-HEAD1.622 and is still ongoing.

THE PLAN

* There is some urgency to get 100M background events produced ASAP

* More work on v7r0p1 needed ==> new release for 100M run

* New ACD code is not yet ready for prime time, but should be tested in parallel [will need a tag for this testing to proceed]

* Continue to use old "PDR" background model for the moment, but pursue getting Toby's code to work at SLAC

Core Minutes 8/23/2005