sPHENIX tracking discussion

[pinkenburg <pinkenburg AT bnl.gov>]

Hi folks,

the average time per event which is printed out in the logs keeps 
sending us down some rabbit holes in terms of seeming disagreements 
which were likely caused by a few odd evens distorting the average. I 
just committed a module which extracts the time on an event by event 
basis and dumps the results into a TTRee so you can actually see the 
underlying distribution. It is based on the CDBTTree class which made 
coding this up a lot simpler. I attach the timing of FPHSimpleKFProp for 
AuAu for 300 events, since it's a TTree you can apply cuts and using the 
event number (IID) identify anomalous events for further testing.

I added a little blurb how to instrument this in our wiki:
https://wiki.sphenix.bnl.gov/index.php/Tools#Module_event_by_event_timing_measurement

This didn't make it into today's build, but tomorrow it should be 
available (don't forget that the sphenix setup script now defaults to 
ana, you need to explicitly source it with new)

Chris


--
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Christopher H. Pinkenburg       ;    pinkenburg AT bnl.gov
                                ;    http://www.phenix.bnl.gov/~pinkenbu

Brookhaven National Laboratory  ;    phone: (631) 344-5692
Physics Department Bldg 510 C   ;    fax:   (631) 344-3253
Upton, NY 11973-5000

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