sPHENIX discussion of software

[pinkenburg <pinkenburg AT bnl.gov>]

Hi folks,

looks like the 5 servers didn't make a dent - I see transfer rates of 
500kB/s for a file. The size of the file I am looking at is 12GB which 
means it'll take 4 hours give or take.

In the general meeting I mentioned that the truth info is our biggest 
file and its content is a complete overkill for physics analysis. If we 
ever want a chance to analyze the data the TG's need to come up with a 
solution for their truth info needs - we cannot solve this by increasing 
the number of servers by feasible amounts.

To illustrate this, analyzing this combination:
DST_TRUTH_pythia8_Jet04_3MHz-0000000003-00000.root
DST_TRACK_pythia8_Jet04_3MHz-0000000003-00000.root
DST_CALO_CLUSTER_pythia8_Jet04_3MHz-0000000003-00000.root

is

12GB for the truth file
 2GB for the tracks (not great either)
180MB for the calorimeter

The vast majority of the truth info is hits which nobody cares about in 
analysis.

Chris

--
*************************************************************

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

*************************************************************