sPHENIX discussion of software

[Chris Pinkenburg <pinkenburg AT bnl.gov>]

Hi folks,

we decided to allocate 32 bits for the detector id (the old layer 
number) instead of 8 we had before. It's mainly for ease of use dealing 
with 2 ints rather than an arbitrary split (we needed only 25 bits for 
the 20mio spacal fibers but we definitely won't create more then 4B hits 
in a single detector).

When the ongoing build is finished in 10 minutes reading old DSTs with 
the updated libraries will give strange results (the detector id will 
always be 0 but you'll get really large hit ids). This is accompanied by 
changes in phool which don't affect reading DSTs but you will have to 
recompile all private code against the new version of our libraries.

The macros for the hcals have changed a bit so you need to fetch an 
updated version of the G4_HcalIn_ref.C and G4_HcalOut_ref.C in,

Chris

--

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Christopher H. Pinkenburg      ; pinkenburg AT bnl.gov

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

http://www.phenix.bnl.gov/~pinkenbu/

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