GlueX Weekly Softwae Meeting
Feb. 15, 2005

Attendees: David L. Elliott W. Nokolay K. Zisis P. Joachim K.
           Richard J. Matt B. Vardan G. Paul E. Simon T. Mark I.
			  Ed B.
			  

Agenda:

1. Report on SURA Grid Workshop, Atlanta,  Jan.5-7, 2005 (Nikolay Kolev)
http://www.phys.uregina.ca/halld/software/GridNotes.html

2. Recent Modifications to HDGeant Geometry (Richard Jones)

3. Cmsg publish/subscribe system (Elliott Wolin)

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1. Nikolay discussed some of the programs presented at the SURA
   Grid Workshop that took place in Atlanta last January. Univ. 
	of Regina intends to start testing some of the packages locally
	but not in the very immediate future as they have some other
	projects to complete first.
	
	There was a little discussion on what security requirements
	GlueX will need for GRID tools. We will not likely have the same
	needs as the industry driven packages. However, out needs may
	still benefit from their solutions.
	
	Sandy Philpot is organizing a seminar sometime in March to review
	the jlab work in this area. It is intended to present what is 
	available now and what will be as the field develops in the near
	future. This will be a good way for JLab users to keep in sync
	(and contact) with the Computer Center personel working in this area.
	

2. Richard reported on several upgrades/modifications to HDGeant.
   These were derived from a list of requests that Richard has collected
	since last December. Here are a few notes:
	
  - Cheat tag for distinguishing primary vs. secondary tracks
  - 4-D cheat tags (some used to be only 2-D or 3-D)
  - (Gas) Cherenkov segmentation
  - Errors in CDC angle of stereo layers and cheat code ids fixed
  - TOF geomety/segmentation
  - Still no UPV model
  - Still no DIRC model
  - Consistency with Ravi's drawings checked. Values entered into
    spreadsheet which has been uploaded to the portal.
  - Target package is not fully detailed. The outer edge is in
    with some guess for the skin thickness
  - No forward plane of start counter (only 40 element barrel).

3. Elliott announced the availability of the new Cmsg system from
   the JLab DAQ group. He had sent out a couple of messages to the
	mailing list before but wanted to remind everyone that is now available
	and they are eager to find applications in which to test it.
	Cmsg is a general use publish/subscribe networked messaging system
	which will be used extensively in the next generation DAQ software
	being developed by the JLab DAQ group.