GLAST LAT Project
Gamma-ray Large
Area Space
Telescope
GLAST Large Area Telescope
WBS 4.1.D SAS
LAT Monthly Managerfest
Richard Dubois
LAT SAS Subsystem Manager
LAT Monthly Apr 14 2004 - SAS
1
GLAST LAT Project
March - April Accomplishments
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Flight Integration Support front and center
– Current version of GlastRelease under test by I&T
– System tests under construction; unit tests on LDFreader
– Investigating bug/issues tracker to have in time to support config control
of SAS tools
– Working with Eduardo on delivery of calibration algorithms (end May)
– Agreement from subsystems on update of geometry doc.
– Calibration update user interface on track
OPUS pipeline
– Database updating code done
– Now working on batch interface/monitoring
– One week slip expected to 1st week May
Refocused SciTools architecture design post DC1
– First iteration of architecture done
– Developer walkthrough held last week
Starting HEASARC Network Monitoring with SLAC Computing Center
– Now identified machine inside HEASARC to do file transfer tests
• Thanks to Al Vernacchio for intervention!
– Will provide long term understanding of file transfer speeds and
reliability
– Ground Systems proposing FastCopy as commercial tool for transfer
• We offered SLAC’s bbcp as an alternative to consider
LAT Monthly Apr 14 2004 - SAS
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GLAST LAT Project
Getting to End of May
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I&T stuff ready to try
– Sim/recon, calib algs and infrastructure, pipeline
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Investigating new technology for next iterations of major infrastructure
products
– Application servers; web services; Java; Enterprise Java Beans etc
– In widespread commercial use; passed us by
• SLAC data server
• OPUS pipeline
• Release Manager
• System Tests
– System tests are being used as proof of principle
• “traditional” implementations of the others will be supported for I&T
with transitions when sensible/transparent
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Get bug/issues tracker in place
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Initiate users windows server at SLAC
LAT Monthly Apr 14 2004 - SAS
3
GLAST LAT Project
Key Milestones
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End May – first delivery of SAS tool to I&T
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Early June – kickoff I&T Analysis Workshop
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Mid (?) July – 2nd Analysis workshop
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Aug 4 – ISOC CDR
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Aug 17-18 - GSDR
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September - first hardware data analysis
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Early 2005 – DC2 (depends on Flight Int work load)
LAT Monthly Apr 14 2004 - SAS
4
GLAST LAT Project
Issues & Concerns
 Delivery of calibration algorithms
 Working with subsystems to make sure an adequate set happens
 OPUS operating (have 3 weeks float to end May deadline)
 Should be plenty of float for actual hardware
 ScienceTools taking back seat; prep for DC2 will be harder if Flight
Int takes significantly more resources
 Need to know what support is needed from SAS for NRL env testing;
Spectrum Astro, KSFC. “Porta-farm”?
 Need to start ramping up compute resources at SLAC next FY
 Is there money?
LAT Monthly Apr 14 2004 - SAS
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