1. James N. Bellinger University of Wisconsin at Madison 28 July 2010
Code
James N. Bellinger
University of Wisconsin at Madison
28 July 2010
28 July 2010

2. Migration News First stage of migration is complete
Problems as of 9:26 28-July
Build of development on SL5 was delayed
no machine where we can update it directly
Cruft remained from merely moving the old development instead of deleting it
setup python v2_1 complains
CafSubmit generates errors but apparently works anyway except on SL4 where there were kerberos problems
setup cdfsoft2 development does not yet work on ILP SL3
Not sure about remote sites: probably not there either
28 July 2010

3. Postmortem: Subgroup to discuss later
What went wrong?
CafSubmit failure on SL4
development not ready on Wednesday morning
What should have been done better?
I’ve got a little list. Make it longer.
What loose ends are there?
28 July 2010 3

4. Code Speedup valgrind/callgrind works w/ maxopt ProductionExe
14% of time spent in new/malloc/free/delete/strings
9% of time spent in Chebyshev polynomial calculations for silicon: Looks like 2% at least saved if save results instead of recalc each time
String usage is driven by DBCorrector::correctLadderSegment 3.4% ??
CdfTrackHits::class_name 0.5%
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5. Where used? Largest usage in a single routine: chebFit
chebyshev: could call
once and save results
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6. For Subgroup Meeting
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7. What went wrong?
Glitches in final move and build of development versions CafSubmit failed on SL4 What else?
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8. What should have been done better?
Earlier coordination with infrastructure
Timeline for conversion, plan tests as it progressed
Did not start early for testing batch operation
I should have been on this earlier
Needed to shake down as many “tensor elements” of submission as possible; farm location: originating site: file access method
Find CafSubmit expert early on to get it repaired
Spell out all the details
People’s memories differed. My fault
28 July 2010 8

9. What should have been done better: 2?
Physics group tests might have been easier to arrange without ICHEP deadlines
28 July 2010 9

10. Loose Ends We are carrying around python v2_1 Why?
CafSubmit code still needs rework
large task, populate cafutils
Can we simply move the code as is? (modulo logical names)
Atom cluster should use central code server?
Revisit xrootd server issues
Ancient versions are still out there
Non-frontierized remote site submissions
28 July 2010 10