IPP Progress Report for the week 2009.11.02 - 2009.11.06

(Up to IPP Progress Reports)

Eugene Magnier

Heather Flewelling

Bill Giebink

• Jury duty Monday
• Spent a small amount of time on realtest.
• Did further study and preparation for starting DB replication.
• Got Josh's arclog.pl script running to collect Areca RAID card logs from nodes.
• Started parsing of logs to isolate read errors.
• RMA'd two boxes of WD drives.
• Started looking into buildtest and psLib TAP test failures.

Paul Price

• Dual convolution (branches/pap)
  • Merged into trunk (rr25999,26000)
  • Ran on 4 diffs from ThreePi_SouthernRegion with DUAL=T,

SPATIAL.ORDER=0. Some strange results for a small subset of skycells; otherwise good.

• Some bad subtractions, clearly identifiable with chi² > 100! One

has 25453.6! Cannot fix merely by increasing ITER.

• Softening errors produces nice behaviour --- fixed!
• Some sources show up in the subtraction that should be masked ---

fixed.

• Happy with dual convolution again, pending testing on a few

exposures.

• Stacking (branches/pap): investigating rejection behaviour
  • Completed rework of combinePixels
  • On each rejection pass, throw out only the most variant pixel;

change iterations parameter to iterations per input.

• Happy with behaviour of stacking (r26011):
  • 4 inputs from stack_id = 14006 (the Draper stack)
  • stack_id = 25532 (full Draper stack from more recent warps)
• Would benefit from threading the creation of the fake images

• Moved TEMP.DIR from ppStack recipe to site configuration; updated

production version

Bill Sweeney

• Modified the distribution tasks to spread the bundles over multiple hosts to improve performance.
• Split up distribution bundle processing script into two pieces so that it can be used by the postage stamp server for 'get_image' requests.
• Worked with Gene analyzing faults and fixing problems uncovered in the throughput tests. (some of these problems were introduced by the previous two tasks. Sorry..
• Fixed a couple of postage stamp bugs reported by Ken Smith.
• Spent some time doing research into techonologies for creating the real web interface to the postage stamp server
• Ran simtest and fixed some bugs found there.
• Looked at the results of the backround restore program. Found out that compression is not appropriate for the background model file. Turned it off in the file rules.
• Marked trac tickets assigned to bill that have been fixed to fixed.

Chris Waters