RECO Status Report - November, 2002

Status of releases

• p13
  • p13 is a part of the "Overall Goals for the Experiment". The following milestones were established:
    • p13.00.00 - built on schedule.
    • p13.02.00 - built and installed on the farms on schedule.
  • Current Status.
  • Current performance.
  • Known problems.
  • New features coming.

Recent progress:

• p13.02.00 began processing data on Tuesday, November 5, 2002.
• p13.02.00 RECO Monte Carlo certification samples have been generated.

Major outstanding problems / issues:

• There are a few production related problems with p13.02.00 RECO:
  • Data farms report approximately 10% of files crash. Two sources have been found, and fixes are scheduled for p13.03.00 (November 12, 2002).
  • MC farms and data farms report occasional "infinite loops". One source has been found, and a fix is scheduled for p13.03.00.
• The Monte Carlo muon geometry installed in p12 (and also in p13) was changed with the intent to be the surveyed geometry. p13 RECO was modified to support this geometry. Unfortunately, an error was made in the d0gstar geometry such that it is not correct. Corrections to both d0gstar and RECO geometries are required.
• The solenoid field is shifted in RECO by 1cm from it's nominal position. Additional evidence supports that the field is in the wrong place for data reconstruction. A proposal to fix this in p13.04.00 is under consideration.
• We have not yet deployed access to the detector calibration databases.
  • Issues needing testing:
    • Memory requirements.
    • Server reliability.
• There is a critical need to develop an Event based Error chunk, that can keep track of things like fatal unpacking errors. This information also needs to be propogated to the TMB. This is one of the projects previously advertised.

Ongoing projects:

• Calorimeter - A task force is studying the issue of the calorimeter zero-suppression threshold (online, Level 3 and offline).
• Investigation into physical dependences of packages has started, with the goal of reducing the memory required to link an analysis executable.
• Discussions to make more direct connection between TMB and TMB Tree objects is underway. Proposal to ID / Physics groups has been sent.
• RECO Monitoring tasks - Currently nine people have volunteered and are working on the two advertised RECO monitoring projects, however the level of effort has to date been rather low. There are many additional aspects of these projects that need volunteers.
• Chunk documentation - Currently three people have volunteered and others are participating, however the convergence rate is rather slow. More people are needed.
• An effort is underway to reduce the memory required for RCP (by about 80 MB) and the time required to load (from several minutes to tens of seconds). Version one deployed in t02.38.00.

This page maintained by Harry Melanson