R.Dubois Sim/Recon Overview 1/10 GLAST LAT ProjectSoftware Workshop 15-18 July, SLAC Sim/Recon Overview Elements of Simulation/Reconstruction Development,

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Presentation transcript:

R.Dubois Sim/Recon Overview 1/10 GLAST LAT ProjectSoftware Workshop July, SLAC Sim/Recon Overview Elements of Simulation/Reconstruction Development, Validation & Checking Areas Needing Attention

R.Dubois Sim/Recon Overview 2/10 GLAST LAT ProjectSoftware Workshop July, SLAC Flow in Gleam

R.Dubois Sim/Recon Overview 3/10 GLAST LAT ProjectSoftware Workshop July, SLAC Development Model Standard tools –cvs, CMT, Visual Studio/gcc Release Manager –“continuous integration” –Nightly builds of release-in-progress and release-to-come “tag early and often” –Latest tags are tested together –HEAD is ignored Packages expected to –Compile and link –Unit test run –Flagged if either fail! –System Tests Run for each Release ~8 configurations of Gleam producing ~80 histograms each Tracked in database; web viewable with comparisons to previous releases – attempting to auto-flag changes

R.Dubois Sim/Recon Overview 4/10 GLAST LAT ProjectSoftware Workshop July, SLAC Validation and Checking Last official performance validation was ~Nov 2002 for Gleam v3 release CAL & TKR geometry reviews done in June 2003 –See Leon’s talk Sources validated this spring in Analysis Group Heaviest-duty checking at the moment is from Bill Atwood in the process of doing PSF, Aeff and bkg studies G4 – a long story! –See Francesco’s talk

R.Dubois Sim/Recon Overview 5/10 GLAST LAT ProjectSoftware Workshop July, SLAC Areas Needing Attention - 1 Sources –Are we in a position to generate a day’s data? Able to break up day into segments Able to insert transient sources Point sources? –No known problems with background sources –See Toby’s talk Particle Transport –Need to re-do Tune’s EM physics validation of G4 –Look at hadronic physics –Look at heavy ion physics –Need test suite and good contact with G4 team for ongoing use –See Francesco’s talk

R.Dubois Sim/Recon Overview 6/10 GLAST LAT ProjectSoftware Workshop July, SLAC Areas Needing Attention - 2 Geometry –CAL still has updates to make –ACD needs validation! –See Leon’s talk Digitization –Update CAL for EM data results on light taper and calibration functional forms –Complete TKR merge of Bari/Simple Digis; incorporate any new EM knowledge Recon –Continuing CAL work on energy leakage and crack corrections (using Bill’s currently) –Event shape analysis and shower up/down determination –Incorporation of event classification, ID and interpretation –Output of Level 1 information

R.Dubois Sim/Recon Overview 7/10 GLAST LAT ProjectSoftware Workshop July, SLAC Areas Needing Attention - 3 Validation –We are still discovering errors –Need to include diagnostics from Bill’s end-use work –System Tests Need an iteration on the initial plots More bulletproof method of flagging changes Someone to champion the system! –Will at least partially be responsibility of new SciProg hire at SLAC –Very few eyes looking at Gleam! –We should also review unit tests to ensure they are useful Documentation –GlastRelease/Gleam User Guides etc are aging. –They need to be spruced up – and maybe another iteration –See Heather’s talk

R.Dubois Sim/Recon Overview 8/10 GLAST LAT ProjectSoftware Workshop July, SLAC Areas Needing Attention - 4 Infrastructure –We are still suffering with memory leaks in Root I/O Ursula in Paris to restart looking this week –Randoms seeding seems to have broken Need new owner now that Karl has left; Xin volunteering –We still have no user gui for post-Gleam event analysis We have possible head-start with a Root gui, but have not been able to apply manpower to it Pipeline –OPUS pipeline looks promising, but we now need source code to adapt to our dataset database and batch system –Have not been able to get our hands on the code –Will try bringing in bigger guns to help goose the system

R.Dubois Sim/Recon Overview 9/10 GLAST LAT ProjectSoftware Workshop July, SLAC Upcoming Disruptions The usual run of upgrades –We ought to be able to change to gcc 3.2 shortly Requires new Gaudi Alex has set up test bed Should be seamless this time –Visual.Net as default Seems to be ready now Transition to.Net 2003 not ready –New CMT is out with some nice features Toby is trying them out –When to do these?

R.Dubois Sim/Recon Overview 10/10 GLAST LAT ProjectSoftware Workshop July, SLAC Summary Still need to finish off the chain of event interpretation post current Recon Major challenge is validation and checking –Need to better foster verifying that things are correct and that changes don’t break the system –Need to predict what we will need for DC1 operationally and test it before we need it Good examples are reprocessing lots of events and examining them in the Event Display –Will maintain a TODO list from the Workshop to start addressing this