status: Running
last update: 27 February 2012

This page is a record of the configuration and execution of the P202 reprocessing project, full reprocessing from DIGIs using Pass7 analysis code. This project involves reprocessing with Pass7 classification trees and new IRFs. This task will read DIGI files and emit RECON, MERIT, GCR and CAL ROOT files, and the standard array of FITS files. It will be a CPU-intensive and storage-intensive enterprise requiring months of elapsed time and of order 1 Pbyte of storage. At the time of this task beginning, there will be about 20,000 science runs in Fermi (3.5 years accumulation).

To avoid occupying a new 1 PB of disk space, the plan is to remove old RECON files once they have been reprocessed. This is a shell game that involves some amount of buffer space and then waiting until the new RECON file has been created and (to some extent) validated before removal. The old RECON files will be retained on tape in the HPSS system and they will be available via xroot (but with some delay as these large files are staged in).

The name "P202" derives from the word "processing" and the initial file version to be used for the output data products, e.g., r0123456789_v202_merit.root.

"New generation" tasks (using SCons, OO and common python scripts, etc.)

• P202-ROOT - This task reads DIGI and produces reprocessed RECON + CAL + GCR + MERIT + FILTEREDMERIT (photons) + ELECTRONMERIT

• P202-FITS - This task reads MERIT and produces FT1 (photons) + EXTENDEDFT1 + LS1 (merit-like FITS file for photons) + EXTENDEDLS1 + ELECTRONFITS file

  Datafile names, versions and locations

Data file version numbers for this reprocessing will begin with v202.

XROOT location and file naming

Location template:

/glast/Data/Flight/Reprocess/<reprocessName>/<dataType>

Locations for P202:

/glast/Data/Flight/Reprocess/P202/recon
/glast/Data/Flight/Reprocess/P202/cal
/glast/Data/Flight/Reprocess/P202/gcr
/glast/Data/Flight/Reprocess/P202/merit
/glast/Data/Flight/Reprocess/P202/filteredmerit
/glast/Data/Flight/Reprocess/P202/electronmerit
/glast/Data/Flight/Reprocess/P202/ft1
/glast/Data/Flight/Reprocess/P202/extendedft1
/glast/Data/Flight/Reprocess/P202/electronft1
/glast/Data/Flight/Reprocess/P202/ls1
/glast/Data/Flight/Reprocess/P202/extendedls1

File naming:

Note: 'procVer' is a field added to the file name (and the keyword "PROC_VER" in the primary header) added to the FFD 5/12/2010. Ref: http://fermi.gsfc.nasa.gov/ssc/dev/current_documents/Science_DP_FFD_RevA.pdf

Examples:

/glast/Data/Flight/Reprocess/P200/recon/r0239557414_v202_recon.root
/glast/Data/Flight/Reprocess/P200/cal/r0239557414_v202_cal.root
/glast/Data/Flight/Reprocess/P200/gcr/r0239557414_v202_gcr.root
/glast/Data/Flight/Reprocess/P200/merit/r0239557414_v202_merit.root
/glast/Data/Flight/Reprocess/P200/filteredmerit/r0239557414_v202_filteredmerit.root
/glast/Data/Flight/Reprocess/P200/electronmerit/r0239557414_v202_electronmerit.root
/glast/Data/Flight/Reprocess/P200/extendedft1/gll_xp_p202_r0239559565_v202.fit
/glast/Data/Flight/Reprocess/P200/ft1/gll_ph_p202_r0239559565_v202.fit
/glast/Data/Flight/Reprocess/P200/electronft1/gll_el_p202_r0239559565_v202.fit
/glast/Data/Flight/Reprocess/P200/extendedls1/gll_xe_p202_r0239559565_v202.fit
/glast/Data/Flight/Reprocess/P200/ls1/gll_ev_p202_r0239559565_v202.fit

DataCatalog location and naming

Logical directory and group template:

Data/Flight/Reprocess/<reprocessName>:<dataType>

Note that the <dataType> field (following the colon) is a DataCatalog 'group' name, and file names are of the form r<run#>.

Naming examples:

Data/Flight/Reprocess/P202:RECON r0239557414
Data/Flight/Reprocess/P202:CAL r0239557414
Data/Flight/Reprocess/P202:GCR r0239557414
Data/Flight/Reprocess/P202:MERIT r0239557414
Data/Flight/Reprocess/P202:FILTEREDMERIT r0239557414
Data/Flight/Reprocess/P202:EXTENDEDFT1 r0239557414
Data/Flight/Reprocess/P202:FT1 r0239557414
Data/Flight/Reprocess/P202:ELECTRONFT1 r0239557414
Data/Flight/Reprocess/P202:EXTENDEDLS1 r0239557414
Data/Flight/Reprocess/P202:LS1 r0239557414

Data Sample

The currently defined data sample for P202 reprocessing includes:

NOTE: One run, 242429468, of type TrigTest was declared 'good for science' but long after this task got started, so it has been intentionally omitted.

[to be continued...]

Bookkeeping

1. (This page): Define ingredients of reprocessing (processing code/configuration changes)
2. Processing History database: http://glast-ground.slac.stanford.edu/HistoryProcessing/HProcessingRuns.jsp?processingname=P202
   1. List of all reprocessings
   2. List of all data runs reprocessed
   3. Pointers to all input data files (-> dataCatalog)
   4. Pointers to associated task processes (-> Pipeline II status)
3. Data Catalog database: http://glast-ground.slac.stanford.edu/DataCatalog/folder.jsp
   1. Lists of and pointers to all output data files
   2. Meta data associated with each output data product

P202-ROOT

Status chronology

• 2/13/2012 - begin trials with final calibration and alignments from Leon; 5 runs reprocessed
• 2/14/2012 - trials continue with blocks of 15, 20, 25 and 50 runs reprocessed (each run generates ~20 batch jobs)
• 2/16/2012 - begin trickleStream production. Initial config:

  ===============================================================================
    TRICKLE PARMS
  ===============================================================================
  task =  P202-ROOT
  maxRuns =  19172
  firstStep =  setupRun
  steps =  [['/processRun processClump', 1500, 20], ['mergeClumps', 70, 1]]
  maxStreamsPerCycle =  20
  timePerCycle =  300
  ===============================================================================
  

• 2/21/2012 - One clump reprocessed with pointer to new mySQL DB (stream 710.0)
• 2/22/2012 - 776 runs complete. Pausing task.
• 3/15/2012 - resume task. New goal is 1-year of data (~5600 runs)
• 3/31/2012 - 1-year complete (5600 runs). DataCatalog summary:

Configuration

Task Location	/nfs/farm/g/glast/u38/Reprocess-tasks/P202-ROOT
Task Status	http://glast-ground.slac.stanford.edu/Pipeline-II/index.jsp
GlastRelease	17-35-24-gr17 (SCons RHEL4-32 build)
Run Selection	based on a modified "standard" selection, see https://confluence.slac.stanford.edu/display/SCIGRPS/Official+LAT+Datasets (((sIntent=="nomSciOps" || sIntent=="nomSO_noSk_noCno_optGccc_allEna" || sIntent=="nomSciOps_diagEna" || (sIntent=="nomSciOps_Emin5MeV"&&RunMin>242070455) || nRun==242429468 ) && (RunQuality != "Bad" || is_null ( RunQuality ) ) ) || sIntent=="nadirOps" )
s/c data	"standard" Public Release 2 https://confluence.slac.stanford.edu/display/SCIGRPS/Official+LAT+Datasets
Input Run List	ftp://ftp-glast.slac.stanford.edu/glast.u38/Reprocess-tasks/P202-ROOT/config/runList.txt
photonFilter	CTBParticleType==1 && ((FT1EventClass & 0x00003EFF)!=0) pass7.6_Extended_cuts_L1 in evtClassDefs
electronFilter	CTBParticleType==1
Code Variants	redhat4-i686-32bit-gcc34 (Optimized)
jobOpts	ftp://ftp-glast.slac.stanford.edu/glast.u38/Reprocess-tasks/P202-ROOT/config/doRecon.txt
Output Data Products	RECON, GCR, CAL, MERIT, FILTEREDMERIT, ELECTRONMERIT

Timing and Scaling

• processClump - with 1300 jobs completed, the average time to run varies by processor type from 220 min (hequ) to 370 min (boer).
  

• mergeClumps - with 42 jobs completed, the average time to run varies by processor type from 5-30 minutes.
  

Load balancing

trickleStream parameters:

P202-FITS

This task generates all desired FITS data products.

Status chronology

• 3/2/2012 - Define block 1 as the 776 runs in P202-ROOT block 1. Configure trickleStream and begin (14:08)
• 3/31/2012 - Define block 2 as 5600 runs. Reconfig trickleStream and begin (18:05)
• 4/01/2012 - Block 2 complete (4824 jobs in about six hours).

Configuration

Task Location	/nfs/farm/g/glast/u38/Reprocess-tasks/P202-FITS
Task Status	http://glast-ground.slac.stanford.edu/Pipeline-II/task.jsp?task=75031156
Input Data	MERIT (direct from P202-ROOT)
spacecraft data	same as P202-ROOT
Input Run List	ftp://ftp-glast.slac.stanford.edu/glast.u38/Reprocess-tasks/P202-FITS/config/runList.txt
evtClassDefs	00-19-04 (6/23/2011)
eventClassMap	EvtClassDefs_P7V6.xml
ScienceTools	09-27-01 (2/15/2012)
Code Variants	redhat5-i686-32bit-gcc41 (Optimized)
Diffuse Model	based on contents of /afs/slac.stanford.edu/g/glast/ground/GLAST_EXT/diffuseModels/v2r0 (see https://confluence.slac.stanford.edu/display/SCIGRPS/Quick+Start+with+Pass+7 )
Diffuse Response	'source' using P7SOURCE_V6 IRF 'clean' using P7CLEAN_V6 IRF
IRFs	P6V7, contained within ScienceTools release
Output Data Products	FT1, LS1, EXTENDEDFT1, EXTENDEDLS1, ELECTRONFT1

Generation of output data products:

[1] /afs/slac/g/glast/ground/releases/volume04/evtClassDefs/00-19-04/data

Note that diffuse response is calculated for 'source' and 'clean' event classes only.

Note on 'Code Variant': The SLAC batch farm contains a mixture of architectures , both hardware (Intel/AMD 64-bit) and software (RHEL5-64, gcc v4.1, etc.). At this time, GlastRelease builds only on RHEL4-32, while ScienceTools builds for RHEL5-32, RHEL5-64.

Timing