Displaced Global Muon Reconstruction

[prbbing]

Here it is the first implementation of the Global Displaced Muon Reconstruction.

It introduced displaced racking sequences and all the changes are located in the RecoMuon package.

[cmsbuild]

A new Pull Request was created by @prbbing (bingxuan liu) for CMSSW_7_4_X.

Displaced Global Muon Reconstruction

It involves the following packages:

RecoMuon/Configuration
RecoMuon/MuonIdentification
RecoTracker/FinalTrackSelectors

@cmsbuild, @cvuosalo, @nclopezo, @slava77 can you please review it and eventually sign? Thanks.
@ghellwig, @battibass, @makortel, @abbiendi, @GiacomoSguazzoni, @rovere, @VinInn, @appeltel, @bellan, @gpetruc, @cerati, @rociovilar, @trocino, @dgulhan, @bachtis, @venturia this is something you requested to watch as well.
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[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

-1
Tested at: 5cc3367
When I ran the RelVals I found an error in the following worklfows:
140.53 step2

runTheMatrix-results/140.53_RunHI2011+RunHI2011+RECOHID11+HARVESTDHI/step2_RunHI2011+RunHI2011+RECOHID11+HARVESTDHI.log
----- Begin Fatal Exception 03-Feb-2015 23:08:47 CET-----------------------
An exception of category 'FatalError' occurred while
   [0] Processing run: 182124 lumi: 40 event: 1893722
   [1] Running path 'reconstruction_step'
   [2] Calling event method for module MuonIdProducer/'earlyDisplacedMuons'
Exception Message:
Failed to get input track collection with label: InputTag:  label = earlyGeneralTracks, instance = 
----- End Fatal Exception -------------------------------------------------

you can see the results of the tests here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7531/2331/summary.html

[cvuosalo]

+1

For #7531 5a602b8

Adding displaced muon reconstruction sequences.

Code changes are satisfactory.

Jenkins tests CMSSW_7_4_X_2015-02-04-0200 show only minor differences related to other PRs, because Jenkins did not use the original IB (CMSSW_7_4_0_pre6) this PR was derived from.

Extended tests with workflows 1313.0 and 25202.0 show no significant differences from baseline. The new sequences add about 140 ms / event processing time and about 2600 bytes to the size of each event (which is less than 1% of the total size) for both RECO and AODSIM. These changes were expected from the report of the developers to the Jan. 29, 2015, Reco meeting.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_4_X IBs unless changes (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @ktf, @smuzaffar

[davidlange6]

+1