New pixel sim link

[wmtford]

This PR does for the pixels what PR 4678 does for the strips: enables (and uses in the hitAssociator) direct access to the simHits via the PixelDigiSimLinks. (See my presentation at the July 11 Simulation meeting, https://indico.cern.ch/event/329213/.) The change for the pixels is a little deeper than for the strips, since until now the pixel simLinks never supported simHit pointers, CFposition(). The size of a simlink thus grows from 16 to 20 byates.

[cmsbuild]

A new Pull Request was created by @wmtford for CMSSW_7_2_X.

New pixel sim link

It involves the following packages:

SimDataFormats/TrackerDigiSimLink
SimTracker/Common
SimTracker/SiPixelDigitizer
SimTracker/TrackerHitAssociation

@cmsbuild, @civanch, @Degano, @mdhildreth, @nclopezo can you please review it and eventually sign? Thanks.
@GiacomoSguazzoni, @rovere, @VinInn, @dkotlins, @cerati, @threus, @venturia this is something you requested to watch as well.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.

[cmsbuild]

+1
Tested at: f9b17f2
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4711/383/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4711/383/summary.html

[civanch]

@wmtford, I believe that in TrackerHitAssociator.cc line 143
for (size_t i=0; i<simtrackid.size(); ++i)
should be commented. It is likely has no effect on results.

[wmtford]

@civanch Yes, fixed with my last one-line commit. Thanks.

[cmsbuild]

Pull request #4711 was updated. @cmsbuild, @civanch, @Degano, @mdhildreth, @nclopezo can you please check and sign again.

[cmsbuild]

+1
Tested at: 40dcf99
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4711/393/summary.html

[cmsbuild]

Pull request #4711 was updated. @civanch, @mdhildreth can you please check and sign again.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4711/393/summary.html

[civanch]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_2_X IBs unless changes (tests are also fine).