Adding fastjet shape correction for analysis in 74x

[rappoccio]

Here is a fastjet "rho-based" shape correction for future analysis releases in 74x.
Currently this is completely disabled by default. Some advances in fastjet contrib
are forthcoming to make this much faster than it currently is. Until then,
this should remain disabled except for expert usage in analyses.

[cmsbuild]

A new Pull Request was created by @rappoccio for CMSSW_7_4_X.

Adding fastjet shape correction for analysis in 74x

It involves the following packages:

RecoJets/JetProducers

@cmsbuild, @cvuosalo, @slava77 can you please review it and eventually sign? Thanks.
@TaiSakuma, @jdolen, @ahinzmann, @yslai, @nhanvtran, @schoef, @mariadalfonso this is something you requested to watch as well.
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@Degano you are the release manager for this.
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[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.

[rappoccio]

Please hold off on the tests, many apologies but the line "use_common_bge_for_rho_and_rhom" should be commented with the version of fastjet in the release. This will be in future fastjet versions.

[cmsbuild]

Pull request #11285 was updated. @cmsbuild, @cvuosalo, @slava77 can you please check and sign again.

[rappoccio]

Apologies again... this is fixed. I accidentally committed my private version with private fastjet.

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: 8a8a9ce
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11285/8134/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11285/8134/summary.html

[cvuosalo]

+1

For #11285 8a8a9ce

Adding Fast Jet shape correction, but disabled by default. There should be no change in standard workflows. The shape correction is intended for expert use by analysts.

The code changes are satisfactory, and Jenkins tests against baseline CMSSW_7_4_X_2015-09-16-1100 show no significant differences, as expected.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_4_X IBs once checked with relvals in the development release cycle of CMSSW (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[davidlange6]

+1