Port FastSim to pythia8 180

[ktf]

This completes #2090 for what concerns compilation issues.

[cmsbuild]

A new Pull Request was created by @ktf (Giulio Eulisse) for CMSSW_7_1_X.

Port FastSim to pythia8 180

It involves the following packages:

FastSimulation/ParticleDecay

@cmsbuild, @Degano, @giamman, @lveldere, @nclopezo can you please review it and eventually sign? Thanks.
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@ktf you are the release manager for this.
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[ktf]

@mkirsano there is still a link issue, because it's apparently missing libpythia8tohepmc.so. Should it have been built?

[ktf]

@vciulli @bendavid

[ktf]

BTW, this is critical and it's a showstopper for 71X pre1. If it will not be fixed I'll revert your changes and we go with pre1 and the old pythia8.

[ktf]

@davidlange6

[lveldere]

As far as I understood, this will not work out of the box, at least not properly.
I'm contacting Mojtaba, who has been working on replacing pythia 6 with 8, and update you asap.

[lveldere]

From a private conversation with Andrea,
I understood this is nothing more than changing some paths.
Effectively, pythia6 will still be used for the decays in fastsim. Is that right?

[davidlange6]

sorry - why is this change coupled to the pythia8 version change?

On Jan 22, 2014, at 9:54 AM, Giulio Eulisse notifications@github.com
wrote:

BTW, this is critical and it's a showstopper for 71X pre1. If it will not be fixed I'll revert your changes and we go with pre1 and the old pythia8.

—
Reply to this email directly or view it on GitHub.

[ktf]

sorry - why is this change coupled to the pythia8 version change?

Because FastSimulation/PartonDecay uses pythia8, apparently, which had
it's include files moved around and has an apparently has an incomplete
set of libraries.

[mkirsano]

Hello,
This library should appear after the change of pythia8 version in cmsdist instead of libhepmcinterface. The library name was changed between 176 and 180.
About pythia8 includes in other parts of CMSSW I did not check. All pythia8 includes are to be changed: Pythia8/ to be added to the paths.
Should I check FastSim part or somebody else can do this?
Cheers, Mikhail

---

From: Giulio Eulisse [notifications@github.com]
Sent: 22 January 2014 09:52
To: cms-sw/cmssw
Cc: Mikhail Kirsanov
Subject: Re: [cmssw] Port FastSim to pythia8 180 (#2123)

@mkirsanohttps://github.com/mkirsano there is still a link issue, because it's apparently missing libpythia8tohepmc.so. Should it have been built?

—
Reply to this email directly or view it on GitHubhttps://github.com//pull/2123#issuecomment-33002952.

[ktf]

Ok, I rebuilt pythia8 and now the library is there. Not sure what has happened. I'll merge these changes and schedule a new IB, using the correct pythia8.