RE: [ROOT] Pythia6 business.

From: Valeri Fine (fine@bnl.gov)
Date: Tue Jul 22 2003 - 23:54:38 MEST


Hello Rene
Why that tar contains TWO copies of the Pythia?
    Valeri


> -----Original Message-----
> From: owner-roottalk@pcroot.cern.ch
[mailto:owner-roottalk@pcroot.cern.ch]
> On Behalf Of Rene Brun
> Sent: Tuesday, July 22, 2003 5:27 PM
> To: Nick van Eijndhoven
> Cc: Rene Brun; ROOT discussion group
> Subject: Re: [ROOT] Pythia6 business.
> 
> Hi Nick,
> 
> Concerning Pythia6 on windows: if you or a Windows guru
> have time to investigate why pythia62 does not compile
> under Xp with the .NET environment, you can take
>   ftp://root.tar.gz/root/pythia62win.tar.gz
> and try to build the dll/lib using setpythia.bat.
> This used to work under Windows/NT with the previous MS
> Fortran compiler.
> If somebody send me the necessary changes to make this dll,
> I will be happy to include it in the next release.
> 
> Rene Brun
> 
> On Tue, 22 Jul
> 2003, Nick van Eijndhoven wrote:
> 
> > Hi Rene,
> > I get your point, but I don't think it's pure accident that
> > my stuff works under win98.
> > The windows release of ROOT 3.05/06 doesn't have any TPythia6
> > stuff in; what I did was that I saved all the TPythia6 stuff
> > (i.e. all .lib, .dll and corresponding header files like e.g.
> > TPythia6Calls.h, TMCParticle.h etc...) from a previous version
> > 3.04. So as far as I can see, the TPythia6 stuff I have is
intrinsically
> > consistent. This might be the reason that it works correctly.
> >
> > Of course it would be better if the CERNLIB guys brushed up their
> > code such that it compiles also with VC++7.NET so you can again
> > include the pythia stuff in the ROOT binary release as you did
> > upto now for windows.
> >
> > Really, this "built-in pythia generator" in ROOT is a very versatile
> > tool; not only for physics investigations, but also to quickly
> > test and optimise event data structures for large events (like
> > LHC Pb+Pb collisions or cosmic ray interations).
> >
> >                                                  Cheers,
> >                                                   Nick.
> >
> > Rene Brun wrote:
> > > Hi Nick,
> > >
> > > The Pythia libs distributed with ROOT 3.05 CANNOT WORK with Pythia
> 6.1.
> > > You must use Pythia 6.2. In Pythia 6.2 the length of /PyDat3/ has
been
> > > changed from 4000 to 8000 particles. ROOT 3.05 is consistent with
> > > this dimension. See $ROOTSYS/pythia6/inc/TPythia6Calls.h
> > >
> > > The fact that it works with you under Windows98 is purely an
accident,
> > > because Windows prevent communication between common blocks
defined
> > > in separate DLLs. Your program may work if you do not use the
elements
> > > in PyDat3, but even in this case, I would not trust the results.
> > >
> > > Rene Brun
> > >
> > > Nick van Eijndhoven wrote:
> > >
> > >>Dear all,
> > >>Some days ago I saw a mail from somebody who had problems in
setting
> > >>pi0's stable in the TPythia6 generator using one of the recent
ROOT
> > >>releases.
> > >>If I remember well, there was an answer that one can't use
Pythia6.1
> > >>anymore with Root 3.05.
> > >>Obviously I got a bit nervous about such messages, so I took the
> latest
> > >>Root 3.05/06 binaries (gdk version for windows) from the web and
run
> > >>some test on my win98 machine.
> > >>Attached you will find the little script aap.cc and the produced
> output
> > >>aap.log, which shows that everything runs correctly.
> > >>I think the particle code argument to SetMDCY() was wrong in email
> > >>mentioning the problem. It should not be 111, but the 'pythia
> equivalent
> > >>code'.
> > >>The only thing one should do (at least for the windows version) is
> taking
> > >>the TPythia related header files and libs and include them at the
> > >>corresponding locations in your root directory, since they are not
> part
> > >>(for the time being) of the binary Root release.
> > >>However, the ones of the Root 3.04 release work pretty fine.
> > >>In case you want all the TPythia stuff 'ready to copy' into the
root
> > >>directory, you can pickup the TPythia.zip file of my homepage-
> >Download.
> > >>
> > >>                                                       Cheers,
> > >>                                                        Nick.
> > >>
> > >>--
> > >>Dr. Nick van Eijndhoven mailto:nick@phys.uu.nl
> http://www.phys.uu.nl/~nick
> >
>>----------------------------------------------------------------------
> ----
> > >>Org.:    Utrecht University, Faculty of Physics and Astronomy
> > >>Address: Princetonplein 5, NL-3584 CC Utrecht, The Netherlands
> > >>Phone:   +31-30-2532331(direct) +31-30-2531492(secr.)  Fax:
+31-30-
> 2518689
> > >>CERN:    +41-22-7679751(direct) +41-22-7675857(secr.)  Fax:
+41-22-
> 7679480
> > >>Offices: Buys Ballot laboratory Room 710 (Utrecht)   B23 1-020
(CERN)
> >
>>----------------------------------------------------------------------
> ----
> >



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