[Rivet] Herwig 6.510 and AGILe HepMC issues

[Andy Buckley]

Hi David,

Sorry, I don't have any idea why this wouldn't be working. It should be,
and did it properly the last time that I used Fortran HERWIG (which was
a while ago).

The relevant code is here:
http://agile.hepforge.org/trac/browser/trunk/src/FHerwig/FHerwig.cc#L590

Are you sure that the version of HepMC that was active when you first
built this AGILe module was new enough to have defined the
HEPMC_HAS_CROSS_SECTION macro? If not, this xsec-setting block won't
have been built at all.

Andy


On 31/10/12 22:24, David Bjergaard wrote:
> Hi,
> 
> Was there any resolution to this? Is there any sort of kludge I can use
> to get the cross section calculated and working.
> 
> Thanks,
> 
>     Dave
> 
> Frank Siegert <frank.siegert at cern.ch> writes:
> 
>> Hi David,
>>
>> From the header of the Herwig events that you posted it looks like the
>> cross section is set to infinity:
>>
>> C inf inf
>>
>> This is probably why Rivet refuses to read the events. Now the
>> question is why Agile is not setting this cross section correctly, but
>> since I'm not familiar with Agile, I'll let somebody else comment on
>> that. Could you just try and confirm that Rivet reads this alright if
>> you replace all of the infinite C lines with a dummy like
>>
>> C 100.0 1.0
>>
>> ?
>>
>> Cheers,
>> Frank
>>
>> On 23 October 2012 19:59, David Bjergaard <david.b at duke.edu> wrote:
>>> Hi,
>>>
>>> I'm running a local installation of rivet on my laptop, and I've
>>> installed a handful of generators by hand (the GENSER bootstrap script
>>> didn't work for me).  I can run Pythia6:426 fine, but when I try to run
>>> Herwig:6.510 rivet barfs.  I've uploaded notes on the issue here:
>>> http://hep-atlas.phy.duke.edu/HerwigIssues
>>>
>>> If you need me to reproduce this on lxplus, I can, but I need a few days
>>> since my lxplus account expired and I'm waiting for the paperwork to be
>>> processed before it gets reactivated.
>>>
>>> I'm sorry if this isn't the right channel for reporting bugs, I noticed
>>> that the issue tracker hasn't been updated since 2009, so I wasn't sure
>>> if that was still being watched.
>>>
>>> Cheers,
>>>
>>>     Dave
>>>
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-- 
Dr Andy Buckley, SUPA Advanced Research Fellow
Particle Physics Expt Group, University of Edinburgh

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