[Rivet] Jimmy stops with CODE 300

[Andy Buckley]

On 26/05/10 17:05, Jonathan Butterworth wrote:
> I misremembered the name, it's NMXHEP, which dimensions the particle 
> array in the HEPEVT common.
> 
> As you are using 6510 it's 4000, if you use 6510.2 it's 10000.
> 
> The recommended value is 10000 for LHC running. I think this may be your 
> problem
> 
> - if your local jimmy build has 10000 then there is an incompatibility. 
> It will depend where you are picking the herwig include file from when 
> you build jimmy.
> 
> - even if they are both consistent and 4000 its possible there is an 
> nchecked overflow somewhere if a rare events exceeds 4000 particles, 
> though I would hope they are all checked!

Thanks Jon, I thought you'd be able to help! I've done a bit of digging,
too, Holger:

First, it's best to take the sources from the Genser packages, I think.
The Jimmy "4.31.2" version used to be the one with the NMXHEP = 10000
build... the ".2" suffix is a bit cryptic, to say the least! Although
now I see  there is a ".3" version as well, and the SLC5 builds have
only been made using this... probably best to take the sources from
there. It'll require a bit of hacking the agile-genser-bootstrap script,
if you're using that.

AGILe uses the NMXHEP variable to set up HepMC, so consistency should be
ensured in that HEPEVT -> HepMC translation, at least!

I've just committed a few changes to the AGILe loader to cope with these
Genser name changes... you'll have to use the AGILe head to be able to
use the ".3" version of JIMMY.

I just tested this new AGILe build against the Genser builds on lxplus,
like this:

agile-runmc HerwigJimmy:6510 --beams=pp:7000 -p PTJIM=5 -p PTMIN=5 -p
JMUEO=0 -n 100k

Got to event 78887, with the .3 JIMMY build, before getting the fatal
300 message and abort. Damn, some more digging required...

Cheers,
Andy

-- 
Dr Andy Buckley
SUPA Advanced Research Fellow
Particle Physics Experiment Group, University of Edinburgh

The University of Edinburgh is a charitable body, registered in
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