[Rivet] problems with RivetGun/Alpgen

[Andy Buckley]

On 09/04/10 10:24, Holger Schulz wrote:
> Hi Peter,
> 
> to my knowledge, RivetGun does not exist anymore,
> the wiki page hasn't been updated for more than three years.

Yes, that's right: sorry about the wiki page... I'll update that today
(hopefully...)

> Rivet is completely independent of any generator libraries now.
> You will need agile to steer your (FORTRAN) generator and
> rivet to analyse the HepMC output coming from agile.

Right. You can make this HepMC output any way you like -- AGILe is just
a convenient way to do that for some Fortran generators.

> I haven't run AlpGen with Rivet but the usual way
> to go is to run agile with Alpgen to get the HepMC
> output and feed it to Rivet using a fifo file buffer (create it
> via mkfifo hepmc.fifo).
> 
> So your commandline should look somehting like this:
> 
>     agile-runmc AlpGenFpythiaVERSION -o hepmc.fifo -n 10000 & rivet
>     hepmc.fifo -a ALEPH_1991_S2435284 -H output.aida

AlpGen is one of the stranger interfaces because it requires a parameter
to tell it where to find the AlpGen input parton-level event files. I've
never used the interface personally: maybe Jon, Giulio or someone else
who has used (and wrote!) that interface can comment. (It would be
useful if we had an AGILe wiki page specifically on the AlpGen interface
to explain how it is to be used.)

Andy

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