[Rivet] Rivetgun and Sherpa 1.1.1

[Andy Buckley]

Holger Schulz wrote:
> Hi!
> 
> 
> Having installed the latest svn versions of rivet and agile yields the 
> following
> error message after calling "rivetgun -h" if the only generator 
> installed is Sherpa 1.1.1 :
> 
>         rivetgun: symbol lookup error: 
> /home/holger/generators/sherpa/1.1.1/lib/SHERPA-MC/libAnalysisTools.so.0: 
> undefined symbol: 
> _ZN6ATOOLS15Getter_FunctionIN8ANALYSIS15Analysis_ObjectENS1_15Argument_MatrixESt4lessISsEED2Ev
> 
> If in addition any other generator is installed too, the 'error message' 
> is just 'segmentation fault'.

Is this problem still there? There's something odd about Sherpa's shared
libraries, so I re-wrote the AGILe dynamic loader to only test that the
library files exist on the first run, and only call "dlopen" for the
particular generator that's being loaded: this might have had an
influence on this sort of error.

I didn't see the error myself, but I do get a segfault from HepMC on the
*second* Sherpa event: looks to me like HepMC isn't handling loop
structures in its graphs properly when deleting, and Sherpa is the only
generator currently highlighting this problem.

Andy

-- 
Dr Andy Buckley
Institute for Particle Physics Phenomenology
Durham University
0191 3343798 | 0191 3732613 | www.insectnation.org