[Rivet] Fwd: Running RAPGAP with RIVET

[Holger Schulz]

Hi Tim,

I think you need to link also to the objects in the folder
misc and bases51 (vzero is in misc) when you create
librapgap32.so.
Can you give it a try?

Holger


Tim Martin wrote:
> Thanks Andy, Holger.
>
>   
>>> it's _dummy, not _dummies. And the test done to put the generator in the
>>>       
> A little progress, I changed the line I inserted into the old Loder.cc to
>
> baselibs.push_back(GenLibInfo("libpythia6_dummy", "pythia6", "421"));
>
> And we get further! Pythia now initialises, but then
>
> AGILe.Rapgap: INFO  Calling PTIME...
> python: symbol lookup error:
> /afs/cern.ch/user/t/tamartin/scratch0/rapgap/lib/librapgap32.so:
> undefined symbol: vzero_
>
> Full log att.
> Tim.
>
> On 16 April 2010 15:17, Holger Schulz <holger.schulz at physik.hu-berlin.de> wrote:
>   
>> Andy Buckley wrote:
>>     
>>> On 16/04/10 12:01, Tim Martin wrote:
>>>
>>>       
>>>> Hi Andy,
>>>>
>>>> I tried the new Loder.cc reautoconf'd, configured and made. AGILe did
>>>> not then find RAPGAP as an option to run.
>>>>
>>>> Interestingly, I reverted back to r700, re-installed, got the old
>>>> error back then added the one line below
>>>>
>>>> baselibs.push_back(GenLibInfo("libpythia6", "pythia6", "421"));   //L361
>>>> baselibs.push_back(GenLibInfo("libpythia6_dummies", "pythia6",
>>>> "421"));  //L362 - Tim addition
>>>>
>>>> Once more, after compilation, rapgap was not found.
>>>>
>>>>         
>>> I probably arsed up how the rapgap library finding is done. In
>>> particular, I think my rewrite hack would have been looking for
>>> .../32/.../librapgap.so rather than librapgap32.so. I'm in a training
>>> course all day with virtually no internet access (this is a 15 min
>>> coffee break!)... Holger, can you try my hacked version and make it work
>>> for you again?
>>>
>>>       
>> Ok I will try and tell you when it's done. I will be stuck in a meeting
>> and won't be able to work on that until 6pm CERN time.
>>
>> Holger
>>     
>>> Then Tim can try adding the libpythia6_dummy finding line again. Note:
>>> it's _dummy, not _dummies. And the test done to put the generator in the
>>> list is just checking to see if those libraries can be *found*, not that
>>> they successfully load and cover all symbol requirements: we used to do
>>> the latter, but it introduced a very subtle problem! So that you're not
>>> getting a RapGap variant in the list with my hack implies that my hack
>>> is not looking for the right path to the Rapgap library... Holger can (I
>>> hope) fix that. That adding the _dummies line to r700 makes Rapgap
>>> disappear from the gens list is because the library isn't called
>>> *_dummies!
>>>
>>>
>>>       
>>>> I'm getting...
>>>>
>>>> nm -CD libpythia6.so | grep pytime
>>>> U pytime_
>>>>
>>>> nm -CD libpythia6_dummy.so | grep pytime
>>>> 00000000000016a0 T pytime_
>>>>
>>>> nm librapgap32.so | grep pytime
>>>> *nothing*
>>>>
>>>>         
>>> Okay, so Rapgap doesn't contain this dummy function. I think
>>> libpythia_dummy needs to be loaded as well: Holger didn't notice this
>>> because he has a version of the Pythia library which already contains
>>> all the dummy functions, but the Genser libs do not.
>>>
>>>
>>>       
>>>> As for running rapgap without AGILe, it produces a few event summaries
>>>> (I presume it will output all with changes to steering) along with all
>>>> the other assorted MC output (~tamartin/public/rapgapout), I tried
>>>> piping it straight into rivet and manually snipping out the event
>>>> summaries bit and running over the file but both times just says:
>>>>
>>>> streaming input: end of stream found setting badbit.
>>>> Failed to initialise on event file -
>>>>
>>>>         
>>> Yeah, it's not writing HepMC -- that's why it can't be read in. You
>>> could hack Rapgap itself to write out HepMC, but that would involve
>>> getting familiar with Fortran/C++ intercommunication, which is exactly
>>> the convenience problem that AGILe is meant to solve. So let's
>>> persevere: I think it shouldn't take much longer!
>>>
>>> Andy
>>>
>>>
>>>       
>>     
>
>
>
>   
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