PYTHIA8, Error detected in 'launch auto'

Asked by Joonbin Lee

Hi,

I have a problem when I use PYTHIA8. Here is my error message.

#############################################
INFO: Events generated
reweight -from_cards
decay_events -from_cards
INFO: Preparing MCatNLO run
INFO: Compiling MCatNLO for PYTHIA8...
 USING PYTHIA 8, version < 8.200
make: *** No rule to make target '/home/joonblee/CMSSW_8_0_3_patch1/src/pythia8186/lib/archive/libpythia8tohepmc.a', needed by 'Pythia8'. Stop.
Pythia8 compilation did not succeed, exiting

Error detected in "launch auto "
write debug file /home/joonblee/CMSSW_8_0_3_patch1/src/MG5_aMC_v2_5_1/bin/dyellell0j_5f_NLO_FXFX-pythia/run_01_tag_1_debug.log
If you need help with this issue please contact us on https://answers.launchpad.net/mg5amcnlo
aMCatNLOError : Compilation failed, check /home/joonblee/CMSSW_8_0_3_patch1/src/MG5_aMC_v2_5_1/bin/dyellell0j_5f_NLO_FXFX-pythia/mcatnlo.log for details
quit
#################################################

I append 'mcatnlo.log' file.

#################################################
 USING PYTHIA 8, version < 8.200
make: *** No rule to make target '/home/joonblee/CMSSW_8_0_3_patch1/src/pythia8186/lib/archive/libpythia8tohepmc.a', needed by 'Pythia8'. Stop.
Pythia8 compilation did not succeed, exiting
#################################################

It's weird that the log is only 4 lines, but it's all. I think this error maybe caused by
1) I use pythia8186 which is old version.
2) I use the command '> set pythia8_path /home/joonblee/CMSSW_8_0_3_patch1/src/pythia8186 ' to set the pythia8.
What do I do to solve this problem? Please help me.

Thank you.

Best regards,
joonblee

Question information

Language:
English Edit question
Status:
Solved
For:
MadGraph5_aMC@NLO Edit question
Assignee:
Paolo Torrielli Edit question
Solved by:
Paolo Torrielli
Solved:
Last query:
Last reply:
Revision history for this message
Valentin Hirschi (valentin-hirschi) said :
#1

Notice that you can also try to use a locally installed Pythia8 (if that's acceptable for your production), installed directly with MG5aMC using:

MG5_aMC> install pythia8

Revision history for this message
Best Paolo Torrielli (paolo-torrielli) said :
#2

Dear Joonbin,

you really should use Pythia >= 8.210. This is highly recommended for non-FxFx
samples, and mandatory for FxFx samples.

Further information can be found on the webpage

http://amcatnlo.web.cern.ch/amcatnlo/ ->
Help and FAQs ->
Special settings for the parton shower ->
Inclusive samples and merging different parton/jet multiplicities (FxFx merging)

Cheers.
Paolo

Revision history for this message
Joonbin Lee (joonblee) said :
#3

Thanks Paolo Torrielli, that solved my question.