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Asked by Richard Ruiz

Dear MG Team,

I would like to study the process t t~ > h at 100 TeV. However, I am running into a problem with the LHAPDF setup during the first round of phase space integration. Below are my details. Is this a problem with my environment/setup or an issue with the current releases of a one of the programs?

Best Wishes,
Richard

I am using MG5_aMC@NLO 5.2.3.2.2, a fresh installation of LHAPDF v6.1.5 and PDF set 260600 (NNPDF30_nlo_as_0118_nf_6).

My MG commands are:
MG5_aMC>generate t t~ > h
MG5_aMC>output Test_ttBar_h

In my para_card.dat file, I have:
6 0.0000e+00 # MT

In my run_card.dat file, I have:
     50000.0 = ebeam1 ! beam 1 total energy in GeV
     50000.0 = ebeam2 ! beam 2 total energy in GeV
      lhapdf = pdlabel ! PDF set
      260600 = lhaid ! if pdlabel=lhapdf, this is the lhapdf number
 6 = maxjetflavor ! Maximum jet pdg code

My output after running ./bin/generate_events -f is

launch in debug mode
************************************************************
* *
* W E L C O M E to *
* M A D G R A P H 5 _ a M C @ N L O *
* M A D E V E N T *
* *
* * * *
* * * * * *
* * * * * 5 * * * * *
* * * * * *
* * * *
* *
* VERSION 5.2.3.2.2 *
* *
* The MadGraph5_aMC@NLO Development Team - Find us at *
* https://server06.fynu.ucl.ac.be/projects/madgraph *
* *
* Type 'help' for in-line help. *
* *
************************************************************
INFO: load configuration from /.../.mg5/mg5_configuration.txt
INFO: load configuration from /.../Test_ttBar_h/Cards/me5_configuration.txt
INFO: load configuration from /.../input/mg5_configuration.txt
INFO: load configuration from /.../Test_ttBar_h/Cards/me5_configuration.txt
generate_events -f
Generating 10000 events with run name run_01
survey run_01
INFO: compile directory

(process:18308): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
INFO: Using LHAPDF v6.1.5 interface for PDFs
compile Source Directory
Using random number seed offset = 63
INFO: Running Survey
Creating Jobs
Working on SubProcesses
INFO: P0_ttx_h
INFO: Idle: 1, Running: 0, Completed: 0 [ current time: 13h15 ]
terminate called after throwing an instance of 'LHAPDF::UserError'
  what(): Trying to use LHAGLUE set #1 but it is not initialised

Program received signal SIGABRT: Process abort signal.

Backtrace for this error:
#0 0x7F4DAB0DF5F7
#1 0x7F4DAB0DFC3E
#2 0x7F4DAA8132EF
#3 0x7F4DAA813267
#4 0x7F4DAA814EC9
#5 0x7F4DAB45006C
#6 0x7F4DAB44DEE5
#7 0x7F4DAB44DF30
#8 0x7F4DAB44E148
#9 0x4648CD in alphaspdfm_ at LHAGlue.cc:415
#10 0x4649D8 in alphaspdf_ at LHAGlue.cc:423
#11 0x456085 in alphas_
#12 0x41E504 in setclscales_
#13 0x41815E in passcuts_
#14 0x426FB8 in dsigproc_
#15 0x428209 in dsig_
#16 0x43BD19 in sample_full_
#17 0x40B324 in MAIN__ at driver.f:?
ERROR DETECTED
INFO: Idle: 0, Running: 0, Completed: 1 [ 0.17s ]
INFO: Idle: 0, Running: 0, Completed: 1 [ 0.17s ]
INFO: End survey
refine 10000
Creating Jobs
INFO: Refine results to 10000
INFO: Generating 10000.0 unweigthed events.
Error when reading /.../Test_ttBar_h/SubProcesses/P0_ttx_h/G1/results.dat
Command "generate_events -f" interrupted with error:
ValueError : need more than 5 values to unpack
Please report this bug on https://bugs.launchpad.net/madgraph5
More information is found in '/.../Test_ttBar_h/run_01_tag_1_debug.log'.
Please attach this file to your report.
quit
INFO:

INFO:

Question information

Language:
English Edit question
Status:
Needs information
For:
MadGraph5_aMC@NLO Edit question
Assignee:
marco zaro Edit question
Last query:
Last reply:
Revision history for this message
marco zaro (marco-zaro) said :
#1

Hi,
did you ever try to use the same PDF set with other processes (just to be sure nothing is wrong with it?)
what ren/fact scale are you using?
Let me know,

Marco

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