Olivier,

Okay the following:

/afs/cern.ch/user/d/dorney/scratch0/MadGraph/template_gridpack/work/MadGraph5_v1_5_2/bjets_yay/SubProcesses/P3_gg_bbxgg/madevent 

does exists, the output of running it is shown in one of the attachments.

When running 

/afs/cern.ch/user/d/dorney/scratch0/MadGraph/template_gridpack/work/MadGraph5_v1_5_2/bjets_yay/SubProcesses/P3_gg_bbxgg/ajob1

The following output exists:

[lxplus418] ~/scratch0/MadGraph/template_gridpack/work/MadGraph5_v1_5_2/bjets_yay/SubProcesses/P3_gg_bbxgg $ ./ajob1
[lxplus418] ~/scratch0/MadGraph/template_gridpack/work/MadGraph5_v1_5_2/bjets_yay/SubProcesses/P3_gg_bbxgg $ 

So no error message occurs.  How much RAM is generally required?  I could try specifying nodes with only > X MB/GB.

I copied the Template directory into a new directory.  Using the same cards as before, but with only p p > b b~ QED @1 I started another generation with the following output:

[lxplus245] ~/scratch0/MadGraph/template_gridpack/work/MadGraph5_v1_5_2/BBbar_Simple $ ./bin/generate_events testSimpleRun2_1M -f
No module named madgraph.interface.extended_cmd
No module named madgraph
No module named madgraph
************************************************************
*                                                          *
*           W E L C O M E  to  M A D G R A P H  5          *
*                      M A D E V E N T                     *
*                                                          *
*                 *                       *                *
*                   *        * *        *                  *
*                     * * * * 5 * * * *                    *
*                   *        * *        *                  *
*                 *                       *                *
*                                                          *
*         VERSION 5.1.5.2                                  *
*                                                          *
*    The MadGraph Development Team - Please visit us at    *
*    https://server06.fynu.ucl.ac.be/projects/madgraph     *
*                                                          *
*               Type 'help' for in-line help.              *
*                                                          *
************************************************************
load configuration from /afs/cern.ch/user/d/dorney/scratch0/MadGraph/template_gridpack/work/MadGraph5_v1_5_2/BBbar_Simple/Cards/me5_configuration.txt 
load configuration from /afs/cern.ch/user/d/dorney/scratch0/MadGraph/template_gridpack/work/MadGraph5_v1_5_2/input/mg5_configuration.txt 
load configuration from /afs/cern.ch/user/d/dorney/scratch0/MadGraph/template_gridpack/work/MadGraph5_v1_5_2/BBbar_Simple/Cards/me5_configuration.txt 
Using default eps viewer "gv". Set another one in ./input/mg5_configuration.txt
Using default web browser "firefox". Set another one in ./input/mg5_configuration.txt
generate_events testSimpleRun2_1M -f
Will run in mode parton
Generating 1000000 events with run name testSimpleRun2_1M
survey  testSimpleRun2_1M 
compile directory
Using random number seed offset = 48
Running Survey
Creating Jobs
Working on SubProcesses
    P1_gg_bbx 
    P1_qq_bbx 
 Idle: 2 Running: 0 Finish: 0
 Idle: 0 Running: 2 Finish: 0
 Idle: 0 Running: 2 Finish: 0
 Idle: 0 Running: 2 Finish: 0
 Idle: 0 Running: 2 Finish: 0
 Idle: 0 Running: 2 Finish: 0
 Idle: 0 Running: 2 Finish: 0
 Idle: 0 Running: 2 Finish: 0
 Idle: 0 Running: 2 Finish: 0
 Idle: 0 Running: 2 Finish: 0
 Idle: 0 Running: 2 Finish: 0
 Idle: 0 Running: 1 Finish: 1
INFO: All jobs finished 
Start waiting for update on filesystem. (more info in debug mode)
Command "generate_events testSimpleRun2_1M -f" interrupted with error:
IOError : [Errno 2] No such file or directory: '/afs/cern.ch/user/d/dorney/scratch0/MadGraph/template_gridpack/work/MadGraph5_v1_5_2/BBbar_Simple/SubProcesses/P1_gg_bbx/G1/results.dat'
Please report this bug on https://bugs.launchpad.net/madgraph5
More information is found in '/afs/cern.ch/user/d/dorney/scratch0/MadGraph/template_gridpack/work/MadGraph5_v1_5_2/BBbar_Simple/testSimpleRun2_1M_tag_1_debug.log'.
Please attach this file to your report.
quit