MadGraph5_aMC@NLO

Large number of particles in final state -> Fortran compile errors?

Asked by Chris Brust

Hey all,

   I have a model file generated in FeynRules. I'm attempting to generate events with this model in MG5 1.5.7. It appears to work fine provided there aren't too many particles in the final state. When there are, generate_events is giving Fortran compile errors. For example, including this:

generate p p > t1 t1~, (t1 > b Ch, (Ch > l+ vl Ne, (Ne > b~ b~ s~ W-, W- > l- vl~))), (t1~ > b~ Ch~, (Ch~ > l- vl~ Ne~, (Ne~ > b b s W+, W+ > l+ vl))) @1

generates error messages. newprocess_mg5 runs just fine, and draws correct-looking Feynman diagrams, but generate_events produces the following:

Generating 50000 events with run name run_01
survey run_01
compile directory
run_card missed argument asrwgtflavor. Takes default: 5
/home/chris/Documents/School/Software/MadGraph5_v1_5_7/uddrpv/bin/internal/ufomodel/particles.py
write ./param_card.dat
Error detected in sub-command generate_events
write debug file /home/chris/Documents/School/Software/MadGraph5_v1_5_7/uddrpv/run_01_stop_debug.log
If you need help with this issue please contact us on https://answers.launchpad.net/madgraph5
MadGraph5Error : A compilation Error occurs when trying to compile /home/chris/Documents/School/Software/MadGraph5_v1_5_7/uddrpv/Source.
 The compilation fails with the following output message:
     gfortran -O -w -ffixed-line-length-132 -c -o gen_ximprove.o gen_ximprove.f
     gfortran -O -w -ffixed-line-length-132 -c -o ranmar.o ranmar.f
     gfortran -O -w -ffixed-line-length-132 -c -o rw_routines.o rw_routines.f
     gfortran -O -w -ffixed-line-length-132 -c -o open_file.o open_file.f
     gfortran -O -w -ffixed-line-length-132 -o ../bin/internal/gen_ximprove gen_ximprove.o ranmar.o rw_routines.o open_file.o
     gen_ximprove.o: In function `write_gen_':
     gen_ximprove.f:(.text+0xe3d): relocation truncated to fit: R_X86_64_PC32 against symbol `to_split_' defined in COMMON section in gen_ximprove.o
     gen_ximprove.f:(.text+0x10fc): relocation truncated to fit: R_X86_64_PC32 against symbol `max_np_' defined in COMMON section in gen_ximprove.o
     gen_ximprove.o: In function `write_gen_grid_':
     gen_ximprove.f:(.text+0x296f): relocation truncated to fit: R_X86_64_PC32 against symbol `max_np_' defined in COMMON section in gen_ximprove.o
     gen_ximprove.f:(.text+0x2d7f): relocation truncated to fit: R_X86_64_PC32 against symbol `max_np_' defined in COMMON section in gen_ximprove.o
     gen_ximprove.o: In function `write_bash_':
     gen_ximprove.f:(.text+0x439a): relocation truncated to fit: R_X86_64_PC32 against symbol `max_np_' defined in COMMON section in gen_ximprove.o
     gen_ximprove.f:(.text+0x444a): relocation truncated to fit: R_X86_64_PC32 against symbol `max_np_' defined in COMMON section in gen_ximprove.o
     gen_ximprove.o: In function `MAIN__':
     gen_ximprove.f:(.text+0x4f55): relocation truncated to fit: R_X86_64_PC32 against symbol `max_np_' defined in COMMON section in gen_ximprove.o
     gen_ximprove.f:(.text+0x5146): relocation truncated to fit: R_X86_64_PC32 against symbol `to_split_' defined in COMMON section in gen_ximprove.o
     gen_ximprove.f:(.text+0x5150): relocation truncated to fit: R_X86_64_PC32 against symbol `max_np_' defined in COMMON section in gen_ximprove.o
     gen_ximprove.f:(.text+0x5b8b): relocation truncated to fit: R_X86_64_32S against `.bss'
     gen_ximprove.f:(.text+0x5bd5): additional relocation overflows omitted from the output
     collect2: ld returned 1 exit status
     make: *** [../bin/internal/gen_ximprove] Error 1

 Please try to fix this compilations issue and retry.
 Help might be found at https://answers.launchpad.net/madgraph5.
 If you think that this is a bug, you can report this at https://bugs.launchpad.net/madgraph5
quit

Some googling lead me to believe that this error is related to the size of the program being compiled. Do you have any insight about how I could run such a process/get around such error messages?

Thank you very much! Chris

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Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#1

Hi,

In principle adding the following tag -mcmodel=medium in the list of compilation flag (in the files Source/make_opts)
might help you to compile.

Otherwise you can also try to see if this is compiling when your start mg5 with the following command:
set group_subprocesses False
If so, I can give you access to branch where you can parametrize more deeply the grouping.

Cheers,

Olivier

Revision history for this message
Chris Brust (cpbrust) said : 		#2

Olivier,

   Thank you for the suggestions! However, new complaints arose. When I just added -mcmodel=medium, I got the following:

Generating 50000 events with run name run_01
survey run_01
compile directory
run_card missed argument asrwgtflavor. Takes default: 5
/home/chris/Documents/School/Software/MadGraph5_v1_5_7/uddrpv/bin/internal/ufomodel/particles.py
write ./param_card.dat
Using random number seed offset = 24
Running Survey
Creating Jobs
Working on SubProcesses
    P1_gg_t1t1x_t1_bch_ch_lvlne_ne_bxbxqwm_wm_lvl_t1x_bxchx_chx_lvlnex_nex_bbqwp_wp_lvl
Error detected in sub-command generate_events
write debug file /home/chris/Documents/School/Software/MadGraph5_v1_5_7/uddrpv/run_01_stop_debug.log
If you need help with this issue please contact us on https://answers.launchpad.net/madgraph5
MadGraph5Error : A compilation Error occurs when trying to compile /home/chris/Documents/School/Software/MadGraph5_v1_5_7/uddrpv/SubProcesses/P1_gg_t1t1x_t1_bch_ch_lvlne_ne_bxbxqwm_wm_lvl_t1x_bxchx_chx_lvlnex_nex_bbqwp_wp_lvl.
 The compilation fails with the following output message:
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o symmetry.o symmetry.f
     touch qmass.inc
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o cuts.o cuts.f
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o cluster.o cluster.f
     /tmp/ccEh7PzV.s: Assembler messages:
     /tmp/ccEh7PzV.s:21755: Warning: ignoring incorrect section type for .lbss
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o myamp.o myamp.f
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o genps.o genps.f
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o initcluster.o initcluster.f
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o setscales.o setscales.f
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o reweight.o reweight.f
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o get_color.o get_color.f
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o idenparts.o idenparts.f
     gfortran -O -w -ffixed-line-length-132 -mcmodel=medium -w -c -o matrix1.o matrix1.f
     gfortran: internal compiler error: Killed (program f951)
     Please submit a full bug report,
     with preprocessed source if appropriate.
     See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions.
     make: *** [matrix1.o] Error 4
     make: *** Waiting for unfinished jobs....

 Please try to fix this compilations issue and retry.
 Help might be found at https://answers.launchpad.net/madgraph5.
 If you think that this is a bug, you can report this at https://bugs.launchpad.net/madgraph5
quit

When I both used -mcmodel=medium and changed group_subprocesses to False, I got the following:

Generating 50000 events with run name run_01
survey run_01
compile directory
run_card missed argument asrwgtflavor. Takes default: 5
/home/chris/Documents/School/Software/MadGraph5_v1_5_7/uddrpv/bin/internal/ufomodel/particles.py
write ./param_card.dat
Using random number seed offset = 27
Running Survey
Creating Jobs
Working on SubProcesses
    P1_gg_t1t1x_t1_bch_ch_epvene_ne_bxbxsxwm_wm_emvex_t1x_bxchx_chx_emvexnex_nex_bbswp_wp_epve_1

Command "generate_events " interrupted in sub-command:
"generate_events" with error:
MadEventError : Error gensym run not successful
Please report this bug on https://bugs.launchpad.net/madgraph5
More information is found in '/home/chris/Documents/School/Software/MadGraph5_v1_5_7/uddrpv/run_01_stop_debug.log'.
Please attach this file to your report.
quit

This second error required quite a bit of running before popping up. Thanks again! Chris

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#3

Hi,

Looks likes using set group_subprocesses False
is one step in the orrect direction.

Could you check if the subprocess compiles directly?
do
cd SubProcesses?P1_gg_t1t1x_t1_bch_ch_epvene_ne_bxbxsxwm_wm_emvex_t1x_bxchx_chx_emvexnex_nex_bbswp_wp_epve_1
make gensym
./gensym

Probably the make is not going to pass...

Cheers,

Olivier

Revision history for this message
Chris Brust (cpbrust) said : 		#4

Olivier,

   Those yielded:

make gensym
make: `gensym' is up to date.

./gensym
Killed

Thanks! Chris

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#5

Chris,

a "Killed" message when launching the code indicates that you the program fails to assign the required memory space.
So you an try a computer with more RAM and/or let pythia makes some of the decay (In particular those of the W).

Cheers,

Olivier

Revision history for this message
bala (kmbala86) said : 		#6

Dear Olivier,

I have generated a typical long decay chain process. I have been facing a similar problem. However, when I gave './gensym', I am getting a finite set of numbers as below. What does it mean?

For all small decay chain process, after ./gensym, I get to see only two numbers. What's the significance of getting only two separate digits?

cherry:/compute/kmbala/21Nov_Test/MG5_aMC_v2_5_1/PROC_MSSM_UFO_14> cd SubProcesses/P1_gg_gogo_go_n1ttx_t_blvl_tx_bxlvl_go_n1ttx_t_blvl_tx_bxlvl/
cherry:/compute/kmbala/21Nov_Test/MG5_aMC_v2_5_1/PROC_MSSM_UFO_14/SubProcesses/P1_gg_gogo_go_n1ttx_t_blvl_tx_bxlvl_go_n1ttx_t_blvl_tx_bxlvl> make gensym
make: 'gensym' is up to date.
cherry:/compute/kmbala/21Nov_Test/MG5_aMC_v2_5_1/PROC_MSSM_UFO_14/SubProcesses/P1_gg_gogo_go_n1ttx_t_blvl_tx_bxlvl_go_n1ttx_t_blvl_tx_bxlvl> ./gensym
1 2.0000373 2.0000374 2.0000376 2.0000377 2.0000400 2.0000401 2.0000403 2.0000404 2.0000454 2.0000455 2.0000457 2.0000458 2.0000481 2.0000482 2.0000484 2.0000485 2.0000616 2.0000617 2.0000619 2.0000620 2.0000643 2.0000644 2.0000646 2.0000647 2.0000697 2.0000698 2.0000700 2.0000701 2.0000724 2.0000725 2.0000727 2.0000728 6.0272290 6.0272291 6.0272293 6.0272294 6.0272317 6.0272318 6.0272320 6.0272321 6.0272371 6.0272372 6.0272374 6.0272375 6.0272398 6.0272399 6.0272401 6.0272402 6.0272533 6.0272534 6.0272536 6.0272537 6.0272560 6.0272561 6.0272563 6.0272564 6.0272614 6.0272615 6.0272617 6.0272618 6.0272641 6.0272642 6.0272644 6.0272645 6.0273019 6.0273020 6.0273022 6.0273023 6.0273046 6.0273047 6.0273049 6.0273050 6.0273100 6.0273101 6.0273103 6.0273104 6.0273127 6.0273128 6.0273130 6.0273131 6.0273262 6.0273263 6.0273265 6.0273266 6.0273289 6.0273290 6.0273292 6.0273293 6.0273343 6.0273344 6.0273346 6.0273347 6.0273370 6.0273371 6.0273373 6.0273374 6.0274477 6.0274478 6.0274480 6.0274481 6.0274504 6.0274505 6.0274507 6.0274508 6.0274558 6.0274559 6.0274561 6.0274562 6.0274585 6.0274586 6.0274588 6.0274589 6.0274720 6.0274721 6.0274723 6.0274724 6.0274747 6.0274748 6.0274750 6.0274751 6.0274801 6.0274802 6.0274804 6.0274805 6.0274828 6.0274829 6.0274831 6.0274832 6.0275206 6.0275207 6.0275209 6.0275210 6.0275233 6.0275234 6.0275236 6.0275237 6.0275287 6.0275288 6.0275290 6.0275291 6.0275314 6.0275315 6.0275317 6.0275318 6.0275449 6.0275450 6.0275452 6.0275453 6.0275476 6.0275477 6.0275479 6.0275480 6.0275530 6.0275531 6.0275533 6.0275534 6.0275557 6.0275558 6.0275560 6.0275561 6.0291973 6.0291974 6.0291976 6.0291977 6.0292000 6.0292001 6.0292003 6.0292004 6.0292054 6.0292055 6.0292057 6.0292058 6.0292081 6.0292082 6.0292084 6.0292085 6.0292216 6.0292217 6.0292219 6.0292220 6.0292243 6.0292244 6.0292246 6.0292247 6.0292297 6.0292298 6.0292300 6.0292301 6.0292324 6.0292325 6.0292327 6.0292328 6.0292702 6.0292703 6.0292705 6.0292706 6.0292729 6.0292730 6.0292732 6.0292733 6.0292783 6.0292784 6.0292786 6.0292787 6.0292810 6.0292811 6.0292813 6.0292814 6.0292945 6.0292946 6.0292948 6.0292949 6.0292972 6.0292973 6.0292975 6.0292976 6.0293026 6.0293027 6.0293029 6.0293030 6.0293053 6.0293054 6.0293056 6.0293057 6.0294160 6.0294161 6.0294163 6.0294164 6.0294187 6.0294188 6.0294190 6.0294191 6.0294241 6.0294242 6.0294244 6.0294245 6.0294268 6.0294269 6.0294271 6.0294272 6.0294403 6.0294404 6.0294406 6.0294407 6.0294430 6.0294431 6.0294433 6.0294434 6.0294484 6.0294485 6.0294487 6.0294488 6.0294511 6.0294512 6.0294514 6.0294515 6.0294889 6.0294890 6.0294892 6.0294893 6.0294916 6.0294917 6.0294919 6.0294920 6.0294970 6.0294971 6.0294973 6.0294974 6.0294997 6.0294998 6.0295000 6.0295001 6.0295132 6.0295133 6.0295135 6.0295136 6.0295159 6.0295160 6.0295162 6.0295163 6.0295213 6.0295214 6.0295216 6.0295217 6.0295240 6.0295241 6.0295243 6.0295244 6.0331339 6.0331340 6.0331342 6.0331343 6.0331366 6.0331367 6.0331369 6.0331370 6.0331420 6.0331421 6.0331423 6.0331424 6.0331447 6.0331448 6.0331450 6.0331451 6.0331582 6.0331583 6.0331585 6.0331586 6.0331609 6.0331610 6.0331612 6.0331613 6.0331663 6.0331664 6.0331666 6.0331667 6.0331690 6.0331691 6.0331693 6.0331694 6.0332068 6.0332069 6.0332071 6.0332072 6.0332095 6.0332096 6.0332098 6.0332099 6.0332149 6.0332150 6.0332152 6.0332153 6.0332176 6.0332177 6.0332179 6.0332180 6.0332311 6.0332312 6.0332314 6.0332315 6.0332338 6.0332339 6.0332341 6.0332342 6.0332392 6.0332393 6.0332395 6.0332396 6.0332419 6.0332420 6.0332422 6.0332423 6.0333526 6.0333527 6.0333529 6.0333530 6.0333553 6.0333554 6.0333556 6.0333557 6.0333607 6.0333608 6.0333610 6.0333611 6.0333634 6.0333635 6.0333637 6.0333638 6.0333769 6.0333770 6.0333772 6.0333773 6.0333796 6.0333797 6.0333799 6.0333800 6.0333850 6.0333851 6.0333853 6.0333854 6.0333877 6.0333878 6.0333880 6.0333881 6.0334255 6.0334256 6.0334258 6.0334259 6.0334282 6.0334283 6.0334285 6.0334286 6.0334336 6.0334337 6.0334339 6.0334340 6.0334363 6.0334364 6.0334366 6.0334367 6.0334498 6.0334499 6.0334501 6.0334502 6.0334525 6.0334526 6.0334528 6.0334529 6.0334579 6.0334580 6.0334582 6.0334583 6.0334606 6.0334607 6.0334609 6.0334610 6.0351022 6.0351023 6.0351025 6.0351026 6.0351049 6.0351050 6.0351052 6.0351053 6.0351103 6.0351104 6.0351106 6.0351107 6.0351130 6.0351131 6.0351133 6.0351134 6.0351265 6.0351266 6.0351268 6.0351269 6.0351292 6.0351293 6.0351295 6.0351296 6.0351346 6.0351347 6.0351349 6.0351350 6.0351373 6.0351374 6.0351376 6.0351377 6.0351751 6.0351752 6.0351754 6.0351755 6.0351778 6.0351779 6.0351781 6.0351782 6.0351832 6.0351833 6.0351835 6.0351836 6.0351859 6.0351860 6.0351862 6.0351863 6.0351994 6.0351995 6.0351997 6.0351998 6.0352021 6.0352022 6.0352024 6.0352025 6.0352075 6.0352076 6.0352078 6.0352079 6.0352102 6.0352103 6.0352105 6.0352106 6.0353209 6.0353210 6.0353212 6.0353213 6.0353236 6.0353237 6.0353239 6.0353240 6.0353290 6.0353291 6.0353293 6.0353294 6.0353317 6.0353318 6.0353320 6.0353321 6.0353452 6.0353453 6.0353455 6.0353456 6.0353479 6.0353480 6.0353482 6.0353483 6.0353533 6.0353534 6.0353536 6.0353537 6.0353560 6.0353561 6.0353563 6.0353564 6.0353938 6.0353939 6.0353941 6.0353942 6.0353965 6.0353966 6.0353968 6.0353969 6.0354019 6.0354020 6.0354022 6.0354023 6.0354046 6.0354047 6.0354049 6.0354050 6.0354181 6.0354182 6.0354184 6.0354185 6.0354208 6.0354209 6.0354211 6.0354212 6.0354262 6.0354263 6.0354265 6.0354266 6.0354289 6.0354290 6.0354292 6.0354293 6.0449437 6.0449438 6.0449440 6.0449441 6.0449464 6.0449465 6.0449467 6.0449468 6.0449518 6.0449519 6.0449521 6.0449522 6.0449545 6.0449546 6.0449548 6.0449549 6.0449680 6.0449681 6.0449683 6.0449684 6.0449707 6.0449708 6.0449710 6.0449711 6.0449761 6.0449762 6.0449764 6.0449765 6.0449788 6.0449789 6.0449791 6.0449792 6.0450166 6.0450167 6.0450169 6.0450170 6.0450193 6.0450194 6.0450196 6.0450197 6.0450247 6.0450248 6.0450250 6.0450251 6.0450274 6.0450275 6.0450277 6.0450278 6.0450409 6.0450410 6.0450412 6.0450413 6.0450436 6.0450437 6.0450439 6.0450440 6.0450490 6.0450491 6.0450493 6.0450494 6.0450517 6.0450518 6.0450520 6.0450521 6.0451624 6.0451625 6.0451627 6.0451628 6.0451651 6.0451652 6.0451654 6.0451655 6.0451705 6.0451706 6.0451708 6.0451709 6.0451732 6.0451733 6.0451735 6.0451736 6.0451867 6.0451868 6.0451870 6.0451871 6.0451894 6.0451895 6.0451897 6.0451898 6.0451948 6.0451949 6.0451951 6.0451952 6.0451975 6.0451976 6.0451978 6.0451979 6.0452353 6.0452354 6.0452356 6.0452357 6.0452380 6.0452381 6.0452383 6.0452384 6.0452434 6.0452435 6.0452437 6.0452438 6.0452461 6.0452462 6.0452464 6.0452465 6.0452596 6.0452597 6.0452599 6.0452600 6.0452623 6.0452624 6.0452626 6.0452627 6.0452677 6.0452678 6.0452680 6.0452681 6.0452704 6.0452705 6.0452707 6.0452708 6.0469120 6.0469121 6.0469123 6.0469124 6.0469147 6.0469148 6.0469150 6.0469151 6.0469201 6.0469202 6.0469204 6.0469205 6.0469228 6.0469229 6.0469231 6.0469232 6.0469363 6.0469364 6.0469366 6.0469367 6.0469390 6.0469391 6.0469393 6.0469394 6.0469444 6.0469445 6.0469447 6.0469448 6.0469471 6.0469472 6.0469474 6.0469475 6.0469849 6.0469850 6.0469852 6.0469853 6.0469876 6.0469877 6.0469879 6.0469880 6.0469930 6.0469931 6.0469933 6.0469934 6.0469957 6.0469958 6.0469960 6.0469961 6.0470092 6.0470093 6.0470095 6.0470096 6.0470119 6.0470120 6.0470122 6.0470123 6.0470173 6.0470174 6.0470176 6.0470177 6.0470200 6.0470201 6.0470203 6.0470204 6.0471307 6.0471308 6.0471310 6.0471311 6.0471334 6.0471335 6.0471337 6.0471338 6.0471388 6.0471389 6.0471391 6.0471392 6.0471415 6.0471416 6.0471418 6.0471419 6.0471550 6.0471551 6.0471553 6.0471554 6.0471577 6.0471578 6.0471580 6.0471581 6.0471631 6.0471632 6.0471634 6.0471635 6.0471658 6.0471659 6.0471661 6.0471662 6.0472036 6.0472037 6.0472039 6.0472040 6.0472063 6.0472064 6.0472066 6.0472067 6.0472117 6.0472118 6.0472120 6.0472121 6.0472144 6.0472145 6.0472147 6.0472148 6.0472279 6.0472280 6.0472282 6.0472283 6.0472306 6.0472307 6.0472309 6.0472310 6.0472360 6.0472361 6.0472363 6.0472364 6.0472387 6.0472388 6.0472390 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22.0530468 22.0530599 22.0530600 22.0530602 22.0530603 22.0530626 22.0530627 22.0530629 22.0530630 22.0530680 22.0530681 22.0530683 22.0530684 22.0530707 22.0530708 22.0530710 22.0530711 22.0531085 22.0531086 22.0531088 22.0531089 22.0531112 22.0531113 22.0531115 22.0531116 22.0531166 22.0531167 22.0531169 22.0531170 22.0531193 22.0531194 22.0531196 22.0531197 22.0531328 22.0531329 22.0531331 22.0531332 22.0531355 22.0531356 22.0531358 22.0531359 22.0531409 22.0531410 22.0531412 22.0531413 22.0531436 22.0531437 22.0531439 22.0531440 cherry:/compute/kmbala/21No1_gg_gogo_go_n1ttx_t_blvl_tx_bxlvl_go_n1ttx_t_blvl_tx_bxlvl>

I am also printing a copy of the error message, I got below:

Error detected in "generate_events "
write debug file /compute/kmbala/21Nov_Test/MG5_aMC_v2_5_1/PROC_MSSM_UFO_14/run_01_tag_1_debug.log
If you need help with this issue please contact us on https://answers.launchpad.net/mg5amcnlo
MadGraph5Error : A compilation Error occurs when trying to compile /compute/kmbala/21Nov_Test/MG5_aMC_v2_5_1/PROC_MSSM_UFO_14/SubProcesses/P1_gg_gogo_go_n1ttx_t_blvl_tx_bxlvl_go_n1ttx_t_blvl_tx_bxlvl.
 The compilation fails with the following output message:
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c driver.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c myamp.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c genps.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c unwgt.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c setcuts.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c get_color.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c cuts.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c cluster.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c reweight.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c initcluster.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c addmothers.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c setscales.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c auto_dsig.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c auto_dsig1.f -I../../Source/
     /usr/bin/gfortran-4.9 -O -w -fbounds-check -fPIC -mcmodel=large -ffixed-line-length-132 -mcmodel=large -w -c matrix1.f -I../../Source/
     /usr/bin/gfortran-4.9 -o madevent driver.o myamp.o genps.o unwgt.o setcuts.o get_color.o cuts.o cluster.o reweight.o initcluster.o addmothers.o setscales.o idenparts.o auto_dsig.o auto_dsig1.o matrix1.o -L../../lib/ -ldhelas -ldsample -lmodel -lgeneric -lpdf -lcernlib -lbias -lstdc++ -mcmodel=large
     ../../lib//libdsample.a(dsample.o): In function `xbin_':
     dsample.f:(.text+0xe): relocation truncated to fit: R_X86_64_PC32 against symbol `to_brietwigner_' defined in .bss section in ../../lib//libdsample.a(dsample.o)
     dsample.f:(.text+0x7f): relocation truncated to fit: R_X86_64_PC32 against symbol `to_brietwigner_' defined in .bss section in ../../lib//libdsample.a(dsample.o)
     dsample.f:(.text+0x14c): relocation truncated to fit: R_X86_64_PC32 against symbol `data_grid_' defined in COMMON section in ../../lib//libdsample.a(dsample.o)
     dsample.f:(.text+0x201): relocation truncated to fit: R_X86_64_PC32 against symbol `data_grid_' defined in COMMON section in ../../lib//libdsample.a(dsample.o)
     dsample.f:(.text+0x2b5): relocation truncated to fit: R_X86_64_PC32 against symbol `data_grid_' defined in COMMON section in ../../lib//libdsample.a(dsample.o)
     ../../lib//libdsample.a(dsample.o): In function `output_run_statistics_':
     dsample.f:(.text+0x328): relocation truncated to fit: R_X86_64_PC32 against symbol `general_stats_' defined in .bss section in ../../lib//libdsample.a(dsample.o)
     dsample.f:(.text+0x765): relocation truncated to fit: R_X86_64_PC32 against symbol `general_stats_' defined in .bss section in ../../lib//libdsample.a(dsample.o)
     ../../lib//libdsample.a(dsample.o): In function `write_discrete_grids_':
     dsample.f:(.text+0xcce): relocation truncated to fit: R_X86_64_PC32 against symbol `to_matrix_' defined in COMMON section in driver.o
     dsample.f:(.text+0xd0b): relocation truncated to fit: R_X86_64_PC32 against symbol `to_matrix_' defined in COMMON section in driver.o
     dsample.f:(.text+0xd24): relocation truncated to fit: R_X86_64_PC32 against symbol `to_mc_grouped_subproc_' defined in COMMON section in driver.o
     ../../lib//libdsample.a(dsample.o): In function `update_discrete_dimensions_':
     dsample.f:(.text+0x166e): additional relocation overflows omitted from the output
     collect2: error: ld returned 1 exit status
     makefile:44: recipe for target 'madevent' failed
     make: *** [madevent] Error 1

 Please try to fix this compilations issue and retry.
 Help might be found at https://answers.launchpad.net/mg5amcnlo.
 If you think that this is a bug, you can report this at https://bugs.launchpad.net/mg5amcnlo

With Thanks & Regards,
Bala

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#7

Hi,

To have that many number means that you have a lot of conflicting BW.
This is independent of your compilation issue which is related to the size of memory needed to compile the code.
I would suggest to factorize your generation in multiple stage to avoid such compilation issue.

Cheers,

Olivier

Revision history for this message
bala (kmbala86) said : 		#8

Dear Olivier,

I have set the cut-decays to False while generating the events. Then how do Breit-Wigners' cuts play a role?

Could you please be a little more elaborate wrt to factorizing the generation in multiple stages? I have generated only 10,000 events. My process is: p p > go go, (go > n1 t t~, t > b l+ vl, t~ > b~ l- vl~) in MSSM.

In the original post, you have suggested to decay the W bosons in Pythia. I have generated the events upto top pairs decaying to W pairs and bottom pairs; I didn't face any problem in doing so.

Is it allowed to decay W's in Pythia considering their masses?

Thank you very much.

Yours Sincerely,
Bala

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#9

Hi,

> I have set the cut-decays to False while generating the events. Then how do Breit-Wigners' cuts play a role?

Those two are completely independent. the bwcut off is ALWAYS applied irrespectively of the cut-decays flag.
The reason is that when using such syntax you do not want to include (too far) off-shell effect where interference with other diagram start to be important.

>Could you please be a little more elaborate wrt to factorizing the generation in multiple stages? I have generated only 10,000 events. My process is: p p > go go, (go > n1 t t~, t > b l+ vl, t~ > b~ l- vl~) in MSSM.

You can for example do
p p > go go, go > n1 t t~
and then ask pythia8 to do the top decay in a fully leptonic way.

>Is it allowed to decay W's in Pythia considering their masses?

Sure it is. Of course, you loose spin-correlation when doing decay in pythia.

Cheers,

Olivier

Revision history for this message
bala (kmbala86) said : 		#10

Thank you very much, Olivier.

Can you help with this problem?

Provide an answer of your own, or ask Chris Brust for more information if necessary.

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