fortran error

Asked by Juan Carlos Vasquez Carmona on 2018-07-23

Dear Madgraph team,

I use MacOS 10.13.6. I recently install the latest version of MG5 v2_6_3_2.

As a test I generated the process p p > e+ e-. After I launch the process I got the following error:

Error detected in "generate_events run_01"
write debug file /Users/juancarlos/Documents/MG5_aMC_v2_6_3_2/PROC_sm_3/run_01_tag_1_debug.log
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MadGraph5Error : A compilation Error occurs when trying to compile /Users/juancarlos/Documents/MG5_aMC_v2_6_3_2/PROC_sm_3/SubProcesses/P1_qq_ll.
 The compilation fails with the following output message:
     gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -w -c driver.f -I../../Source/
     gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -w -c myamp.f -I../../Source/
     gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -w -c genps.f -I../../Source/
     gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -w -c unwgt.f -I../../Source/

            call gen_mom(iconfig,mincfig,maxcfig,invar,wgt,x,p)
     Error: Actual argument contains too few elements for dummy argument 'p1' (5/20) at (1)
     make: *** [genps.o] Error 1
     make: *** Waiting for unfinished jobs....

 Please try to fix this compilations issue and retry.
 Help might be found at
 If you think that this is a bug, you can report this at

I have the following gfortran version: GNU Fortran (Homebrew GCC 8.1.0) 8.1.0.

Any help on this issue would be very much appreciated.

Juan Carlos

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Hi Juan,

GCC8 breaks retro-compatibility and this breaks a lot of code including ours.
So for the moment we are not compatible with that version of GCC.



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