"No such file or directory: 'python'" when running NLO processes with new model

Thanks Matteo,

I guess this should fix the issue (or lead to another one)

Cheers,

Olivier

link to the patch:
https://bazaar.launchpad.net/~maddevelopers/mg5amcnlo/2.9.4/revision/309 <https://bazaar.launchpad.net/~maddevelopers/mg5amcnlo/2.9.4/revision/309>

> On 26 May 2021, at 12:41, matteo maltoni <email address hidden> wrote:
>
> New question #697254 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/697254
>
> Dear MadGraph team,
>
> I'm testing a model my supervisor produced, but every time I launch a generic process at NLO, both at fixed order or not, I get the error reported in the log file, pasted below.
>
> Is it an error due to the model, or to some wrong setting in my laptop? This error never occurred to me before...
>
> Any clarification would be more than appreciated.
>
> Thank you,
>
> Matteo
>
> Here's the log file:
>
> launch auto
> Traceback (most recent call last):
> File "/home/matteo/Scrivania/MG5_aMC_v3_1_0/madgraph/interface/extended_cmd.py", line 1544, in onecmd
> return self.onecmd_orig(line, **opt)
> File "/home/matteo/Scrivania/MG5_aMC_v3_1_0/madgraph/interface/extended_cmd.py", line 1493, in onecmd_orig
> return func(arg, **opt)
> File "/home/matteo/Scrivania/MG5_aMC_v3_1_0/madgraph/interface/amcatnlo_run_interface.py", line 1779, in do_launch
> self.compile(mode, options)
> File "/home/matteo/Scrivania/MG5_aMC_v3_1_0/madgraph/interface/amcatnlo_run_interface.py", line 5164, in compile
> self.do_treatcards('', amcatnlo=True, mode=mode)
> File "/home/matteo/Scrivania/MG5_aMC_v3_1_0/madgraph/interface/amcatnlo_run_interface.py", line 1718, in do_treatcards
> return super(aMCatNLOCmd,self).do_treatcards(line, amcatnlo)
> File "/home/matteo/Scrivania/MG5_aMC_v3_1_0/madgraph/interface/common_run_interface.py", line 911, in do_treatcards
> subprocess.call(['python', 'write_param_card.py'],
> File "/usr/lib/python3.8/subprocess.py", line 340, in call
> with Popen(*popenargs, **kwargs) as p:
> File "/usr/lib/python3.8/subprocess.py", line 854, in __init__
> self._execute_child(args, executable, preexec_fn, close_fds,
> File "/usr/lib/python3.8/subprocess.py", line 1702, in _execute_child
> raise child_exception_type(errno_num, err_msg, err_filename)
> FileNotFoundError: [Errno 2] No such file or directory: 'python'
> Related File: python
> Value of current Options:
> pythia8_path : /home/matteo/Scrivania/MG5_aMC_v3_1_0/HEPTools/pythia8
> hwpp_path : None
> thepeg_path : None
> hepmc_path : None
> madanalysis_path : None
> madanalysis5_path : None
> pythia-pgs_path : None
> td_path : None
> delphes_path : None
> exrootanalysis_path : None
> syscalc_path : None
> timeout : 60
> web_browser : None
> eps_viewer : None
> text_editor : None
> fortran_compiler : None
> f2py_compiler : None
> f2py_compiler_py2 : None
> f2py_compiler_py3 : None
> cpp_compiler : None
> auto_update : 7
> cluster_type : condor
> cluster_queue : None
> cluster_status_update : (600, 30)
> fastjet : None
> golem : None
> samurai : None
> ninja : /home/matteo/3.0.4/HEPTools/lib
> collier : None
> lhapdf : /home/matteo/Scrivania/MG5_aMC_v3_1_0/HEPTools/lhapdf6_py3/bin/lhapdf-config
> pineappl : pineappl
> lhapdf_py2 : None
> lhapdf_py3 : /home/matteo/Scrivania/MG5_aMC_v3_1_0/HEPTools/lhapdf6_py3/bin/lhapdf-config
> cluster_temp_path : None
> mg5amc_py8_interface_path : /home/matteo/Scrivania/MG5_aMC_v3_1_0/HEPTools/MG5aMC_PY8_interface
> cluster_local_path : None
> OLP : MadLoop
> cluster_nb_retry : 1
> cluster_retry_wait : 300
> cluster_size : 100
> output_dependencies : external
> crash_on_error : False
> auto_convert_model : False
> group_subprocesses : Auto
> ignore_six_quark_processes : False
> low_mem_multicore_nlo_generation : False
> complex_mass_scheme : False
> include_lepton_initiated_processes : False
> gauge : unitary
> stdout_level : 10
> loop_optimized_output : True
> loop_color_flows : False
> max_npoint_for_channel : 0
> default_unset_couplings : 99
> max_t_for_channel : 99
> zerowidth_tchannel : True
> nlo_mixed_expansion : True
> automatic_html_opening : False
> run_mode : 2
> nb_core : 8
> notification_center : True
> mg5_path : /home/matteo/Scrivania/MG5_aMC_v3_1_0
> #************************************************************
> #* MadGraph5_aMC@NLO *
> #* *
> #* * * *
> #* * * * * *
> #* * * * * 5 * * * * *
> #* * * * * *
> #* * * *
> #* *
> #* *
> #* VERSION 3.1.0 2021-03-25 *
> #* BZR MG5_aMC_v3_1_0 999 *
> #* *
> #* The MadGraph5_aMC@NLO Development Team - Find us at *
> #* https://server06.fynu.ucl.ac.be/projects/madgraph *
> #* *
> #************************************************************
> #* *
> #* Command File for MadGraph5_aMC@NLO *
> #* *
> #* run as ./bin/mg5_aMC filename *
> #* *
> #************************************************************
> set group_subprocesses Auto
> set ignore_six_quark_processes False
> set low_mem_multicore_nlo_generation False
> set complex_mass_scheme False
> set include_lepton_initiated_processes False
> set gauge unitary
> set loop_optimized_output True
> set loop_color_flows False
> set max_npoint_for_channel 0
> set default_unset_couplings 99
> set max_t_for_channel 99
> set zerowidth_tchannel True
> set nlo_mixed_expansion True
> import model sm
> define p = g u c d s u~ c~ d~ s~
> define j = g u c d s u~ c~ d~ s~
> define l+ = e+ mu+
> define l- = e- mu-
> define vl = ve vm vt
> define vl~ = ve~ vm~ vt~
> import model /home/matteo/Scrivania/MG5_aMC_v3_1_0/models/SMEFT3G4pFFV\
> VV
> define p = 21 2 4 1 3 -2 -4 -1 -3 5 -5 # pass to 5 flavors
> define j = p
> generate p p > t t~ [QCD]
> output
> ######################################################################
> ## PARAM_CARD AUTOMATICALY GENERATED BY MG5 FOLLOWING UFO MODEL ####
> ######################################################################
> ## ##
> ## Width set on Auto will be computed following the information ##
> ## present in the decay.py files of the model. ##
> ## See arXiv:1402.1178 for more details. ##
> ## ##
> ######################################################################
>
> ###################################
> ## INFORMATION FOR DIM6
> ###################################
> Block dim6
> 1 1.000000e+03 # Lambda
> 2 0.000000e+00 # cpDC
> 3 0.000000e+00 # cpWB
> 4 0.000000e+00 # cdp
> 5 0.000000e+00 # cp
> 6 0.000000e+00 # cWWW
> 7 1.100000e+00 # cG
> 8 0.000000e+00 # cpG
> 9 0.000000e+00 # cpW
> 10 0.000000e+00 # cpBB
>
> ###################################
> ## INFORMATION FOR DIM62F
> ###################################
> Block dim62f
> 1 0.000000e+00 # cpl1
> 2 0.000000e+00 # cpl2
> 3 0.000000e+00 # cpl3
> 4 0.000000e+00 # c3pl1
> 5 0.000000e+00 # c3pl2
> 6 0.000000e+00 # c3pl3
> 7 0.000000e+00 # cpe
> 8 0.000000e+00 # cpmu
> 9 0.000000e+00 # cpta
> 10 0.000000e+00 # cpqMi
> 11 0.000000e+00 # cpq3i
> 12 0.000000e+00 # cpQ3
> 13 0.000000e+00 # cpQM
> 14 0.000000e+00 # cpu
> 15 0.000000e+00 # cpt
> 16 0.000000e+00 # cpd
> 19 0.000000e+00 # ctp
> 22 0.000000e+00 # ctZ
> 23 0.000000e+00 # ctW
> 24 0.000000e+00 # ctG
>
> ###################################
> ## INFORMATION FOR DIM64F
> ###################################
> Block dim64f
> 1 0.000000e-10 # cQq83
> 2 0.000000e-10 # cQq81
> 3 0.000000e-10 # cQu8
> 4 0.000000e-10 # ctq8
> 6 0.000000e-10 # cQd8
> 7 0.000000e-10 # ctu8
> 8 0.000000e-10 # ctd8
> 10 0.000000e-10 # cQq13
> 11 0.000000e-10 # cQq11
> 12 0.000000e-10 # cQu1
> 13 0.000000e-10 # ctq1
> 14 0.000000e-10 # cQd1
> 16 0.000000e-10 # ctu1
> 17 0.000000e-10 # ctd1
> 19 0.000000e-10 # cQQ8
> 20 0.000000e-10 # cQQ1
> 21 0.000000e-10 # cQt1
> 23 0.000000e-10 # ctt1
> 25 0.000000e-10 # cQt8
>
> ###################################
> ## INFORMATION FOR DIM64F2L
> ###################################
> Block dim64f2l
> 1 0.000000e-10 # cQlM1
> 2 0.000000e-10 # cQlM2
> 3 0.000000e-10 # cQl31
> 4 0.000000e-10 # cQl32
> 5 0.000000e-10 # cQe1
> 6 0.000000e-10 # cQe2
> 7 0.000000e-10 # ctl1
> 8 0.000000e-10 # ctl2
> 9 0.000000e-10 # cte1
> 10 0.000000e-10 # cte2
> 13 0.000000e-10 # cQlM3
> 14 0.000000e-10 # cQl33
> 15 0.000000e-10 # cQe3
> 16 0.000000e-10 # ctl3
> 17 0.000000e-10 # cte3
> 19 0.000000e-10 # ctlS3
> 20 0.000000e-10 # ctlT3
> 21 0.000000e-10 # cblS3
>
> ###################################
> ## INFORMATION FOR DIM64F4L
> ###################################
> Block dim64f4l
> 1 0.000000e-10 # cll1111
> 2 0.000000e-10 # cll2222
> 3 0.000000e-10 # cll3333
> 4 0.000000e-10 # cll1122
> 5 0.000000e-10 # cll1133
> 6 0.000000e-10 # cll2233
> 7 0.000000e-10 # cll1221
> 8 0.000000e-10 # cll1331
> 9 0.000000e-10 # cll2332
>
> ###################################
> ## INFORMATION FOR MASS
> ###################################
> Block mass
> 6 1.720000e+02 # MT
> 23 9.118760e+01 # MZ
> 24 7.982440e+01 # MW
> 25 1.250000e+02 # MH
> ## Dependent parameters, given by model restrictions.
> ## Those values should be edited following the
> ## analytical expression. MG5 ignores those values
> ## but they are important for interfacing the output of MG5
> ## to external program such as Pythia.
> 1 0.000000e+00 # d : 0.0
> 2 0.000000e+00 # u : 0.0
> 3 0.000000e+00 # s : 0.0
> 4 0.000000e+00 # c : 0.0
> 5 0.000000e+00 # b : 0.0
> 11 0.000000e+00 # e- : 0.0
> 12 0.000000e+00 # ve : 0.0
> 13 0.000000e+00 # mu- : 0.0
> 14 0.000000e+00 # vm : 0.0
> 15 0.000000e+00 # ta- : 0.0
> 16 0.000000e+00 # vt : 0.0
> 21 0.000000e+00 # g : 0.0
> 22 0.000000e+00 # a : 0.0
> 9000002 9.118760e+01 # ghz : MZ
> 9000003 7.982440e+01 # ghwp : MW
> 9000004 7.982440e+01 # ghwm : MW
>
> ###################################
> ## INFORMATION FOR RENOR
> ###################################
> Block renor
> 1 5.550000e+02 # mueft
>
> ###################################
> ## INFORMATION FOR SMINPUTS
> ###################################
> Block sminputs
> 2 1.166370e-05 # Gf
> 3 1.184000e-01 # aS (Note that Parameter not used if you use a PDF set)
>
> ###################################
> ## INFORMATION FOR YUKAWA
> ###################################
> Block yukawa
> 6 1.720000e+02 # ymt
>
> ###################################
> ## INFORMATION FOR DECAY
> ###################################
> DECAY 6 1.508336e+00 # WT
> DECAY 23 2.495200e+00 # WZ
> DECAY 24 2.085000e+00 # WW
> DECAY 25 5.753088e-03 # WH
> ## Dependent parameters, given by model restrictions.
> ## Those values should be edited following the
> ## analytical expression. MG5 ignores those values
> ## but they are important for interfacing the output of MG5
> ## to external program such as Pythia.
> DECAY 1 0.000000e+00 # d : 0.0
> DECAY 2 0.000000e+00 # u : 0.0
> DECAY 3 0.000000e+00 # s : 0.0
> DECAY 4 0.000000e+00 # c : 0.0
> DECAY 5 0.000000e+00 # b : 0.0
> DECAY 11 0.000000e+00 # e- : 0.0
> DECAY 12 0.000000e+00 # ve : 0.0
> DECAY 13 0.000000e+00 # mu- : 0.0
> DECAY 14 0.000000e+00 # vm : 0.0
> DECAY 15 0.000000e+00 # ta- : 0.0
> DECAY 16 0.000000e+00 # vt : 0.0
> DECAY 21 0.000000e+00 # g : 0.0
> DECAY 22 0.000000e+00 # a : 0.0
> DECAY 9000002 2.495200e+00 # ghz : WZ
> DECAY 9000003 2.085000e+00 # ghwp : WW
> DECAY 9000004 2.085000e+00 # ghwm : WW
> #===========================================================
> # QUANTUM NUMBERS OF NEW STATE(S) (NON SM PDG CODE)
> #===========================================================
>
> Block QNUMBERS 9000001 # gha
> 1 0 # 3 times electric charge
> 2 1 # number of spin states (2S+1)
> 3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
> 4 1 # Particle/Antiparticle distinction (0=own anti)
> Block QNUMBERS 9000002 # ghz
> 1 0 # 3 times electric charge
> 2 1 # number of spin states (2S+1)
> 3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
> 4 1 # Particle/Antiparticle distinction (0=own anti)
> Block QNUMBERS 9000003 # ghwp
> 1 3 # 3 times electric charge
> 2 1 # number of spin states (2S+1)
> 3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
> 4 1 # Particle/Antiparticle distinction (0=own anti)
> Block QNUMBERS 9000004 # ghwm
> 1 -3 # 3 times electric charge
> 2 1 # number of spin states (2S+1)
> 3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
> 4 1 # Particle/Antiparticle distinction (0=own anti)
> Block QNUMBERS 9000005 # ghg
> 1 0 # 3 times electric charge
> 2 1 # number of spin states (2S+1)
> 3 8 # colour rep (1: singlet, 3: triplet, 8: octet)
> 4 1 # Particle/Antiparticle distinction (0=own anti)
> #***********************************************************************
> # MadGraph5_aMC@NLO *
> # *
> # run_card.dat aMC@NLO *
> # *
> # This file is used to set the parameters of the run. *
> # *
> # Some notation/conventions: *
> # *
> # Lines starting with a hash (#) are info or comments *
> # *
> # mind the format: value = variable ! comment *
> # *
> # Some of the values of variables can be list. These can either be *
> # comma or space separated. *
> # *
> # To display additional parameter, you can use the command: *
> # update to_full *
> #***********************************************************************
> #
> #*******************
> # Running parameters
> #*******************
> #
> #***********************************************************************
> # Tag name for the run (one word) *
> #***********************************************************************
> tag_1 = run_tag ! name of the run
> #***********************************************************************
> # Number of LHE events (and their normalization) and the required *
> # (relative) accuracy on the Xsec. *
> # These values are ignored for fixed order runs *
> #***********************************************************************
> 10000 = nevents ! Number of unweighted events requested
> -1.0 = req_acc ! Required accuracy (-1=auto determined from nevents)
> -1 = nevt_job! Max number of events per job in event generation.
> ! (-1= no split).
> #***********************************************************************
> # Normalize the weights of LHE events such that they sum or average to *
> # the total cross section *
> #***********************************************************************
> average = event_norm ! valid settings: average, sum, bias
> #***********************************************************************
> # Number of points per itegration channel (ignored for aMC@NLO runs) *
> #***********************************************************************
> 0.01 = req_acc_FO ! Required accuracy (-1=ignored, and use the
> ! number of points and iter. below)
> # These numbers are ignored except if req_acc_FO is equal to -1
> 5000 = npoints_FO_grid ! number of points to setup grids
> 4 = niters_FO_grid ! number of iter. to setup grids
> 10000 = npoints_FO ! number of points to compute Xsec
> 6 = niters_FO ! number of iter. to compute Xsec
> #***********************************************************************
> # Random number seed *
> #***********************************************************************
> 0 = iseed ! rnd seed (0=assigned automatically=default))
> #***********************************************************************
> # Collider type and energy *
> #***********************************************************************
> 1 = lpp1 ! beam 1 type (0 = no PDF)
> 1 = lpp2 ! beam 2 type (0 = no PDF)
> 6500.0 = ebeam1 ! beam 1 energy in GeV
> 6500.0 = ebeam2 ! beam 2 energy in GeV
> #***********************************************************************
> # PDF choice: this automatically fixes also alpha_s(MZ) and its evol. *
> #***********************************************************************
> nn23nlo = pdlabel ! PDF set
> 244600 = lhaid ! If pdlabel=lhapdf, this is the lhapdf number. Only
> ! numbers for central PDF sets are allowed. Can be a list;
> ! PDF sets beyond the first are included via reweighting.
> #***********************************************************************
> # Include the NLO Monte Carlo subtr. terms for the following parton *
> # shower (HERWIG6 | HERWIGPP | PYTHIA6Q | PYTHIA6PT | PYTHIA8) *
> # WARNING: PYTHIA6PT works only for processes without FSR!!!! *
> #***********************************************************************
> HERWIG6 = parton_shower
> 1.0 = shower_scale_factor ! multiply default shower starting
> ! scale by this factor
> #***********************************************************************
> # Renormalization and factorization scales *
> # (Default functional form for the non-fixed scales is the sum of *
> # the transverse masses divided by two of all final state particles *
> # and partons. This can be changed in SubProcesses/set_scales.f or via *
> # dynamical_scale_choice option) *
> #***********************************************************************
> False = fixed_ren_scale ! if .true. use fixed ren scale
> False = fixed_fac_scale ! if .true. use fixed fac scale
> 91.118 = muR_ref_fixed ! fixed ren reference scale
> 91.118 = muF_ref_fixed ! fixed fact reference scale
> -1 = dynamical_scale_choice ! Choose one (or more) of the predefined
> ! dynamical choices. Can be a list; scale choices beyond the
> ! first are included via reweighting
> 1.0 = muR_over_ref ! ratio of current muR over reference muR
> 1.0 = muF_over_ref ! ratio of current muF over reference muF
> #***********************************************************************
> # Reweight variables for scale dependence and PDF uncertainty *
> #***********************************************************************
> 1.0, 2.0, 0.5 = rw_rscale ! muR factors to be included by reweighting
> 1.0, 2.0, 0.5 = rw_fscale ! muF factors to be included by reweighting
> True = reweight_scale ! Reweight to get scale variation using the
> ! rw_rscale and rw_fscale factors. Should be a list of
> ! booleans of equal length to dynamical_scale_choice to
> ! specify for which choice to include scale dependence.
> False = reweight_PDF ! Reweight to get PDF uncertainty. Should be a
> ! list booleans of equal length to lhaid to specify for
> ! which PDF set to include the uncertainties.
> #***********************************************************************
> # Store reweight information in the LHE file for off-line model- *
> # parameter reweighting at NLO+PS accuracy *
> #***********************************************************************
> False = store_rwgt_info ! Store info for reweighting in LHE file
> #***********************************************************************
> # ickkw parameter: *
> # 0: No merging *
> # 3: FxFx Merging - WARNING! Applies merging only at the hard-event *
> # level. After showering an MLM-type merging should be applied as *
> # well. See http://amcatnlo.cern.ch/FxFx_merging.htm for details. *
> # 4: UNLOPS merging (with pythia8 only). No interface from within *
> # MG5_aMC available, but available in Pythia8. *
> # -1: NNLL+NLO jet-veto computation. See arxiv:1412.8408 [hep-ph]. *
> #***********************************************************************
> 0 = ickkw
> #***********************************************************************
> #
> #***********************************************************************
> # BW cutoff (M+/-bwcutoff*Gamma). Determines which resonances are *
> # written in the LHE event file *
> #***********************************************************************
> 15.0 = bwcutoff
> #***********************************************************************
> # Cuts on the jets. Jet clustering is performed by FastJet. *
> # - If gamma_is_j, photons are also clustered *
> # - When matching to a parton shower, these generation cuts should be *
> # considerably softer than the analysis cuts. *
> # - More specific cuts can be specified in SubProcesses/cuts.f *
> #***********************************************************************
> 1.0 = jetalgo ! FastJet jet algorithm (1=kT, 0=C/A, -1=anti-kT)
> 0.7 = jetradius ! The radius parameter for the jet algorithm
> 10.0 = ptj ! Min jet transverse momentum
> -1.0 = etaj ! Max jet abs(pseudo-rap) (a value .lt.0 means no cut)
> True = gamma_is_j! Wether to cluster photons as jets or not
> #***********************************************************************
> # Cuts on the charged leptons (e+, e-, mu+, mu-, tau+ and tau-) *
> # More specific cuts can be specified in SubProcesses/cuts.f *
> #***********************************************************************
> 0.0 = ptl ! Min lepton transverse momentum
> -1.0 = etal ! Max lepton abs(pseudo-rap) (a value .lt.0 means no cut)
> 0.0 = drll ! Min distance between opposite sign lepton pairs
> 0.0 = drll_sf ! Min distance between opp. sign same-flavor lepton pairs
> 0.0 = mll ! Min inv. mass of all opposite sign lepton pairs
> 30.0 = mll_sf ! Min inv. mass of all opp. sign same-flavor lepton pairs
> #***********************************************************************
> # Fermion-photon recombination parameters *
> # If Rphreco=0, no recombination is performed *
> #***********************************************************************
> 0.1 = Rphreco ! Minimum fermion-photon distance for recombination
> -1.0 = etaphreco ! Maximum abs(pseudo-rap) for photons to be recombined (a value .lt.0 means no cut)
> True = lepphreco ! Recombine photons and leptons together
> True = quarkphreco ! Recombine photons and quarks together
> #***********************************************************************
> # Photon-isolation cuts, according to hep-ph/9801442 *
> # Not applied if gamma_is_j *
> # When ptgmin=0, all the other parameters are ignored *
> # More specific cuts can be specified in SubProcesses/cuts.f *
> #***********************************************************************
> 20.0 = ptgmin ! Min photon transverse momentum
> -1.0 = etagamma ! Max photon abs(pseudo-rap)
> 0.4 = R0gamma ! Radius of isolation code
> 1.0 = xn ! n parameter of eq.(3.4) in hep-ph/9801442
> 1.0 = epsgamma ! epsilon_gamma parameter of eq.(3.4) in hep-ph/9801442
> True = isoEM ! isolate photons from EM energy (photons and leptons)
> #***********************************************************************
> # Cuts associated to MASSIVE particles identified by their PDG codes. *
> # All cuts are applied to both particles and anti-particles, so use *
> # POSITIVE PDG CODES only. Example of the syntax is {6 : 100} or *
> # {6:100, 25:200} for multiple particles *
> #***********************************************************************
> {} = pt_min_pdg ! Min pT for a massive particle
> {} = pt_max_pdg ! Max pT for a massive particle
> {} = mxx_min_pdg ! inv. mass for any pair of (anti)particles
> #***********************************************************************
> # Use PineAPPL to generate PDF-independent fast-interpolation grid *
> # (https://zenodo.org/record/3992765#.X2EWy5MzbVo) *
> #***********************************************************************
> False = pineappl ! PineAPPL switch
> #***********************************************************************
>
> --
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