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Opened 5 years ago

Last modified 5 years ago

#290 new question

bbgg+jets, strange output and long time execution

Reported by: francesco.micheli@cern.ch Owned by: support@sherpa-mc.de
Priority: major Milestone: rel-2.1.1
Component: Unknown Version: 2.1.0
Keywords: Cc:

Description

Dear all, I'm trying to generate bbgammagamma+jets samples and I get this error while running, after which the xsec calculation remain stuck forever at ~18%. I attach here the Run.dat file used, can you tell me if there is something wrong or something to add? thanks, Francesco

Comix was compiled for multithreading. Matrix_Element_Handler::BuildProcesses?(): Looking for processes ................................................................................................................................. done ( 937756 kB, 26s / 25s ). Matrix_Element_Handler::InitializeProcesses?(): Performing tests ................................

Amplitude::GaugeTest?(): Large deviation {

2.5252134256e-25

vs 2.52521342561e-25 => -4.65416594153e-12

}

Initialized the Matrix_Element_Handler for the hard processes. Initialized the Soft_Photon_Handler. Hadron_Decay_Map::Read: Initializing HadronDecays?.dat. This may take some time. Initialized the Hadron_Decay_Handler, Decay model = Hadrons Simple_Chain::CreateGrid?(): Init processes ................................................................................................ done. Grid_Creator::ReadInGrid?(): Reading grid ................................................................................................ done. Simple_Chain::CalculateTotal?(): Result is {

\sigma_{hard} = 56.942 mb at p_\perp_{min} = 4.49923 GeV

} Profile_Function_Base::CalculateOMean(3.0494): Results are {

k = 14.1006 <\tilde{O}> = 0.21626

} Initialized the Multiple_Interactions_Handler (MI_Handler). Read in channels from directory : .//Result/Comix?/MC_2_4GGPPbbb Single_Process::CalculateTotalXSec(): Calculate xs for '2_4GGPPbbb' (Comix) Starting the calculation. Lean back and enjoy ... . 2.25726 pb +- ( 0.0479906 pb = 2.12606 % ) 69260000 ( 371053754 -> 18.7 % ) integration time: ( 5s(6s) elapsed / 2m 5s(2m 25s) left ) 2.25726 pb +- ( 0.0479899 pb = 2.12602 % ) 69270000 ( 371107762 -> 18.6 % ) integration time: ( 13s(14s) elapsed / 5m 8s(5m 12s) left ) 2.25726 pb +- ( 0.0479891 pb = 2.12599 % ) 69280000 ( 371161688 -> 18.6 % ) integration time: ( 21s(21s) elapsed / 7m 59s(8m 2s) left ) 2.25726 pb +- ( 0.0479883 pb = 2.12595 % ) 69290000 ( 371215647 -> 18.5 % )

........

2.2653 pb +- ( 0.0478472 pb = 2.11218 % ) 72700000 ( 389479848 -> 18.6 % ) integration time: ( 1h 10m 22s(35m 52s) elapsed / 1d 26m 24s(12h 27m 37s) left ) 2.26531 pb +- ( 0.0478466 pb = 2.11214 % ) 72710000 ( 389533620 -> 18.6 % ) integration time: ( 1h 11m 49s(35m 58s) elapsed / 1d 56m 23s(12h 29m 20s) left ) 2.26532 pb +- ( 0.0478459 pb = 2.1121 % ) 72720000 ( 389588294 -> 18.6 % ) integration time: ( 1h 12m 51s(36m 3s) elapsed / 1d 1h 17m 27s(12h 31m) left ) 2.26533 pb +- ( 0.0478451 pb = 2.11206 % ) 72730000 ( 389641458 -> 18.6 % ) integration time: ( 1h 14m 48s(36m 8s) elapsed / 1d 1h 57m 49s(12h 32m 34s) left )

Attachments (1)

Run.txt (998 bytes) - added by francesco.micheli@cern.ch 5 years ago.

Download all attachments as: .zip

Change History (2)

Changed 5 years ago by francesco.micheli@cern.ch

Attachment: Run.txt added

comment:1 Changed 5 years ago by Stefan Hoeche

Hi Francesco,

you need an isolation cut for your photons if the born process is pp->yybb. Also, please note that the gg_yy generator DOES NOT provide gg->yybb! These processes are included in Sherpa only at the tree level.

Best Stefan

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