HLTTriggerRatesAndTiming < Sandbox




-- Main.ZeynepUnalan - 15 Dec 2008
-- Main.ZeynepUnalan - 12 Dec 2008
   I. Pick your menu from the official [[https://twiki.cern.ch/twiki/bin/view/CMS/TriggerTables][TriggerTables]]  page
   I. Re-run L1 and include  the prescales from your menu. 
      * To rerun L1, you can use the sample config files, given in the  links below. These files were produced  following the  instructions at [[https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideReRunningL1][ReRunningL1]]. These files not only rerun GT emulator, but also skim L1 by  picking  the L1 seeds that are used by a specific menu. In 2_2_X file, for example, the L1 seeds used in  [[https://twiki.cern.ch/twiki/bin/view/CMS/GlobalTriggerMenu_L1Menu_2008MC_2E30][L1Menu_2008MC_2E30]] menu were picked. If you are using another menu, you should make sure !L1SeedsLogicalExpression in your config file includes all the L1 triggers used in your menu. Also note that "gtDigis" need to be renamed,  in these files to "newGtDigis":
         * !L1Skim config file for [[https://zeynep.web.cern.ch/zeynep/L1SkimNewMenu.cfg.20X][ 2_0_X]]        
         * !L1Skim config file for [[https://zeynep.web.cern.ch/zeynep/L1SkimNewMenu_cfg.py.21X][ 2_1_X]] 
         * !L1Skim config file for [[https://zeynep.web.cern.ch/zeynep/L1SkimNewMenu_cfg.py.22X][ 2_2_X]]    
      * Before rerunning and skimming L1, you want the right L1  prescales from your menu. The instructions on how to change L1 prescales can be found [[https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideL1TriggerFAQ#How_can_I_change_the_prescale_fa][here]]. You basically need to addpkg !L1TriggerConfig and modify  the prescale number for each bit given in file !L1TriggerConfig/L1GtConfigProducers/python/Luminosity/lumi1030/yourmenu_PrescaleFactorsAlgoTrig_cff.py file. To see the L1-bit to L1-Triggername  correspondance goto  page.[[https://twiki.cern.ch/twiki/bin/view/CMS/GlobalTriggerAvailableMenus][GlobalTriggerAvailableMenus]] and  search for your menu. 
         * Here is a yourmenu_PrescaleFactorsAlgoTrig_cff.py  file modified to match the  prescales in Trigger table 17-Oct-2008: v0.1 
         * Here is a  yourmenu_PrescaleFactorsAlgoTrig_cff.py  file modified to match the prescales in Trigger table 17-Oct-2008: v0.1
   I. Grab your HLT configuration from the ConfDB
   I. Modificaitons to the default HLT config file (HLT_2E30_cfff.py) is also needed since we modifed the Gt digis name while rerunning L1. Now we should point HLTLevel1GTSeed modules to pick up the "newGTDigis".   
   * Add PrescaleService to adjust the HLT prescales to match the menu you want.
   * Add in the myl1SeedBegin module
   * Adjust the HLT prescales to match the menu you want
   *  Add in the timing stuff

Topic revision: r1 - 2008-12-15 - ZeynepUnalan

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