How to get conditions data from Frontier cache

Complete: 3


  • CMSSW version : CMSSW_1_0_0 or higher

Job Configuration

check frontier configuration for your local site

Check the calib-data section of ${CMS_PATH}/SITECONF/local/JobConfig/site-local-config.xml
How to config the calib-data section of site-local-config.xml is described here.

set up PoolDBESSource module with the following parameters:

  • string connect = "frontier://cms_conditions_data/detectorschema"
    beginning in CMSSW_1_3_0_pre2, "cms_conditions_data" selects the default database but can be replaced with one of the following to select different oracle databases behind frontier:
    • Frontier -> cms_orcoff
    • FrontierInt -> int9r_lb (the default, integration database, soon to be called cms_orcoff_int)
    • FrontierOn -> orcon
    • FrontierDev -> cms_orcoff_int2r (soon to be called cms_orcoff_dev)
      If you need others send email to Dave Dykstra <>
  • prior to CMSSW_1_7_0_pre4 needed "untracked bool siteLocalConfig = true" which caused the parameters from site-local-config.xml to be used and a default "catalog" to be defined. If "siteLocalConfig" was not set to true, the extra parameters were not included and an "untracked string catalog" had to be added. Beginning in CMSSW_1_7_0_pre4, neither "siteLocalConfig" nor "catalog" are necessary any more (if they are present, they are ignored), and the calib-data parameters from site-local-config.xml are always included when the connect string is of the above form. Beginning with the same release, you can add additional frontier parameters in parentheses (parameters detailed here) after the database selector, for example:
         string connect="frontier://FrontierDev(retrieve-ziplevel=0)/CMS_COND_FRONTIER" 
    Note - you can find the list of available detector schemas here.
    Example configuration file ecal_pedestals_frontier.cfg for CMSSW_1_7_0_pre4 and later:
     process TEST = {
         es_source = PoolDBESSource {
             VPSet toGet = {
                     string record = "EcalPedestalsRcd"
                     string tag = "EcalPedestals_test"
             string connect =  "frontier://cms_conditions_data/CMS_COND_FRONTIER"
             string timetype = "runnumber"
             PSet DBParameters = {
                 untracked int32 messageLevel=0
         untracked PSet maxEvents = {
             untracked int32 input = 100
         source = EmptySource {
             untracked uint32 firstRun = 1
             untracked uint32 numberEventsInRun = 1 
         module get = EventSetupRecordDataGetter { 
             VPSet toGet = {
                     string record = "EcalPedestalsRcd"
                     vstring data = {"EcalPedestals"}
             untracked bool verbose = true 
         module print = AsciiOutputModule { }
         path p = { get }
         endpath ep = { print }
    In older releases you may see some errors about CORAL_AUTH_USER not set; either ignore these messages or set both $CORAL_AUTH_USER and $CORAL_AUTH_PASSWORD environment variables to empty.
    Prior to CMSSW_1_3_0_pre2, replace the "PSet DBParameters" section above with just:
         untracked uint32 messagelevel = 0 
    Prior to CMSSW_1_5_X, replace the "PSet maxEvents" with the following in the EmptySource:
         untracked uint32 maxEvents = 100 

run cmsRun

 cmsRun ecal_pedestals_frontier.cfg 
If you want to see Frontier debug and logging information, set the following environment variables:

Review Status

Reviewer/Editor and date Comments
ZhenXie - 09 Aug 2006 page author
JennyWilliams - 03 Apr 2007 moved page into swguide

Responsible: ZhenXie
Last reviewed by: Reviewer

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Topic revision: r20 - 2007-09-17 - DaveDykstra

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