ThrowAndSetRandomRun Namespace Reference

Functions
def	throwAndSetRandomRun (source, runsAndProbs)

Function Documentation

throwAndSetRandomRun()

def ThrowAndSetRandomRun.throwAndSetRandomRun	(		source,
			runsAndProbs
	)

Pass a list of tuple pairs, with the first item of the pair a run number
and the second number of the pair a weight.  The function will normalize the
weights so you do not have to worry about that.  The pairs will be used to randomly choose what Run
should be assigned to the job.

Definition at line 7 of file ThrowAndSetRandomRun.py.

def throwAndSetRandomRun(source,runsAndProbs):
    """Pass a list of tuple pairs, with the first item of the pair a run number
    and the second number of the pair a weight.  The function will normalize the
    weights so you do not have to worry about that.  The pairs will be used to randomly choose what Run
    should be assigned to the job.
    """
    from random import SystemRandom
    totalProb = 0.
    for r,p in runsAndProbs:
        totalProb+=p
    #this is the same random generator used to set the seeds for the RandomNumberGeneratorService
    random = SystemRandom()
    runProb = random.uniform(0,totalProb)
    sumProb = 0
    runNumber = 0
    for r,p in runsAndProbs:
        sumProb+=p
        if sumProb >= runProb:
            runNumber = r
            break
    print('setting runNumber to: ',runNumber)
    if source.type_() == "PoolSource":
        source.setRunNumber = cms.untracked.uint32(runNumber)
    else:
        #sources that inherit from ConfigurableInputSource use 'firstRun'
        source.firstRun = cms.untracked.uint32(runNumber)
 
    return

References edm.print().