new_contents: import opengm
  import numpy
  
  unaries=numpy.random.rand(1000, 1000,4)
  potts=opengm.PottsFunction([4,4],0.0,0.2)
  gm=opengm.grid2d2Order(unaries=unaries,regularizer=potts)
  
  
  
  
  
  inf=opengm.inference.Icm(gm,parameter=opengm.InfParam())
  
  v=inf.timingVisitor(visitNth=1000,timeLimit=4)
  inf.infer(v)
  
  #print v.getTimes()
  
subject: test for new visitors