def METHOD_NAME(self):
    self.comm = Epetra.PyComm()
    self.size = 9 * self.comm.NumProc()
    self.map  = Epetra.Map(self.size,0,self.comm)
    self.crsg = Epetra.CrsGraph(Epetra.Copy, self.map, 3)
    n         = self.size
    for lrid in range(self.crsg.NumMyRows()):
        grid = self.crsg.GRID(lrid)
        if   grid == 0  : indices = [0,1]
        elif grid == n-1: indices = [n-2,n-1]
        else            : indices = [grid-1,grid,grid+1]
        self.crsg.InsertGlobalIndices(grid,indices)
    self.crsg.FillComplete()