def test1(self):
        print "running TestNS"
        self.assert_(len(self.ns.replicas) == self.nreplicas)
        self.assert_(self.Emax < self.Emax0)
        self.assert_(self.Emin < self.Emax)
        self.assert_(self.Emin >= 0)
        self.assert_(self.ns.stepsize != self.stepsize)
        self.assertEqual(len(self.ns.max_energies), self.niter * self.nproc)