def get_default_ts(self, t0=None, t1=None, dt=None, n_step=None, step=None):
t0 = get_default(t0, 0.0)
t1 = get_default(t1, 1.0)
dt = get_default(dt, 1.0)
n_step = get_default(n_step, 1)
ts = TimeStepper(t0, t1, dt, n_step)
ts.set_step(step)
return ts
def verify_correctors(self, sign, state0, filename, problem=None):
problem = get_default(problem, self.problem)
io = HDF5MeshIO(filename)
ts = TimeStepper(*io.read_time_stepper())
ts.set_step(0)
problem.equations.init_time(ts)
variables = self.problem.get_variables()
vu, vp = self.dump_variables
vdp = self.verify_variables[-1]
p0 = sign * state0[vp]
format = '====== time %%e (step %%%dd of %%%dd) ====='\
% ((ts.n_digit,) * 2)
vv = variables
ok = True
for step, time in ts:
output(format % (time, step + 1, ts.n_step))
data = io.read_data(step)
if step == 0:
assert_(nm.allclose(data[vp].data, p0))
state0 = problem.create_state()
state0.set_full(data[vu].data, vu)
state0.set_full(data[vp].data, vp)
vv[vdp].set_data(data['d' + vp].data)
problem.update_time_stepper(ts)
state = problem.solve(state0)
state, state0 = state(), state0()
err = nla.norm(state - state0) / nla.norm(state0)
output(state.min(), state.max())
output(state0.min(), state0.max())
output('>>>>>', err)
ok = ok and (err < 1e-12)
problem.advance(ts)
return ok
def verify_correctors(self, sign, state0, filename, problem=None):
problem = get_default(problem, self.problem)
io = HDF5MeshIO(filename)
ts = TimeStepper(*io.read_time_stepper())
ts.set_step(0)
problem.equations.init_time(ts)
variables = self.problem.get_variables()
vu, vp = self.dump_variables
vdp = self.verify_variables[-1]
p0 = sign * state0[vp]
format = '====== time %%e (step %%%dd of %%%dd) ====='\
% ((ts.n_digit,) * 2)
vv = variables
ok = True
for step, time in ts:
output(format % (time, step + 1, ts.n_step))
data = io.read_data(step)
if step == 0:
assert_(nm.allclose(data[vp].data, p0))
state0 = problem.create_state()
state0.set_full(data[vu].data, vu)
state0.set_full(data[vp].data, vp)
vv[vdp].data_from_data(data['d'+vp].data)
problem.update_time_stepper(ts)
state = problem.solve(state0)
state, state0 = state(), state0()
err = nla.norm(state - state0) / nla.norm(state0)
output(state.min(), state.max())
output(state0.min(), state0.max())
output('>>>>>', err)
ok = ok and (err < 1e-12)
problem.advance(ts)
return ok
