Skip to content

add more ode tests #2819

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Apr 24, 2020
Merged

add more ode tests #2819

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
37 changes: 37 additions & 0 deletions tests/ode_test.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,43 @@ def dynamics(y, t):
jtu.check_grads(integrate, (y0, ts), modes=["rev"], order=2,
rtol=tol, atol=tol)

@jtu.skip_on_devices("tpu")
def test_decay(self):
def decay(y, t, arg1, arg2):
return -np.sqrt(t) - y + arg1 - np.mean((y + arg2)**2)

rng = onp.random.RandomState(0)
arg1 = rng.randn(3)
arg2 = rng.randn(3)

def integrate(y0, ts):
return odeint(decay, y0, ts, arg1, arg2)

y0 = rng.randn(3)
ts = np.linspace(0.1, 0.2, 4)

tol = 1e-1 if num_float_bits(onp.float64) == 32 else 1e-3
jtu.check_grads(integrate, (y0, ts), modes=["rev"], order=2,
rtol=tol, atol=tol)

@jtu.skip_on_devices("tpu")
def test_swoop(self):
def swoop(y, t, arg1, arg2):
return np.array(y - np.sin(t) - np.cos(t) * arg1 + arg2)

ts = np.array([0.1, 0.2])
tol = 1e-1 if num_float_bits(onp.float64) == 32 else 1e-3

y0 = np.linspace(0.1, 0.9, 10)
integrate = lambda y0, ts: odeint(swoop, y0, ts, 0.1, 0.2)
jtu.check_grads(integrate, (y0, ts), modes=["rev"], order=2,
rtol=tol, atol=tol)

big_y0 = np.linspace(1.1, 10.9, 10)
integrate = lambda y0, ts: odeint(swoop, big_y0, ts, 0.1, 0.3)
jtu.check_grads(integrate, (y0, ts), modes=["rev"], order=2,
rtol=tol, atol=tol)


if __name__ == '__main__':
absltest.main()