def test_suggest_in_finite_cardinality(self):
"""Test that suggest None when search space is empty"""
space = Space()
space.register(Integer("yolo1", "uniform", 0, 5))
space.register(Fidelity("epoch", 1, 9, 3))
asha = ASHA(space)
for i in range(6):
force_observe(
asha,
create_trial(
(1, i),
names=("epoch", "yolo1"),
types=("fidelity", "integer"),
results={"objective": i},
),
)
for i in range(2):
force_observe(
asha,
create_trial(
(3, i),
names=("epoch", "yolo1"),
types=("fidelity", "integer"),
results={"objective": i},
),
)
assert asha.suggest(1) == []
def test_register_bracket_multi_fidelity(self, space, b_config):
"""Check that a point is registered inside the same bracket for diff fidelity."""
asha = ASHA(space, num_brackets=3)
value = 50
fidelity = 1
trial = create_trial_for_hb((fidelity, value), 0.0)
trial_id = asha.get_id(trial, ignore_fidelity=True)
force_observe(asha, trial)
bracket = asha.brackets[0]
assert len(bracket.rungs[0])
assert trial_id in bracket.rungs[0]["results"]
assert bracket.rungs[0]["results"][trial_id][0] == 0.0
assert bracket.rungs[0]["results"][trial_id][1].params == trial.params
fidelity = 3
trial = create_trial_for_hb((fidelity, value), 0.0)
trial_id = asha.get_id(trial, ignore_fidelity=True)
force_observe(asha, trial)
assert len(bracket.rungs[1])
assert trial_id in bracket.rungs[1]["results"]
assert bracket.rungs[0]["results"][trial_id][1].params != trial.params
assert bracket.rungs[1]["results"][trial_id][0] == 0.0
assert bracket.rungs[1]["results"][trial_id][1].params == trial.params
def test_register_corrupted_db(self, caplog, space, b_config):
"""Check that a point cannot registered if passed in order diff than fidelity."""
asha = ASHA(space, num_brackets=3)
value = 50
fidelity = 3
trial = create_trial_for_hb((fidelity, value))
force_observe(asha, trial)
assert "Trial registered to wrong bracket" not in caplog.text
fidelity = 1
trial = create_trial_for_hb((fidelity, value), objective=0.0)
caplog.clear()
force_observe(asha, trial)
assert "Trial registered to wrong bracket" in caplog.text
def test_register_next_bracket(self, space, b_config):
"""Check that a point is registered inside the good bracket when higher fidelity."""
asha = ASHA(space, num_brackets=3)
value = 50
fidelity = 3
trial = create_trial_for_hb((fidelity, value), 0.0)
trial_id = asha.get_id(trial, ignore_fidelity=True)
force_observe(asha, trial)
assert sum(len(rung["results"])
for rung in asha.brackets[0].rungs) == 0
assert sum(len(rung["results"])
for rung in asha.brackets[1].rungs) == 1
assert sum(len(rung["results"])
for rung in asha.brackets[2].rungs) == 0
assert trial_id in asha.brackets[1].rungs[0]["results"]
compare_registered_trial(
asha.brackets[1].rungs[0]["results"][trial_id], trial)
value = 51
fidelity = 9
trial = create_trial_for_hb((fidelity, value), 0.0)
trial_id = asha.get_id(trial, ignore_fidelity=True)
force_observe(asha, trial)
assert sum(len(rung["results"])
for rung in asha.brackets[0].rungs) == 0
assert sum(len(rung["results"])
for rung in asha.brackets[1].rungs) == 1
assert sum(len(rung["results"])
for rung in asha.brackets[2].rungs) == 1
assert trial_id in asha.brackets[2].rungs[0]["results"]
compare_registered_trial(
asha.brackets[2].rungs[0]["results"][trial_id], trial)