def test_register_bracket_multi_fidelity(self, space: Space):
"""Check that a point is registered inside the same bracket for diff fidelity."""
hyperband = Hyperband(space)
value = 50
fidelity = 1
trial = create_trial_for_hb((fidelity, value), 0.0)
trial_id = hyperband.get_id(trial, ignore_fidelity=True)
force_observe(hyperband, trial)
assert hyperband.brackets is not None
bracket = hyperband.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 = hyperband.get_id(trial, ignore_fidelity=True)
force_observe(hyperband, 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_get_id(self, space):
"""Test valid id of points"""
hyperband = Hyperband(space)
assert hyperband.get_id(['whatever', 1]) == hyperband.get_id(['is here', 1])
assert hyperband.get_id(['whatever', 1]) != hyperband.get_id(['is here', 2])
assert hyperband.get_id(['whatever', 1], ignore_fidelity=False) != \
hyperband.get_id(['is here', 1], ignore_fidelity=False)
assert hyperband.get_id(['whatever', 1], ignore_fidelity=False) != \
hyperband.get_id(['is here', 2], ignore_fidelity=False)
assert hyperband.get_id(['same', 1], ignore_fidelity=False) == \
hyperband.get_id(['same', 1], ignore_fidelity=False)
assert hyperband.get_id(['same', 1], ignore_fidelity=False) != \
hyperband.get_id(['same', 1])
def test_suggest_duplicates_between_calls(self, monkeypatch,
hyperband: Hyperband,
bracket: HyperbandBracket):
"""Test that same trials are not allowed in different suggest call of
the same hyperband execution.
"""
hyperband.brackets = [bracket]
assert bracket.owner is hyperband
fidelity = 1
duplicate_trial = create_trial_for_hb((fidelity, 0.0))
new_trial = create_trial_for_hb((fidelity, 0.5))
duplicate_id = hyperband.get_id(duplicate_trial, ignore_fidelity=True)
bracket.rungs[0]["results"] = {
duplicate_id: (0.0, duplicate_trial)
} # type: ignore
hyperband.trial_to_brackets[duplicate_id] = 0
trials = [duplicate_trial, new_trial]
mock_samples(
hyperband,
trials +
[create_trial_for_hb((fidelity, i)) for i in range(10 - 2)],
)
trials = hyperband.suggest(100)
assert trials is not None
assert trials[0].params == new_trial.params
def test_suggest_duplicates_one_call(self, monkeypatch,
hyperband: Hyperband,
bracket: HyperbandBracket):
"""Test that same points are not allowed in the same suggest call ofxs
the same hyperband execution.
"""
hyperband.brackets = [bracket]
assert bracket.owner is hyperband
zhe_point = list(
map(create_trial_for_hb, [(1, 0.0), (1, 1.0), (1, 1.0), (1, 2.0)]))
mock_samples(hyperband, zhe_point * 2)
zhe_samples = hyperband.suggest(100)
assert zhe_samples is not None
assert zhe_samples[0].params["lr"] == 0.0
assert zhe_samples[1].params["lr"] == 1.0
assert zhe_samples[2].params["lr"] == 2.0
# zhe_point =
mock_samples(
hyperband,
list(
map(
create_trial_for_hb,
[
(3, 0.0),
(3, 1.0),
(3, 1.0),
(3, 2.0),
(3, 5.0),
(3, 4.0),
],
)),
)
hyperband.trial_to_brackets[hyperband.get_id(create_trial_for_hb(
(1, 0.0)),
ignore_fidelity=True)] = 0
hyperband.trial_to_brackets[hyperband.get_id(create_trial_for_hb(
(1, 0.0)),
ignore_fidelity=True)] = 0
zhe_samples = hyperband.suggest(100)
assert zhe_samples is not None
assert zhe_samples[0].params["lr"] == 5.0
assert zhe_samples[1].params["lr"] == 4.0
def test_get_id_multidim(self):
"""Test valid id for points with dim of shape > 1"""
space = Space()
space.register(Fidelity('epoch', 1, 9, 3))
space.register(Real('lr', 'uniform', 0, 1, shape=2))
hyperband = Hyperband(space)
assert hyperband.get_id(['whatever', [1, 1]]) == hyperband.get_id(['is here', [1, 1]])
assert hyperband.get_id(['whatever', [1, 1]]) != hyperband.get_id(['is here', [2, 2]])
assert hyperband.get_id(['whatever', [1, 1]], ignore_fidelity=False) != \
hyperband.get_id(['is here', [1, 1]], ignore_fidelity=False)
assert hyperband.get_id(['whatever', [1, 1]], ignore_fidelity=False) != \
hyperband.get_id(['is here', [2, 2]], ignore_fidelity=False)
assert hyperband.get_id(['same', [1, 1]], ignore_fidelity=False) == \
hyperband.get_id(['same', [1, 1]], ignore_fidelity=False)
assert hyperband.get_id(['same', [1, 1]], ignore_fidelity=False) != \
hyperband.get_id(['same', [1, 1]])
def test_get_id(self, space):
"""Test valid id of points"""
hyperband = Hyperband(space)
assert hyperband.get_id(["whatever", 1]) == hyperband.get_id(["is here", 1])
assert hyperband.get_id(["whatever", 1]) != hyperband.get_id(["is here", 2])
assert hyperband.get_id(
["whatever", 1], ignore_fidelity=False
) != hyperband.get_id(["is here", 1], ignore_fidelity=False)
assert hyperband.get_id(
["whatever", 1], ignore_fidelity=False
) != hyperband.get_id(["is here", 2], ignore_fidelity=False)
assert hyperband.get_id(["same", 1], ignore_fidelity=False) == hyperband.get_id(
["same", 1], ignore_fidelity=False
)
assert hyperband.get_id(["same", 1], ignore_fidelity=False) != hyperband.get_id(
["same", 1]
)
def test_update_rungs_return_candidate(self, hyperband: Hyperband,
bracket: HyperbandBracket,
rung_1: RungDict):
"""Check if a valid modified candidate is returned by update_rungs."""
assert bracket.owner is hyperband
bracket.rungs[1] = rung_1
trial = create_trial_for_hb((3, 0.0), 0.0)
candidates = bracket.promote(1)
trial_id = hyperband.get_id(trial, ignore_fidelity=True)
assert trial_id in bracket.rungs[1]["results"]
assert bracket.rungs[1]["results"][trial_id][1].params == trial.params
assert candidates[0].params["epoch"] == 9
def test_register_next_bracket(self, space: Space):
"""Check that a point is registered inside the good bracket when higher fidelity."""
hyperband = Hyperband(space)
value = 50
fidelity = 3
trial = create_trial_for_hb((fidelity, value), 0.0)
trial_id = hyperband.get_id(trial, ignore_fidelity=True)
force_observe(hyperband, trial)
assert hyperband.brackets is not None
assert sum(
len(rung["results"]) for rung in hyperband.brackets[0].rungs) == 0
assert sum(
len(rung["results"]) for rung in hyperband.brackets[1].rungs) == 1
assert sum(
len(rung["results"]) for rung in hyperband.brackets[2].rungs) == 0
assert trial_id in hyperband.brackets[1].rungs[0]["results"]
compare_registered_trial(
hyperband.brackets[1].rungs[0]["results"][trial_id], trial)
value = 51
fidelity = 9
trial = create_trial_for_hb((fidelity, value), 0.0)
trial_id = hyperband.get_id(trial, ignore_fidelity=True)
force_observe(hyperband, trial)
assert sum(
len(rung["results"]) for rung in hyperband.brackets[0].rungs) == 0
assert sum(
len(rung["results"]) for rung in hyperband.brackets[1].rungs) == 1
assert sum(
len(rung["results"]) for rung in hyperband.brackets[2].rungs) == 1
assert trial_id in hyperband.brackets[2].rungs[0]["results"]
compare_registered_trial(
hyperband.brackets[2].rungs[0]["results"][trial_id], trial)
def test_register(self, hyperband: Hyperband, bracket: HyperbandBracket):
"""Check that a point is correctly registered inside a bracket."""
assert bracket.owner is hyperband
trial = create_trial_for_hb((1, 0.0), 0.0)
trial_id = hyperband.get_id(trial, ignore_fidelity=True)
bracket.register(trial)
assert len(bracket.rungs[0])
assert trial_id in bracket.rungs[0]["results"]
assert trial.objective is not None
assert bracket.rungs[0]["results"][trial_id][
0] == trial.objective.value
assert bracket.rungs[0]["results"][trial_id][1].to_dict(
) == trial.to_dict()
def test_promotion_with_rung_1_hit(self, hyperband: Hyperband,
bracket: HyperbandBracket,
rung_0: RungDict):
"""Test that get_candidate gives us the next best thing if point is already in rung 1."""
trial = create_trial_for_hb((1, 0.0), None)
assert bracket.owner is hyperband
bracket.rungs[0] = rung_0
assert trial.objective is not None
bracket.rungs[1]["results"][hyperband.get_id(trial,
ignore_fidelity=True)] = (
trial.objective.value,
trial,
)
trials = bracket.get_candidates(0)
assert trials[0].params == create_trial_for_hb((1, 1), 0.0).params
def test_suggest_inf_duplicates(
self,
monkeypatch,
hyperband: Hyperband,
bracket: HyperbandBracket,
rung_0: RungDict,
rung_1: RungDict,
rung_2: RungDict,
):
"""Test that sampling inf collisions will return None."""
hyperband.brackets = [bracket]
assert bracket.owner is hyperband
zhe_trial = create_trial_for_hb(("fidelity", 0.0))
hyperband.trial_to_brackets[hyperband.get_id(zhe_trial,
ignore_fidelity=True)] = 0
mock_samples(hyperband, [zhe_trial] * 2)
assert hyperband.suggest(100) == []
def test_register(
self,
hyperband: Hyperband,
bracket: HyperbandBracket,
rung_0: RungDict,
rung_1: RungDict,
):
"""Check that a point is registered inside the bracket."""
hyperband.brackets = [bracket]
assert bracket.owner is hyperband
bracket.rungs = [rung_0, rung_1]
trial = create_trial_for_hb((1, 0.0), 0.0)
trial_id = hyperband.get_id(trial, ignore_fidelity=True)
hyperband.observe([trial])
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
def force_observe(hyperband: Hyperband, trial: Trial) -> None:
# hyperband.sampled.add(hashlib.md5(str(list(point)).encode("utf-8")).hexdigest())
hyperband.register(trial)
id_wo_fidelity = hyperband.get_id(trial, ignore_fidelity=True)
bracket_index = hyperband.trial_to_brackets.get(id_wo_fidelity, None)
if bracket_index is None:
fidelity = flatten(trial.params)[hyperband.fidelity_index]
assert hyperband.brackets is not None
bracket_index = [
i for i, bracket in enumerate(hyperband.brackets)
if bracket.rungs[0]["resources"] == fidelity
][0]
hyperband.trial_to_brackets[id_wo_fidelity] = bracket_index
hyperband.observe([trial])
def test_get_id_multidim(self):
"""Test valid id for points with dim of shape > 1"""
space = Space()
space.register(Fidelity("epoch", 1, 9, 3))
space.register(Real("lr", "uniform", 0, 1, shape=2))
hyperband = Hyperband(space)
assert hyperband.get_id(["whatever", [1, 1]]) == hyperband.get_id(
["is here", [1, 1]]
)
assert hyperband.get_id(["whatever", [1, 1]]) != hyperband.get_id(
["is here", [2, 2]]
)
assert hyperband.get_id(
["whatever", [1, 1]], ignore_fidelity=False
) != hyperband.get_id(["is here", [1, 1]], ignore_fidelity=False)
assert hyperband.get_id(
["whatever", [1, 1]], ignore_fidelity=False
) != hyperband.get_id(["is here", [2, 2]], ignore_fidelity=False)
assert hyperband.get_id(
["same", [1, 1]], ignore_fidelity=False
) == hyperband.get_id(["same", [1, 1]], ignore_fidelity=False)
assert hyperband.get_id(
["same", [1, 1]], ignore_fidelity=False
) != hyperband.get_id(["same", [1, 1]])