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_get_id(self, space, b_config):
"""Test valid id of points"""
asha = ASHA(space,
max_resources=b_config['R'],
grace_period=b_config['r'],
reduction_factor=b_config['eta'],
num_brackets=3)
assert asha.get_id([1, 'whatever']) == asha.get_id([1, 'is here'])
assert asha.get_id([1, 'whatever']) != asha.get_id([2, 'is here'])
def test_get_id_multidim(self, b_config):
"""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))
asha = ASHA(space, num_brackets=3)
assert asha.get_id(['whatever',
[1, 1]]) == asha.get_id(['is here', [1, 1]])
assert asha.get_id(['whatever', [1, 1]]) != asha.get_id(
['is here', [2, 2]])
def test_get_id_multidim(self, b_config):
"""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))
asha = ASHA(space, num_brackets=3)
assert asha.get_id(["whatever",
[1, 1]]) == asha.get_id(["is here", [1, 1]])
assert asha.get_id(["whatever", [1, 1]]) != asha.get_id(
["is here", [2, 2]])
def test_get_id_multidim(self, b_config):
"""Test valid id for points with dim of shape > 1"""
space = Space()
space.register(Fidelity('epoch'))
space.register(Real('lr', 'uniform', 0, 1, shape=2))
asha = ASHA(space,
max_resources=b_config['R'],
grace_period=b_config['r'],
reduction_factor=b_config['eta'],
num_brackets=3)
assert asha.get_id(['whatever',
[1, 1]]) == asha.get_id(['is here', [1, 1]])
assert asha.get_id(['whatever', [1, 1]]) != asha.get_id(
['is here', [2, 2]])
def test_update_rungs_return_candidate(self, asha: ASHA,
bracket: ASHABracket,
rung_1: RungDict):
"""Check if a valid modified candidate is returned by update_rungs."""
assert bracket.owner is asha
bracket.rungs[1] = rung_1
trial = create_trial_for_hb((3, 0.0), 0.0)
candidate = bracket.promote(1)[0]
trial_id = asha.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 candidate.params["epoch"] == 9
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)
def test_register(self, asha: ASHA, bracket: ASHABracket, rung_0: RungDict,
rung_1: RungDict):
"""Check that a point is registered inside the bracket."""
asha.brackets = [bracket]
assert bracket.owner is asha
bracket.rungs = [rung_0, rung_1]
trial = create_trial_for_hb((1, 0.0), 0.0)
trial_id = asha.get_id(trial, ignore_fidelity=True)
asha.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 test_promotion_with_rung_1_hit(self, asha: ASHA, bracket: ASHABracket,
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 asha
bracket.rungs[0] = rung_0
assert trial.objective is not None
bracket.rungs[1]["results"][asha.get_id(trial,
ignore_fidelity=True)] = (
trial.objective.value,
trial,
)
trial = bracket.get_candidates(0)[0]
assert trial.params == create_trial_for_hb((1, 1.0), 0.0).params
def test_suggest_inf_duplicates(
self,
monkeypatch,
asha: ASHA,
bracket: ASHABracket,
rung_0: RungDict,
rung_1: RungDict,
rung_2: RungDict,
):
"""Test that sampling inf collisions returns None."""
asha.brackets = [bracket]
assert bracket.owner is asha
fidelity = 1
zhe_trial = create_trial_for_hb((fidelity, 0.0))
asha.trial_to_brackets[asha.get_id(zhe_trial,
ignore_fidelity=True)] = 0
def sample(num=1, seed=None):
return [zhe_trial]
monkeypatch.setattr(asha.space, "sample", sample)
assert asha.suggest(1) == []
def test_suggest_duplicates(
self,
monkeypatch,
asha: ASHA,
bracket: ASHABracket,
rung_0: RungDict,
rung_1: RungDict,
rung_2: RungDict,
):
"""Test that sampling collisions are handled."""
asha.brackets = [bracket]
assert bracket.owner is asha
fidelity = 1
duplicate_trial = create_trial_for_hb((fidelity, 0.0))
new_trial = create_trial_for_hb((fidelity, 0.5))
duplicate_id_wo_fidelity = asha.get_id(duplicate_trial,
ignore_fidelity=True)
bracket.rungs[0] = dict(
n_trials=2,
resources=1,
results={duplicate_id_wo_fidelity: (0.0, duplicate_trial)},
)
asha.trial_to_brackets[duplicate_id_wo_fidelity] = 0
asha.register(duplicate_trial)
trials = [duplicate_trial, new_trial]
def sample(num=1, seed=None):
return trials
monkeypatch.setattr(asha.space, "sample", sample)
assert asha.suggest(1)[0].params == new_trial.params
def test_get_id(self, space, b_config):
"""Test valid id of points"""
asha = ASHA(space, num_brackets=3)
assert asha.get_id(['whatever', 1]) == asha.get_id(['is here', 1])
assert asha.get_id(['whatever', 1]) != asha.get_id(['is here', 2])