def test_fetch_hpos_valid_results_first_time(client):
config = copy.deepcopy(CONFIG)
num_trials = 5
config['count'] = num_trials
config['fidelity'] = Fidelity(1, 1, name='epoch').to_dict()
register_hpo(client, NAMESPACE + '1', foo, config, {'e': 2})
register_hpo(client, NAMESPACE + '2', foo, config, {'e': 2})
worker = TrialWorker(URI, DATABASE, 0, None)
worker.max_retry = 0
worker.timeout = 1
worker.run()
namespaces = {'hpo' + str(i): [NAMESPACE + str(i)] for i in range(1, 3)}
data = defaultdict(dict)
_ = fetch_hpos_valid_curves(client, namespaces, ['e'], data)
assert len(data) == 2
assert len(data['hpo1']) == 1
assert len(data['hpo2']) == 1
namespace = f'{NAMESPACE}1'
assert data['hpo1'][namespace].attrs['namespace'] == namespace
assert data['hpo1'][namespace].epoch.values.tolist() == [0, 1]
assert data['hpo1'][namespace].order.values.tolist() == list(
range(num_trials))
assert data['hpo1'][namespace].seed.values.tolist() == [1]
assert data['hpo1'][namespace].params.values.tolist() == list('abcd')
assert data['hpo1'][namespace].noise.values.tolist() == ['e']
assert data['hpo1'][namespace].obj.shape == (2, num_trials, 1)
assert data['hpo1'][namespace].valid.shape == (2, num_trials, 1)
assert data['hpo1'][namespace] == data['hpo2'][f'{NAMESPACE}2']
def test_get_hpo_completed(client):
register_hpo(client, NAMESPACE, foo, CONFIG, {'e': 2})
worker = TrialWorker(URI, DATABASE, 0, NAMESPACE)
worker.max_retry = 0
worker.run()
hpo, remote_call = get_hpo(client, NAMESPACE)
assert len(hpo.trials) == 1
state_dict = hpo.state_dict(compressed=False)
assert state_dict['seed'] == CONFIG['seed']
assert state_dict['fidelity'] == CONFIG['fidelity']
state_dict['space'].pop('uid')
assert state_dict['space'] == CONFIG['space']
# Verify default was passed properly
assert remote_call['kwargs']['e'] == 2
remote_call['kwargs'].update(dict(a=1, b=1, c=1, d=1, uid=0,
client=client))
# Verify that the remote_call is indeed callable.
a = 1
b = 1
c = 1
d = 1
e = 2
assert exec_remote_call(remote_call) == a + 2 * b - c**2 + d + e
def run_hpos(namespaces):
for namespace in namespaces:
register_hpo(client, namespace, foo, config, {'e': 2})
worker = TrialWorker(URI, DATABASE, 0, None)
worker.max_retry = 0
worker.timeout = 1
worker.run()
def run_hpos(namespaces):
for i, namespace in enumerate(namespaces):
config['seed'] = i
register_hpo(client, namespace, foo, config, {'e': 2})
worker = TrialWorker(URI, DATABASE, 0, None)
worker.max_retry = 0
worker.timeout = 1
worker.run()
def test_is_hpo_completed(client):
assert not is_hpo_completed(client, NAMESPACE)
register_hpo(client, NAMESPACE, foo, CONFIG, DEFAULTS)
assert not is_hpo_completed(client, NAMESPACE)
worker = TrialWorker(URI, DATABASE, 0, NAMESPACE)
worker.max_retry = 0
worker.run()
assert is_hpo_completed(client, NAMESPACE)
def test_plot(client):
config = copy.deepcopy(CONFIG)
num_trials = 10
config['count'] = num_trials
config['fidelity'] = Fidelity(1, 1, name='epoch').to_dict()
register_hpo(client, NAMESPACE, foo, config, {'e': 2})
worker = TrialWorker(URI, DATABASE, 0, NAMESPACE)
worker.max_retry = 0
worker.run()
data = fetch_hpo_valid_curves(client, NAMESPACE, ['e'])
plot(config['space'], 'obj', data, 'test.png')
def test_hpo_serializable(model_type):
namespace = 'test-robo-' + model_type
n_init = 2
count = 10
# First run using a remote worker where serialization is necessary
# and for which hpo is resumed between each braning call
hpo = build_robo(model_type, n_init=n_init, count=count)
namespace = 'test_hpo_serializable'
hpo = {
'hpo': make_remote_call(HPOptimizer, **hpo.kwargs),
'hpo_state': None,
'work': make_remote_call(branin),
'experiment': namespace
}
client = new_client(URI, DATABASE)
client.push(WORK_QUEUE, namespace, message=hpo, mtype=HPO_ITEM)
worker = TrialWorker(URI, DATABASE, 0, None)
worker.max_retry = 0
worker.timeout = 1
worker.run()
messages = client.monitor().unread_messages(RESULT_QUEUE, namespace)
for m in messages:
if m.mtype == HPO_ITEM:
break
assert m.mtype == HPO_ITEM, 'HPO not completed'
worker_hpo = build_robo(model_type)
worker_hpo.load_state_dict(m.message['hpo_state'])
assert len(worker_hpo.trials) == count
# Then run locally where BO is not resumed
local_hpo = build_robo(model_type, n_init=n_init, count=count)
i = 0
best = float('inf')
while local_hpo.remaining() and i < local_hpo.hpo.count:
samples = local_hpo.suggest()
for sample in samples:
z = branin(**sample)
local_hpo.observe(sample['uid'], z)
best = min(z, best)
i += 1
assert i == local_hpo.hpo.count
# Although remote worker was resumed many times, it should give the same
# results as the local one which was executed in a single run.
assert worker_hpo.trials == local_hpo.trials
def test_save_load_results(client):
config = copy.deepcopy(CONFIG)
num_trials = 2
config['count'] = num_trials
config['fidelity'] = Fidelity(1, 1, name='epoch').to_dict()
register_hpo(client, NAMESPACE, foo, config, {'e': 2})
worker = TrialWorker(URI, DATABASE, 0, NAMESPACE)
worker.max_retry = 0
worker.run()
data = fetch_hpo_valid_curves(client, NAMESPACE, ['e'])
save_results(NAMESPACE, data, '.')
assert load_results(NAMESPACE, '.')
def test_fetch_hpo_valid_results_no_epochs(client):
config = copy.deepcopy(CONFIG)
num_trials = 5
config['count'] = num_trials
config['fidelity'] = Fidelity(1, 1, name='epoch').to_dict()
register_hpo(client, NAMESPACE, foo, config, {'e': 2})
worker = TrialWorker(URI, DATABASE, 0, NAMESPACE)
worker.max_retry = 0
worker.run()
data = fetch_hpo_valid_curves(client, NAMESPACE, ['e'])
assert data.attrs['namespace'] == NAMESPACE
assert data.epoch.values.tolist() == [0, 1]
assert data.order.values.tolist() == list(range(num_trials))
assert data.seed.values.tolist() == [1]
assert data.params.values.tolist() == list('abcd')
assert data.noise.values.tolist() == ['e']
assert data.obj.shape == (2, num_trials, 1)
assert data.valid.shape == (2, num_trials, 1)
def test_convert_xarray_to_scipy_results(client):
config = copy.deepcopy(CONFIG)
num_trials = 10
config['count'] = num_trials
config['fidelity'] = Fidelity(1, 1, name='epoch').to_dict()
register_hpo(client, NAMESPACE, foo, config, {'e': 2})
worker = TrialWorker(URI, DATABASE, 0, NAMESPACE)
worker.max_retry = 0
worker.run()
data = fetch_hpo_valid_curves(client, NAMESPACE, ['e'])
scipy_results = xarray_to_scipy_results(config['space'], 'obj', data)
min_idx = numpy.argmin(data.obj.values[1, :, 0])
assert scipy_results.x[0] == data.a.values[min_idx, 0]
assert scipy_results.x[1] == data.b.values[min_idx, 0]
assert scipy_results.x[2] == data.c.values[min_idx, 0]
assert scipy_results.x[3] == numpy.log(data.d.values[min_idx, 0])
assert scipy_results.fun == data.obj.values[1, min_idx, 0]
assert len(scipy_results.x_iters) == num_trials
def test_fetch_hpo_valid_results(client):
config = copy.deepcopy(CONFIG)
num_trials = 5
config['count'] = num_trials
register_hpo(client, NAMESPACE, foo, config, {'e': 2})
worker = TrialWorker(URI, DATABASE, 0, NAMESPACE)
worker.max_retry = 0
worker.run()
data = fetch_hpo_valid_curves(client, NAMESPACE, ['e'])
assert data.attrs['namespace'] == NAMESPACE
assert data.epoch.values.tolist() == list(
range(config['fidelity']['max'] + 1))
assert data.order.values.tolist() == list(range(num_trials))
assert data.seed.values.tolist() == [1]
assert data.params.values.tolist() == list('abcd')
assert data.noise.values.tolist() == ['e']
assert data.obj.shape == (config['fidelity']['max'] + 1, num_trials, 1)
assert numpy.all(
(data.obj.loc[dict(epoch=10)] -
data.obj.loc[dict(epoch=0)]) == (numpy.ones((num_trials, 1)) * 10))
def test_register_hpo_is_actionable(client):
"""Test that the registered HPO have valid workitems and can be executed."""
namespace = 'test-hpo'
config = {
'name': 'random_search',
'seed': 1,
'count': 1,
'fidelity': Fidelity(1, 10, name='d').to_dict(),
'space': {
'a': 'uniform(-1, 1)',
'b': 'uniform(-1, 1)',
'c': 'uniform(-1, 1)',
'd': 'uniform(-1, 1)'
}
}
defaults = {}
register_hpo(client, namespace, foo, config, defaults)
worker = TrialWorker(URI, DATABASE, 0, namespace)
worker.max_retry = 0
worker.run()
assert client.monitor().read_count(WORK_QUEUE, namespace,
mtype=WORK_ITEM) == 1
assert client.monitor().read_count(WORK_QUEUE, namespace,
mtype=HPO_ITEM) == 2
messages = client.monitor().unread_messages(RESULT_QUEUE,
namespace,
mtype=HPO_ITEM)
compressed_state = messages[0].message.get('hpo_state')
assert compressed_state is not None
state = decompress_dict(compressed_state)
assert len(state['trials']) == 1
assert state['trials'][0][1]['objectives'] == [10.715799430116764]
def test_fetch_results_all_completed(client):
defaults = {'a': 1000, 'b': 1001}
params = {'c': 2, 'd': 3, 'epoch': 5}
defaults.update(params)
medians = ['a']
num_items = 2
configs = generate(range(num_items), 'ab', defaults=defaults)
namespace = 'test'
register(client, foo, namespace, configs)
print(configs)
worker = TrialWorker(URI, DATABASE, 0, None)
worker.max_retry = 0
worker.timeout = 1
worker.run()
print(fetch_vars_stats(client, namespace))
data = fetch_results(client, namespace, configs, medians, params, defaults)
assert data.medians == ['a']
assert data.noise.values.tolist() == ['a', 'b']
assert data.params.values.tolist() == ['c', 'd']
assert data.order.values.tolist() == [0, 1]
assert data.epoch.values.tolist() == list(range(params['epoch'] + 1))
assert data.uid.shape == (3, 2)
assert data.seed.values.tolist(
) == data.noise.values.tolist() + ['reference']
assert data.a.values.tolist() == [[0, 1000, 1000], [1, 1000, 1000]]
assert data.b.values.tolist() == [[1001, 0, 1001], [1001, 1, 1001]]
assert data.c.values.tolist() == [[2, 2, 2], [2, 2, 2]]
assert data.d.values.tolist() == [[3, 3, 3], [3, 3, 3]]
assert (data.obj.loc[dict(order=0, seed='a')].values.tolist() == list(
range(2002, 2002 + params['epoch'] + 1)))
def test_consolidate_results(client):
num_experiments = 5
num_replicates = 10
space = {
'a': 'uniform(lower=-1, upper=1)',
'b': 'uniform(lower=-1, upper=1)',
'c': 'uniform(lower=-1, upper=1)'
}
variables = {'d': 5}
defaults = {'e': 2, 'epoch': 5}
seed = 2
hpo = 'random_search'
objective = 'obj'
fidelity = Fidelity(5, 5, name='epoch').to_dict()
surrogate_budget = 10
hpo_budget = 5
configs = generate_hpos(list(range(num_experiments)), [hpo],
budget=surrogate_budget,
fidelity=fidelity,
search_space=space,
namespace=NAMESPACE,
defaults=defaults)
to_replicate = get_configs_to_replicate(configs, num_experiments)
reset_pool_size(configs['random_search'])
randomize_seeds(configs['random_search'], variables, seed)
variable_names = list(sorted(variables.keys()))
hpo_stats = fetch_all_hpo_stats(client, NAMESPACE)
namespaces = register_hpos(client, NAMESPACE, foo, configs, defaults,
hpo_stats)
worker = TrialWorker(URI, DATABASE, 0, None)
worker.max_retry = 0
worker.timeout = 0.02
worker.run()
data = defaultdict(dict)
hpos_ready, remainings = fetch_hpos_valid_curves(client, namespaces,
variable_names, data)
ready_configs = get_ready_configs(hpos_ready, configs, to_replicate)
replicates = generate_replicates(ready_configs,
data,
variables,
objective,
hpo_budget,
num_replicates,
early_stopping=False)
register(client, foo, NAMESPACE, replicates)
worker = TrialWorker(URI, DATABASE, 0, None)
worker.max_retry = 0
worker.timeout = 0.02
worker.run()
print(fetch_vars_stats(client, NAMESPACE))
data = fetch_hpos_replicates(client, configs, replicates, variable_names,
space, data)
data = consolidate_results(data)
assert len(data) == 1
assert len(data['random_search']) == 4
hpo_reps = data['random_search']
assert hpo_reps['ideal'].obj.shape == (6, surrogate_budget,
num_experiments)
assert hpo_reps['biased'].obj.shape == (6, num_replicates, num_experiments)
assert hpo_reps['simul-fix'].obj.shape == (6, num_replicates,
num_experiments)
assert hpo_reps['simul-free'].obj.shape == (6, num_replicates,
num_experiments)
def count_unique(attr):
return len(set(attr.values.reshape(-1).tolist()))
# Test sources of variation
# NOTE: In ideal, source of variation will vary across ideal after consolidation
# but it stays fixed during the HPO itself
assert count_unique(hpo_reps['ideal']['d']) == num_experiments
assert count_unique(hpo_reps['biased']['d']) == (num_replicates *
num_experiments)
assert count_unique(hpo_reps['simul-free']['d']) == (num_replicates *
num_experiments)
assert count_unique(hpo_reps['simul-fix']['d']) == num_experiments
# Test HPs
assert count_unique(hpo_reps['ideal']['a']) == (num_experiments *
surrogate_budget)
assert count_unique(hpo_reps['biased']['a']) == num_experiments
assert count_unique(hpo_reps['simul-free']['a']) == (num_replicates *
num_experiments)
assert count_unique(hpo_reps['simul-fix']['a']) == (num_replicates *
num_experiments)
assert numpy.allclose(hpo_reps['simul-free']['a'].values,
hpo_reps['simul-fix']['a'].values)