def test_random_seed(self):
import numpy as np
from deephyper.evaluator import Evaluator
from deephyper.problem import HpProblem
from deephyper.search.hps import CBO
problem = HpProblem()
problem.add_hyperparameter((0.0, 10.0), "x")
def run(config):
return config["x"]
create_evaluator = lambda: Evaluator.create(run, method="serial")
search = CBO(problem,
create_evaluator(),
random_state=42,
surrogate_model="DUMMY")
res1 = search.search(max_evals=4)
res1_array = res1[["x"]].to_numpy()
search = CBO(problem,
create_evaluator(),
random_state=42,
surrogate_model="DUMMY")
res2 = search.search(max_evals=4)
res2_array = res2[["x"]].to_numpy()
assert np.array_equal(res1_array, res2_array)
# test multi-objective
def run(config):
return config["x"], config["x"]
create_evaluator = lambda: Evaluator.create(run, method="serial")
search = CBO(problem,
create_evaluator(),
random_state=42,
surrogate_model="DUMMY")
res1 = search.search(max_evals=4)
res1_array = res1[["x"]].to_numpy()
search = CBO(problem,
create_evaluator(),
random_state=42,
surrogate_model="DUMMY")
res2 = search.search(max_evals=4)
res2_array = res2[["x"]].to_numpy()
assert np.array_equal(res1_array, res2_array)
def test_ambs():
create_evaluator = lambda: Evaluator.create(
run, method="process", method_kwargs={"num_workers": 1})
search = AMBS(
problem,
create_evaluator(),
random_state=42,
)
res1 = search.search(max_evals=4)
res1_array = res1[["x"]].to_numpy()
search.search(max_evals=100, timeout=1)
search = AMBS(
problem,
create_evaluator(),
random_state=42,
)
res2 = search.search(max_evals=4)
res2_array = res2[["x"]].to_numpy()
assert np.array_equal(res1_array, res2_array)
def test_agebo_with_hp(self):
import numpy as np
from deephyper.benchmark.nas import linearRegHybrid
from deephyper.evaluator import Evaluator
from deephyper.nas.run import run_debug_arch
from deephyper.search.nas import AgEBO
create_evaluator = lambda: Evaluator.create(run_debug_arch,
method="serial")
search = AgEBO(
linearRegHybrid.Problem,
create_evaluator(),
random_state=42,
)
res1 = search.search(max_evals=4)
res1_array = res1[[
"arch_seq", "batch_size", "learning_rate", "optimizer"
]].to_numpy()
search = AgEBO(
linearRegHybrid.Problem,
create_evaluator(),
random_state=42,
)
res2 = search.search(max_evals=4)
res2_array = res2[[
"arch_seq", "batch_size", "learning_rate", "optimizer"
]].to_numpy()
assert np.array_equal(res1_array, res2_array)
def test_ambsmixed_with_hp(self):
import numpy as np
from deephyper.benchmark.nas import linearRegHybrid
from deephyper.evaluator import Evaluator
from deephyper.nas.run import run_debug_arch
from deephyper.search.nas import AMBSMixed
create_evaluator = lambda: Evaluator.create(run_debug_arch,
method="serial")
search = AMBSMixed(
linearRegHybrid.Problem,
create_evaluator(),
random_state=42,
)
res1 = search.search(max_evals=4)
res1_array = res1[["arch_seq"]].to_numpy()
search = AMBSMixed(
linearRegHybrid.Problem,
create_evaluator(),
random_state=42,
)
res2 = search.search(max_evals=4)
res2_array = res2[["arch_seq"]].to_numpy()
assert np.array_equal(res1_array, res2_array)
def test_sample_types_no_cat(self):
import numpy as np
from deephyper.evaluator import Evaluator
from deephyper.problem import HpProblem
from deephyper.search.hps import CBO
problem = HpProblem()
problem.add_hyperparameter((0, 10), "x_int")
problem.add_hyperparameter((0.0, 10.0), "x_float")
def run(config):
assert np.issubdtype(type(config["x_int"]), np.integer)
assert np.issubdtype(type(config["x_float"]), float)
return 0
create_evaluator = lambda: Evaluator.create(run, method="serial")
CBO(problem,
create_evaluator(),
random_state=42,
surrogate_model="DUMMY").search(10)
CBO(problem, create_evaluator(), random_state=42,
surrogate_model="RF").search(10)
def test_regevo_without_hp():
import numpy as np
from deephyper.benchmark.nas import linearReg
from deephyper.evaluator import Evaluator
from deephyper.nas.run import run_debug_arch
from deephyper.search.nas import RegularizedEvolution
create_evaluator = lambda: Evaluator.create(run_debug_arch,
method="serial")
search = RegularizedEvolution(
linearReg.Problem,
create_evaluator(),
random_state=42,
)
res1 = search.search(max_evals=4)
res1_array = res1[["arch_seq"]].to_numpy()
search = RegularizedEvolution(
linearReg.Problem,
create_evaluator(),
random_state=42,
)
res2 = search.search(max_evals=4)
res2_array = res2[["arch_seq"]].to_numpy()
assert np.array_equal(res1_array, res2_array)
def __init__(self, problem, run, evaluator, **kwargs):
super().__init__(problem, run, evaluator, **kwargs)
# set in super : self.problem
# set in super : self.run_func
# set in super : self.evaluator
self.evaluator = Evaluator.create(self.run_func,
cache_key=key,
method=evaluator)
self.num_episodes = kwargs.get('num_episodes')
if self.num_episodes is None:
self.num_episodes = math.inf
self.reward_rule = util.load_attr_from(
'deephyper.search.nas.agent.utils.' + kwargs['reward_rule'])
self.space = self.problem.space
logger.debug(f'evaluator: {type(self.evaluator)}')
self.num_agents = MPI.COMM_WORLD.Get_size(
) - 1 # one is the parameter server
self.rank = MPI.COMM_WORLD.Get_rank()
logger.debug(f'num_agents: {self.num_agents}')
logger.debug(f'rank: {self.rank}')
def test_regevo_without_hp():
create_evaluator = lambda: Evaluator.create(
run_debug_arch, method="process", method_kwargs={"num_workers": 1}
)
search = RegularizedEvolution(
linearReg.Problem,
create_evaluator(),
random_state=42,
)
res1 = search.search(max_evals=4)
res1_array = res1[["arch_seq"]].to_numpy()
search.search(max_evals=100, timeout=1)
search = RegularizedEvolution(
linearReg.Problem,
create_evaluator(),
random_state=42,
)
res2 = search.search(max_evals=4)
res2_array = res2[["arch_seq"]].to_numpy()
assert np.array_equal(res1_array, res2_array)
def test_agebo_with_hp():
create_evaluator = lambda: Evaluator.create(
run_debug_arch, method="process", method_kwargs={"num_workers": 1})
search = AgEBO(
linearRegHybrid.Problem,
create_evaluator(),
random_state=42,
)
res1 = search.search(max_evals=4)
res1_array = res1[["arch_seq", "batch_size", "learning_rate",
"optimizer"]].to_numpy()
search.search(max_evals=100, timeout=1)
search = AgEBO(
linearRegHybrid.Problem,
create_evaluator(),
random_state=42,
)
res2 = search.search(max_evals=4)
res2_array = res2[["arch_seq", "batch_size", "learning_rate",
"optimizer"]].to_numpy()
assert np.array_equal(res1_array, res2_array)
def test_agebo_without_hp():
create_evaluator = lambda: Evaluator.create(
run_debug_arch, method="process", method_kwargs={"num_workers": 1})
with pytest.raises(ValueError): # timeout should be an int
search = AgEBO(linearReg.Problem, create_evaluator(), random_state=42)
def main():
from deephyper.search.nas.agent.run_func_math import run_func
evaluator = Evaluator.create(run_func, cache_key=key, method='threadPool')
train(
num_iter=500,
num_episodes_per_iter=10,
seed=2018,
evaluator=evaluator)
def test_gp(self):
from deephyper.evaluator import Evaluator
from deephyper.problem import HpProblem
from deephyper.search.hps import CBO
# test float hyperparameters
problem = HpProblem()
problem.add_hyperparameter((0.0, 10.0), "x")
def run(config):
return config["x"]
CBO(
problem,
Evaluator.create(run, method="serial"),
random_state=42,
surrogate_model="GP",
).search(10)
# test int hyperparameters
problem = HpProblem()
problem.add_hyperparameter((0, 10), "x")
def run(config):
return config["x"]
CBO(
problem,
Evaluator.create(run, method="serial"),
random_state=42,
surrogate_model="GP",
).search(10)
# test categorical hyperparameters
problem = HpProblem()
problem.add_hyperparameter([f"{i}" for i in range(10)], "x")
def run(config):
return int(config["x"])
CBO(
problem,
Evaluator.create(run, method="serial"),
random_state=42,
surrogate_model="GP",
).search(10)
def main(**kwargs):
"""
:meta private:
"""
sys.path.insert(0, ".")
if kwargs["verbose"]:
logging.basicConfig(filename="deephyper.log", level=logging.INFO)
search_name = sys.argv[2]
# load search class
logging.info(f"Loading the search '{search_name}'...")
search_cls = load_attr(HPS_SEARCHES[search_name])
# load problem
logging.info("Loading the problem...")
problem = load_attr(kwargs.pop("problem"))
# load run function
logging.info("Loading the run-function...")
run_function = load_attr(kwargs.pop("run_function"))
# filter arguments from evaluator class signature
logging.info("Loading the evaluator...")
evaluator_method = kwargs.pop("evaluator")
base_arguments = ["num_workers", "callbacks"]
evaluator_kwargs = {k:kwargs.pop(k) for k in base_arguments}
# remove the arguments from unused evaluator
for method in EVALUATORS.keys():
evaluator_method_kwargs = {k[len(evaluator_method)+1:]:kwargs.pop(k) for k in kwargs.copy() if method in k}
if method == evaluator_method:
evaluator_kwargs = {**evaluator_kwargs, **evaluator_method_kwargs}
# create evaluator
logging.info(f"Evaluator(method={evaluator_method}, method_kwargs={evaluator_kwargs}")
evaluator = Evaluator.create(
run_function, method=evaluator_method, method_kwargs=evaluator_kwargs
)
logging.info(f"Evaluator has {evaluator.num_workers} workers available.")
# filter arguments from search class signature
# remove keys in evaluator_kwargs
kwargs = {k:v for k,v in kwargs.items() if k not in evaluator_kwargs}
max_evals = kwargs.pop("max_evals")
timeout = kwargs.pop("timeout")
# TODO: How about checkpointing and transfer learning?
# execute the search
# remaining kwargs are for the search
logging.info(f"Evaluator has {evaluator.num_workers} workers available.")
search = search_cls(problem, evaluator, **kwargs)
search.search(max_evals=max_evals, timeout=timeout)
def test_regovo_with_hp():
create_evaluator = lambda: Evaluator.create(
run_debug_arch, method="process", method_kwargs={"num_workers": 1}
)
with pytest.raises(ValueError): # timeout should be an int
search = RegularizedEvolution(
linearRegHybrid.Problem, create_evaluator(), random_state=42
)
def test_wrong_evaluator(self):
from deephyper.evaluator import Evaluator
with pytest.raises(DeephyperRuntimeError):
evaluator = Evaluator.create(
run,
method="threadPool",
method_kwargs={
"num_workers": 1,
},
)
def evaluate_search(self, search_cls, problem):
from deephyper.evaluator import Evaluator
from deephyper.nas.run import run_debug_arch
# Test "max_evals" stopping criteria
evaluator = Evaluator.create(run_debug_arch, method="serial")
search = search_cls(problem, evaluator)
res = search.search(max_evals=10)
self.assertEqual(len(res), 10)
def test_regovo_with_hp():
from deephyper.benchmark.nas import linearRegHybrid
from deephyper.evaluator import Evaluator
from deephyper.nas.run import run_debug_arch
from deephyper.search.nas import RegularizedEvolution
create_evaluator = lambda: Evaluator.create(run_debug_arch,
method="serial")
with pytest.raises(ValueError): # timeout should be an int
search = RegularizedEvolution(linearRegHybrid.Problem,
create_evaluator(),
random_state=42)
def _test_mpicomm_evaluator():
"""Test the MPICommEvaluator"""
configs = [{"x": i} for i in range(4)]
with Evaluator.create(
run,
method="mpicomm",
) as evaluator:
if evaluator is not None:
evaluator.submit(configs)
results = evaluator.gather("ALL")
objectives = sorted([job.result for job in results])
assert objectives == list(range(4))
def evaluate_search(self, search_cls, problem):
# Test "max_evals" stopping criteria
evaluator = Evaluator.create(run_debug_arch,
method="subprocess",
method_kwargs={"num_workers": 1})
search = search_cls(problem, evaluator)
res = search.search(max_evals=10)
self.assertEqual(len(res), 10)
# Test "max_evals" and "timeout" stopping criterias
evaluator = Evaluator.create(run_debug_slow,
method="subprocess",
method_kwargs={"num_workers": 1})
search = search_cls(problem, evaluator)
with pytest.raises(TypeError): # timeout should be an int
res = search.search(max_evals=10, timeout=1.0)
t1 = time.time()
res = search.search(max_evals=10, timeout=1)
d = time.time() - t1
self.assertAlmostEqual(d, 1, delta=0.1)
def test_agebo_without_hp(self):
from deephyper.benchmark.nas import linearReg
from deephyper.evaluator import Evaluator
from deephyper.nas.run import run_debug_arch
from deephyper.search.nas import AgEBO
create_evaluator = lambda: Evaluator.create(run_debug_arch,
method="serial")
# ValueError: No hyperparameter space was defined for this problem
with pytest.raises(ValueError):
search = AgEBO(
linearReg.Problem,
create_evaluator(),
random_state=42,
)
def test_random_search():
create_evaluator = lambda: Evaluator.create(
run_debug_arch, method="process", method_kwargs={"num_workers": 1})
search = Random(linearReg.Problem, create_evaluator(), random_state=42)
res1 = search.search(max_evals=4)
search.search(max_evals=100, timeout=1)
search = Random(linearReg.Problem, create_evaluator(), random_state=42)
res2 = search.search(max_evals=4)
assert np.array_equal(res1["arch_seq"].to_numpy(),
res2["arch_seq"].to_numpy())
def _on_done(job): #def _on_done(job, process_data):
output = job.read_file_in_workdir(f'{job.name}.out')
# process_data(job)
#args = job.args
#args = args.replace("\'", "")
#with open('test.json', 'w') as f:
# f.write(args)
#
#with open('test.json', 'r') as f:
# args = json.load(f)
output = Evaluator._parse(output)
#job.data['reward'] = output
#job.data['arch_seq'] = args['arch_seq']
#job.data['id_worker'] = args['w']
#job.save()
return output
def __init__(self, problem, run, evaluator, **kwargs):
_args = vars(self.parse_args(''))
_args.update(kwargs)
_args['problem'] = problem
_args['run'] = run
self.args = Namespace(**_args)
self.problem = util.generic_loader(problem, 'Problem')
self.run_func = util.generic_loader(run, 'run')
logger.info('Evaluator will execute the function: ' + run)
self.evaluator = Evaluator.create(self.run_func, method=evaluator)
self.num_workers = self.evaluator.num_workers
logger.info(f'Options: ' + pformat(self.args.__dict__, indent=4))
logger.info('Hyperparameter space definition: ' +
pformat(self.problem.space, indent=4))
logger.info(f'Created {self.args.evaluator} evaluator')
logger.info(f'Evaluator: num_workers is {self.num_workers}')
def test_random_search(self):
import numpy as np
from deephyper.benchmark.nas import linearReg
from deephyper.evaluator import Evaluator
from deephyper.nas.run import run_debug_arch
from deephyper.search.nas import Random
create_evaluator = lambda: Evaluator.create(run_debug_arch,
method="serial")
search = Random(linearReg.Problem, create_evaluator(), random_state=42)
res1 = search.search(max_evals=4)
search = Random(linearReg.Problem, create_evaluator(), random_state=42)
res2 = search.search(max_evals=4)
assert np.array_equal(res1["arch_seq"].to_numpy(),
res2["arch_seq"].to_numpy())
def test_sample_types_conditional(self):
import ConfigSpace as cs
import numpy as np
from deephyper.evaluator import Evaluator
from deephyper.problem import HpProblem
from deephyper.search.hps import CBO
problem = HpProblem()
# choices
choice = problem.add_hyperparameter(
name="choice",
value=["choice1", "choice2"],
)
# integers
x1_int = problem.add_hyperparameter(name="x1_int", value=(1, 10))
x2_int = problem.add_hyperparameter(name="x2_int", value=(1, 10))
# conditions
cond_1 = cs.EqualsCondition(x1_int, choice, "choice1")
cond_2 = cs.EqualsCondition(x2_int, choice, "choice2")
problem.add_condition(cond_1)
problem.add_condition(cond_2)
def run(config):
if config["choice"] == "choice1":
assert np.issubdtype(type(config["x1_int"]), np.integer)
else:
assert np.issubdtype(type(config["x2_int"]), np.integer)
return 0
create_evaluator = lambda: Evaluator.create(run, method="serial")
CBO(problem,
create_evaluator(),
random_state=42,
surrogate_model="DUMMY").search(10)
def test_quickstart(self):
from deephyper.problem import HpProblem
from deephyper.search.hps import CBO
from deephyper.evaluator import Evaluator
# define the variable you want to optimize
problem = HpProblem()
problem.add_hyperparameter((-10.0, 10.0), "x")
# define the evaluator to distribute the computation
evaluator = Evaluator.create(
run,
method="subprocess",
method_kwargs={
"num_workers": 2,
},
)
# define you search and execute it
search = CBO(problem, evaluator)
results = search.search(max_evals=15)
def test_thread_process_subprocess(self):
from deephyper.evaluator import Evaluator
for method in ["thread", "process", "subprocess"]:
evaluator = Evaluator.create(
run,
method=method,
method_kwargs={
"num_workers": 1,
},
)
configs = [{"x": i} for i in range(10)]
evaluator.submit(configs)
jobs = evaluator.gather("ALL")
jobs.sort(key=lambda j: j.config["x"])
for config, job in zip(configs, jobs):
assert config["x"] == job.config["x"]
evaluator.submit(configs)
jobs = evaluator.gather("BATCH", size=1)
assert 1 <= len(jobs) and len(jobs) <= len(configs)
def __init__(self,
problem,
evaluator,
random_state=None,
log_dir=".",
verbose=0,
**kwargs):
# get the __init__ parameters
self._init_params = locals()
self._call_args = []
self._problem = copy.deepcopy(problem)
# if a callable is directly passed wrap it around the serial evaluator
if not (isinstance(evaluator, Evaluator)) and callable(evaluator):
self._evaluator = Evaluator.create(
evaluator,
method="serial",
method_kwargs={"callbacks": [TqdmCallback()]},
)
else:
self._evaluator = evaluator
self._seed = None
if type(random_state) is int:
self._seed = random_state
self._random_state = np.random.RandomState(random_state)
elif isinstance(random_state, np.random.RandomState):
self._random_state = random_state
else:
self._random_state = np.random.RandomState()
# Create logging directory if does not exist
self._log_dir = os.path.abspath(log_dir)
pathlib.Path(log_dir).mkdir(parents=False, exist_ok=True)
self._verbose = verbose
def test_ray(self):
from deephyper.evaluator import Evaluator
def run(config):
return config["x"]
evaluator = Evaluator.create(
run,
method="ray",
method_kwargs={
"num_cpus": 1,
},
)
configs = [{"x": i} for i in range(10)]
evaluator.submit(configs)
jobs = evaluator.gather("ALL")
jobs.sort(key=lambda j: j.config["x"])
for config, job in zip(configs, jobs):
assert config["x"] == job.config["x"]
evaluator.submit(configs)
jobs = evaluator.gather("BATCH", size=1)
assert 1 <= len(jobs) and len(jobs) <= len(configs)
print(problem)
# %%
# Then, we define a centralized Bayesian optimization (CBO) search (i.e., master-worker architecture) which uses the Random-Forest regressor as default surrogate model. We will compare the ``ignore`` strategy which filters-out failed configurations, the ``mean`` strategy which replaces a failure by the running mean of collected objectives and the ``min`` strategy which replaces by the running min of collected objectives.
from deephyper.search.hps import CBO
from deephyper.evaluator import Evaluator
from deephyper.evaluator.callback import TqdmCallback
results = {}
max_evals = 30
for failure_strategy in ["ignore", "mean", "min"]:
# for failure_strategy in ["min"]:
print(f"Executing failure strategy: {failure_strategy}")
evaluator = Evaluator.create(
run, method="serial", method_kwargs={"callbacks": [TqdmCallback(max_evals)]}
)
search = CBO(
problem,
evaluator,
filter_failures=failure_strategy,
log_dir=f"search_{failure_strategy}",
random_state=42,
)
results[failure_strategy] = search.search(max_evals)
# %%
# Finally we plot the collected results
import matplotlib.pyplot as plt
import numpy as np
