def test_random_wrapper(show_plots):
with NumpySeed(100):
tile_shape = (28, 35)
n_examples = 10
dset = GridEmnistObjectDetectionDataset(min_chars=25,
max_chars=25,
n_patch_examples=100,
n_examples=n_examples,
draw_shape_grid=(5, 5),
image_shape=(4 * 14, 5 * 14),
draw_offset=(0, 0),
spacing=(-5, -5),
characters=list(range(10)),
colours="white",
postprocessing="random",
tile_shape=tile_shape,
n_samples_per_image=4)
assert dset.x[0].shape == tile_shape + (3, )
assert dset.image_shape == tile_shape
assert len(dset.x) == n_examples * 4
assert dset.n_examples == n_examples * 4
if show_plots:
dset.visualize()
def test_emnist_dataset():
with NumpySeed(100):
kwargs = dict(shape=(14, 14),
include_blank=True,
one_hot=False,
balance=True,
classes=[1, 2, 3],
n_examples=100)
dataset = EmnistDataset(**kwargs)
assert set(dataset.y.flatten()) == set([0, 1, 2, 3])
assert dataset.x.shape == (100, 14, 14)
assert dataset.y.shape == (100, 1)
assert dataset.x.min() == 0.0
assert 0.0 <= dataset.x.min() <= 10.0
assert 200.0 <= dataset.x.max() <= 255.0
kwargs['one_hot'] = True
dataset = EmnistDataset(**kwargs)
assert dataset.x.shape == (100, 14, 14)
assert dataset.y.shape == (100, 4)
assert (dataset.y.sum(1) == 1).all()
assert ((dataset.y == 0) | (dataset.y == 1)).all()
assert 0.0 <= dataset.x.min() <= 10.0
assert 200.0 <= dataset.x.max() <= 255.0
def _test_gradient(device):
if device == "gpu" and visible_gpu():
pytest.xfail("no gpu is visible")
with NumpySeed(100):
with tf.device('/{}:0'.format(device)):
sprites, scales, offsets, backgrounds = get_data(random_alpha=True,
squash=0.99)
sprites_tf = constant_op.constant(sprites)
scales_tf = constant_op.constant(scales)
offsets_tf = constant_op.constant(offsets)
backgrounds_tf = constant_op.constant(backgrounds)
images = render_sprites.render_sprites(sprites_tf, scales_tf,
offsets_tf, backgrounds_tf)
sess = get_session()
with sess.as_default():
with tf.device(device):
err = gradient_checker.compute_gradient_error(
[sprites_tf, scales_tf, offsets_tf, backgrounds_tf], [
sprites.shape, scales.shape, offsets.shape,
backgrounds.shape
],
images,
backgrounds.shape,
[sprites, scales, offsets, backgrounds],
delta=0.002)
print("Jacobian error: {}".format(err))
threshold = 2e-4
assert err < threshold, "Jacobian error ({}) exceeded threshold ({})".format(
err, threshold)
def test_omniglot_dataset():
with NumpySeed(100):
classes = [
'Cyrillic,17', 'Mkhedruli_(Georgian),5', 'Bengali,23',
'Mongolian,19', 'Malayalam,3', 'Ge_ez,15', 'Glagolitic,33',
'Tagalog,11', 'Gujarati,23', 'Old_Church_Slavonic_(Cyrillic),7'
] # Chosen randomly from set of all omniglot characters.
indices = [1, 3, 5, 7, 9]
kwargs = dict(shape=(14, 14),
include_blank=True,
one_hot=False,
indices=indices,
classes=classes)
n_classes = len(classes) + 1
n_examples = len(indices) * n_classes
dataset = OmniglotDataset(**kwargs)
assert set(dataset.y.flatten()) == set(range(n_classes))
assert dataset.x.shape == (n_examples, 14, 14)
assert dataset.y.shape == (n_examples, 1)
assert dataset.x.min() == 0.0
assert 0.0 <= dataset.x.min() <= 10.0
assert 200.0 <= dataset.x.max() <= 255.0
kwargs['one_hot'] = True
dataset = OmniglotDataset(**kwargs)
assert dataset.x.shape == (n_examples, 14, 14)
assert dataset.y.shape == (n_examples, n_classes)
assert (dataset.y.sum(1) == 1).all()
assert ((dataset.y == 0) | (dataset.y == 1)).all()
assert 0.0 <= dataset.x.min() <= 10.0
assert 200.0 <= dataset.x.max() <= 255.0
def __init__(self):
train_seed, val_seed, test_seed = 0, 1, 2
perm_seed = 4
n_episodes = count_episodes(cfg.atari_game, cfg.after_warp)
with NumpySeed(perm_seed):
perm = np.random.permutation(n_episodes)
n_val_episodes = max(1, int(cfg.val_fraction*n_episodes))
train_end = n_val_episodes
val_end = n_episodes - n_val_episodes
if cfg.do_train:
train_episode_range = (None, train_end)
else:
train_episode_range = (None, 5)
val_episode_range = (train_end, val_end)
test_episode_range = (val_end, None)
train_episode_indices = perm[slice(*train_episode_range)]
val_episode_indices = perm[slice(*val_episode_range)]
test_episode_indices = perm[slice(*test_episode_range)]
self.dataset = dict(
train=AtariLongVideoVideoDataset(seed=train_seed, episode_indices=train_episode_indices,),
val=AtariLongVideoVideoDataset(seed=val_seed, episode_indices=val_episode_indices,),
test=AtariLongVideoVideoDataset(seed=test_seed, episode_indices=test_episode_indices,),
)
def test_omniglot(build_function, test_config):
with NumpySeed(83849):
classes = ["Greek,18", "Greek,19"]
n_classes = len(classes)
config = OMNIGLOT_CONFIG.copy(
patience=10000,
build_function=build_function,
classes=classes,
n_controller_units=100,
threshold=0.2,
stopping_criteria="01_loss,min",
train_indices=list(range(15)),
val_indices=list(range(15, 20)),
test_indices=list(range(15, 20)),
)
config.update(test_config)
checkpoint_dir = make_checkpoint_dir(config, 'test_omni')
output_size = n_classes + 1
name_params = 'classes include_blank shape n_controller_units'
g, sess = get_graph_and_session()
with ExitStack() as stack:
stack.enter_context(g.as_default())
stack.enter_context(sess)
stack.enter_context(sess.as_default())
stack.enter_context(config)
f = build_function()
f.set_pretraining_params(config, name_params, checkpoint_dir)
x_ph = tf.placeholder(tf.float32, (None, ) + cfg.shape)
inference = f(x_ph, output_size, False)
test_dataset = OmniglotDataset(indices=cfg.test_indices,
one_hot=True)
_eval_model(test_dataset, inference, x_ph)
g, sess = get_graph_and_session()
with ExitStack() as stack:
stack.enter_context(g.as_default())
stack.enter_context(sess)
stack.enter_context(sess.as_default())
stack.enter_context(config)
f = build_function()
f.set_pretraining_params(config, name_params, checkpoint_dir)
x_ph = tf.placeholder(tf.float32, (None, ) + cfg.shape)
inference = f(x_ph, output_size, False)
assert f.was_loaded is True
test_dataset = OmniglotDataset(indices=cfg.test_indices,
one_hot=True)
_eval_model(test_dataset, inference, x_ph)
def test_emnist_pretrained(build_function, test_config):
with NumpySeed(83849):
n_classes = 10
classes = EmnistDataset.sample_classes(n_classes)
config = EMNIST_CONFIG.copy(build_function=build_function,
classes=classes,
threshold=0.1,
stopping_criteria="01_loss,min",
n_controller_units=100,
n_train=10000)
config.update(test_config)
checkpoint_dir = make_checkpoint_dir(config, 'test_emnist')
output_size = n_classes + 1
name_params = 'classes include_blank shape n_controller_units'
g, sess = get_graph_and_session()
with ExitStack() as stack:
stack.enter_context(g.as_default())
stack.enter_context(sess)
stack.enter_context(sess.as_default())
stack.enter_context(config)
f = build_function()
f.set_pretraining_params(config, name_params, checkpoint_dir)
x_ph = tf.placeholder(tf.float32, (None, ) + cfg.shape)
inference = f(x_ph, output_size, False)
assert f.was_loaded is False
with config:
test_dataset = EmnistDataset(n_examples=cfg.n_val,
one_hot=True)
_eval_model(test_dataset, inference, x_ph)
g, sess = get_graph_and_session()
with ExitStack() as stack:
stack.enter_context(g.as_default())
stack.enter_context(sess)
stack.enter_context(sess.as_default())
stack.enter_context(config)
f = build_function()
f.set_pretraining_params(config, name_params, checkpoint_dir)
x_ph = tf.placeholder(tf.float32, (None, ) + cfg.shape)
inference = f(x_ph, output_size, False)
assert f.was_loaded is True
with config:
test_dataset = EmnistDataset(n_examples=cfg.n_val,
one_hot=True)
_eval_model(test_dataset, inference, x_ph)
def test_determinism(dataset, test_config):
build_function = build_mlp # Can't use build_lenet here as it is slightly non-deterministic for reasons unknown.
with NumpySeed(83849):
n_classes = 10
info = determinism_info[dataset]
classes = info['sample_classes'](n_classes)
config = info['config'].copy(
build_function=build_function,
classes=classes,
n_controller_units=100,
threshold=0.2,
stopping_criteria="01_loss,min",
seed=334324923,
display_step=100,
eval_step=100,
max_steps=1001,
tee=False,
n_train=500,
)
config.update(test_config)
name_params = 'classes include_blank shape n_controller_units'
output_size = n_classes + 1
n_repeats = 5
output = defaultdict(int)
dir_names = []
try:
for i in range(n_repeats):
checkpoint_dir = make_checkpoint_dir(
config, 'test_{}_{}'.format(dataset, i))
dir_names.append(checkpoint_dir)
_train_classifier(build_function, config, name_params,
output_size, checkpoint_dir)
o = _get_deterministic_output(checkpoint_dir)
output[o] += 1
if len(output) != 1:
for o in sorted(output):
print("\n" + "*" * 80)
print("The following occurred {} times:\n".format(
output[o]))
print(o)
raise Exception("Results were not deterministic.")
finally:
for dn in dir_names:
try:
shutil.rmtree(dn)
except FileNotFoundError:
pass
def __init__(self, **kwargs):
start = time.time()
print("Trying to find dataset in cache...")
directory = kwargs.get(
"data_dir",
os.path.join(cfg.data_dir, "cached_datasets",
self.__class__.__name__))
os.makedirs(directory, exist_ok=True)
params = self.param_values()
param_hash = get_param_hash(params)
print(self.__class__.__name__)
print("Params:")
pprint.pprint(params)
print("Param hash: {}".format(param_hash))
self.directory = os.path.join(directory, str(param_hash))
cfg_filename = os.path.join(self.directory, "config.txt")
if not os.path.exists(cfg_filename):
# Start fresh
try:
shutil.rmtree(self.directory)
except FileNotFoundError:
pass
print("Directory for dataset not found, creating...")
os.makedirs(self.directory, exist_ok=False)
try:
with NumpySeed(self.seed):
self._make()
print("Done creating dataset.")
except BaseException:
try:
shutil.rmtree(self.directory)
except FileNotFoundError:
pass
raise
with open(cfg_filename, 'w') as f:
f.write(pprint.pformat(params))
else:
print("Found.")
print("Took {} seconds.".format(time.time() - start))
print("Features for dataset: ")
pprint.pprint(self.features)
print()
def test_emnist_load_or_train(build_function, test_config):
with NumpySeed(83849):
n_classes = 10
classes = EmnistDataset.sample_classes(n_classes)
config = EMNIST_CONFIG.copy(build_function=build_function,
classes=classes,
threshold=0.1,
stopping_criteria="01_loss,min",
n_controller_units=100,
n_train=10000)
config.update(test_config)
checkpoint_dir = make_checkpoint_dir(config, 'test_emnist')
output_size = n_classes + 1
g, sess = get_graph_and_session()
with ExitStack() as stack:
stack.enter_context(g.as_default())
stack.enter_context(sess)
stack.enter_context(sess.as_default())
stack.enter_context(config)
f = build_function()
x_ph = tf.placeholder(tf.float32, (None, ) + cfg.shape)
inference = f(x_ph, output_size, False)
loaded = load_or_train(config, f.scope,
os.path.join(checkpoint_dir, 'model'))
assert not loaded
test_dataset = EmnistDataset(n_examples=cfg.n_val, one_hot=True)
_eval_model(test_dataset, inference, x_ph)
g, sess = get_graph_and_session()
with ExitStack() as stack:
stack.enter_context(g.as_default())
stack.enter_context(sess)
stack.enter_context(sess.as_default())
stack.enter_context(config)
f = build_function()
x_ph = tf.placeholder(tf.float32, (None, ) + cfg.shape)
inference = f(x_ph, output_size, False)
loaded = load_or_train(config, f.scope,
os.path.join(checkpoint_dir, 'model'))
assert loaded
test_dataset = EmnistDataset(n_examples=cfg.n_val, one_hot=True)
_eval_model(test_dataset, inference, x_ph)
def test_cache_dataset():
with NumpySeed(100):
kwargs = dict(shape=(14, 14),
include_blank=True,
one_hot=False,
balance=True,
classes=[1, 2, 3],
n_examples=100)
cache_dir = "/tmp/dps_test/cached_datasets"
shutil.rmtree(cache_dir, ignore_errors=True)
with remove(cache_dir):
dataset = EmnistDataset(**kwargs, use_dataset_cache=cache_dir)
assert not dataset.loaded
assert set(dataset.y.flatten()) == set([0, 1, 2, 3])
assert dataset.x.shape == (100, 14, 14)
assert dataset.y.shape == (100, 1)
assert dataset.x.min() == 0.0
assert 0.0 <= dataset.x.min() <= 10.0
assert 200.0 <= dataset.x.max() <= 255.0
dataset2 = EmnistDataset(**kwargs, use_dataset_cache=cache_dir)
assert dataset2.loaded
assert set(dataset2.y.flatten()) == set([0, 1, 2, 3])
assert dataset2.x.shape == (100, 14, 14)
assert dataset2.y.shape == (100, 1)
assert dataset2.x.min() == 0.0
assert 0.0 <= dataset2.x.min() <= 10.0
assert 200.0 <= dataset2.x.max() <= 255.0
assert (dataset.x == dataset2.x).all()
assert (dataset.y == dataset2.y).all()
dataset3 = EmnistDataset(**kwargs, use_dataset_cache=False)
assert set(dataset3.y.flatten()) == set([0, 1, 2, 3])
assert dataset3.x.shape == (100, 14, 14)
assert dataset3.y.shape == (100, 1)
assert dataset3.x.min() == 0.0
assert 0.0 <= dataset3.x.min() <= 10.0
assert 200.0 <= dataset3.x.max() <= 255.0
assert (dataset3.x != dataset2.x).any()
assert (dataset3.y != dataset2.y).any()
def __init__(self):
train_seed, val_seed, test_seed = 0, 1, 2
perm_seed = 4
n_episodes = count_episodes(cfg.atari_game, cfg.after_warp)
with NumpySeed(perm_seed):
perm = np.random.permutation(n_episodes)
n_val_episodes = max(1, int(cfg.val_fraction*n_episodes))
train_end = n_episodes - 2*n_val_episodes
val_end = n_episodes - n_val_episodes
if cfg.do_train:
train_episode_range = (None, train_end)
else:
train_episode_range = (None, 1)
val_episode_range = (train_end, val_end)
test_episode_range = (val_end, None)
train_episode_indices = perm[slice(*train_episode_range)]
val_episode_indices = perm[slice(*val_episode_range)]
test_episode_indices = perm[slice(*test_episode_range)]
get_annotations = not cfg.do_train
train = AtariVideoDataset(
max_examples=int(cfg.n_train), seed=train_seed,
episode_indices=train_episode_indices, get_annotations=False,
sample_density=cfg.train_sample_density)
val = AtariVideoDataset(
max_examples=int(cfg.n_val), seed=val_seed,
episode_indices=val_episode_indices, get_annotations=get_annotations,
sample_density=cfg.val_sample_density)
test = AtariVideoDataset(
max_examples=int(cfg.n_val), seed=test_seed,
episode_indices=test_episode_indices, get_annotations=get_annotations,
sample_density=cfg.val_sample_density)
self.datasets = dict(train=train, val=val, test=test)
def f(game, modes, K, N, in_colour, seed):
print("Running clustering...")
with NumpySeed(seed):
dset = StaticAtariDataset(game=game, after_warp=not in_colour)
X = dset.x
if N:
X = X[:N, ...]
else:
N = X.shape[0]
if not in_colour:
X = X[..., 0]
image_shape = X.shape[1:]
X = X.reshape(N, -1)
if modes:
km = KModes(n_clusters=K, init='Huang', n_init=1, verbose=1)
km.fit(X)
centroids = km.cluster_centroids_
centroids = centroids.reshape(K, *image_shape)
discrete_centroids = centroids
centroids = centroids / 255.
labels = km.labels_
else:
result = k_means(X / 255., K)
centroids = result[0]
discrete_centroids = np.uint8(np.floor(centroids * 255))
centroids = np.maximum(centroids, 1e-6)
centroids = np.minimum(centroids, 1 - 1e-6)
centroids = centroids.reshape(K, *image_shape)
labels = np.array(labels)
X = X.reshape(N, *image_shape)
return centroids, discrete_centroids, labels, X
print("Done.")
def run(device, show_plots, process_data=None, **get_data_kwargs):
with NumpySeed(100):
data = get_data(**get_data_kwargs)
if process_data is None:
process_data = lambda *x: x
sprites, scales, offsets, backgrounds = process_data(*data)
with tf.device('/{}:0'.format(device)):
images = render_sprites.render_sprites(sprites, scales, offsets,
backgrounds)
sess = get_session()
result = sess.run(images)
result = np.clip(result, 1e-6, 1 - 1e-6)
if show_plots:
import matplotlib.pyplot as plt
fig, (ax1, ax2) = plt.subplots(1, 2)
ax1.imshow(result[0])
ax2.imshow(result[1])
plt.show()
def test_visual_arithmetic_dataset():
with NumpySeed(100):
n_examples = 100
kwargs = dict(reductions="sum",
min_digits=2,
max_digits=3,
digits=list(range(5)),
patch_shape=(14, 14),
image_shape=(50, 50),
largest_digit=1000,
one_hot=False,
n_patch_examples=100,
n_examples=n_examples)
dataset = VisualArithmeticDataset(**kwargs)
assert dataset.x.shape == (n_examples, 50, 50)
assert dataset.y.shape == (n_examples, 1)
assert set(dataset.y.flatten()).issubset(set(range(13)))
_kwargs = kwargs.copy()
_kwargs.update(image_shape=(100, 100), draw_shape=(50, 50))
dataset = VisualArithmeticDataset(**_kwargs)
assert dataset.x.shape == (n_examples, 100, 100)
assert dataset.y.shape == (n_examples, 1)
assert set(dataset.y.flatten()).issubset(set(range(13)))
assert (dataset.x[:, 50:, :] == 0).all()
assert (dataset.x[:, :, 50:] == 0).all()
_kwargs = kwargs.copy()
_kwargs.update(image_shape=(100, 100),
draw_shape=(50, 50),
draw_offset=(50, 50))
dataset = VisualArithmeticDataset(**_kwargs)
assert dataset.x.shape == (n_examples, 100, 100)
assert dataset.y.shape == (n_examples, 1)
assert set(dataset.y.flatten()).issubset(set(range(13)))
assert (dataset.x[:, :50, :] == 0).all()
assert (dataset.x[:, :, :50] == 0).all()
_kwargs = kwargs.copy()
_kwargs.update(largest_digit=5)
dataset = VisualArithmeticDataset(**_kwargs)
assert dataset.x.shape == (n_examples, 50, 50)
assert dataset.y.shape == (n_examples, 1)
assert set(dataset.y.flatten()).issubset(set(range(6)))
_kwargs = kwargs.copy()
_kwargs.update(one_hot=True, largest_digit=5)
dataset = VisualArithmeticDataset(**_kwargs)
assert dataset.x.shape == (n_examples, 50, 50)
assert dataset.y.shape == (n_examples, 7)
assert ((dataset.y == 0) | (dataset.y == 1)).all()
_kwargs = kwargs.copy()
_kwargs.update(reductions=sum)
dataset = VisualArithmeticDataset(**_kwargs)
assert dataset.x.shape == (n_examples, 50, 50)
assert dataset.y.shape == (n_examples, 1)
assert set(dataset.y.flatten()).issubset(set(range(13)))
_kwargs = kwargs.copy()
_kwargs.update(reductions="A:sum")
dataset = VisualArithmeticDataset(**_kwargs)
assert dataset.x.shape == (n_examples, 50, 50)
assert dataset.y.shape == (n_examples, 1)
assert set(dataset.y.flatten()).issubset(set(range(13)))
_kwargs = kwargs.copy()
_kwargs.update(reductions="A:sum,M:prod")
dataset = VisualArithmeticDataset(**_kwargs)
assert dataset.x.shape == (n_examples, 50, 50)
assert dataset.y.shape == (n_examples, 1)
assert set(dataset.y.flatten()).issubset(set(range(126)))
assert not set(dataset.y.flatten()).issubset(set(range(20)))
_kwargs = kwargs.copy()
_kwargs.update(reductions="min")
dataset = VisualArithmeticDataset(**_kwargs)
assert dataset.x.shape == (n_examples, 50, 50)
assert dataset.y.shape == (n_examples, 1)
assert set(dataset.y.flatten()).issubset(set(range(10)))
def __init__(self, shuffle=True, **kwargs):
start = time.time()
print("Trying to find dataset in cache...")
directory = kwargs.get(
"data_dir",
os.path.join(cfg.data_dir, "cached_datasets",
self.__class__.__name__))
os.makedirs(directory, exist_ok=True)
params = self.param_values()
param_hash = get_param_hash(params)
print(self.__class__.__name__)
print("Params:")
pprint.pprint(params)
print("Param hash: {}".format(param_hash))
self.filename = os.path.join(directory, str(param_hash))
cfg_filename = self.filename + ".cfg"
no_cache = os.getenv("DPS_NO_CACHE")
if no_cache:
print(
"Skipping dataset cache as DPS_NO_CACHE is set (value is {}).".
format(no_cache))
# We require cfg_filename to exist as it marks that dataset creation completed successfully.
if no_cache or not os.path.exists(
self.filename) or not os.path.exists(cfg_filename):
if kwargs.get("no_make", False):
raise Exception(
"`no_make` is True, but dataset was not found in cache.")
# Start fresh
try:
os.remove(self.filename)
except FileNotFoundError:
pass
try:
os.remove(cfg_filename)
except FileNotFoundError:
pass
print("File for dataset not found, creating...")
run_kwargs = kwargs.get('run_kwargs', None)
if run_kwargs is not None:
# Create the dataset in parallel and write it to the cache.
make_dataset_in_parallel(run_kwargs, self.__class__, params)
else:
self._writer = tf.python_io.TFRecordWriter(self.filename)
try:
with NumpySeed(self.seed):
self._make()
self._writer.close()
print("Done creating dataset.")
except BaseException:
self._writer.close()
try:
os.remove(self.filename)
except FileNotFoundError:
pass
try:
os.remove(cfg_filename)
except FileNotFoundError:
pass
raise
with open(cfg_filename, 'w') as f:
f.write(pprint.pformat(params))
else:
print("Found.")
print("Took {} seconds.".format(time.time() - start))
print("Features for dataset: ")
pprint.pprint(self.features)
print()
def run_stage(mpi_context, env, stage_idx, exp_dir):
config, seed = mpi_context.start_stage()
with ExitStack() as stack:
stack.enter_context(config)
stack.enter_context(NumpySeed(seed))
# Accept config for new stage
print("\n" + "-" * 10 + " Stage set-up " + "-" * 10)
print(cfg.to_string())
# Configure and create session and graph for stage.
session_config = tf.ConfigProto()
session_config.intra_op_parallelism_threads = cfg.get(
'intra_op_parallelism_threads', 0)
session_config.inter_op_parallelism_threads = cfg.get(
'inter_op_parallelism_threads', 0)
# if cfg.use_gpu:
# per_process_gpu_memory_fraction = getattr(cfg, 'per_process_gpu_memory_fraction', None)
# if per_process_gpu_memory_fraction:
# session_config.gpu_options.per_process_gpu_memory_fraction = \
# per_process_gpu_memory_fraction
# gpu_allow_growth = getattr(cfg, 'gpu_allow_growth', None)
# if gpu_allow_growth:
# session_config.gpu_options.allow_growth = gpu_allow_growth
# if cfg.use_gpu:
# print("Using GPU if available.")
# print("Using {}% of GPU memory.".format(
# 100 * session_config.gpu_options.per_process_gpu_memory_fraction))
# print("Allowing growth of GPU memory: {}".format(session_config.gpu_options.allow_growth))
graph = tf.Graph()
sess = tf.Session(graph=graph, config=session_config)
# This HAS to come after the creation of the session, otherwise
# it allocates all GPU memory if using the GPU.
print("\nAvailable devices:")
from tensorflow.python.client import device_lib
print(device_lib.list_local_devices())
# if not cfg.use_gpu:
# print("Not using GPU.")
# stack.enter_context(graph.device("/cpu:0"))
stack.enter_context(graph.device("/cpu:0"))
stack.enter_context(graph.as_default())
stack.enter_context(sess)
stack.enter_context(sess.as_default())
tf_seed = gen_seed()
print(
"Setting tensorflow seed to generated seed: {}\n".format(tf_seed))
tf.set_random_seed(tf_seed)
# Set limit on CPU RAM for the stage
cpu_ram_limit_mb = cfg.get("cpu_ram_limit_mb", None)
if cpu_ram_limit_mb is not None:
stack.enter_context(memory_limit(cfg.cpu_ram_limit_mb))
print("Building env...\n")
# Maybe build env
if stage_idx == 0 or not cfg.preserve_env:
if env is not None:
env.close()
env = cfg.build_env()
if hasattr(env, "print_memory_footprint"):
env.print_memory_footprint()
print("\nDone building env.\n")
print("Building updater...\n")
updater = cfg.get_updater(env, mpi_context=mpi_context)
updater.stage_idx = stage_idx
updater.exp_dir = exp_dir
updater.build_graph()
print("\nDone building updater.\n")
# walk_variable_scopes(max_depth=3)
tf.train.get_or_create_global_step()
sess.run(uninitialized_variables_initializer())
sess.run(tf.assert_variables_initialized())
updater.worker_code()
stage_idx += 1
return env
images,
backgrounds.shape,
[sprites, scales, offsets, backgrounds],
delta=0.002)
print("Jacobian error: {}".format(err))
threshold = 2e-4
assert err < threshold, "Jacobian error ({}) exceeded threshold ({})".format(
err, threshold)
if __name__ == "__main__":
from contextlib import ExitStack
with NumpySeed(100000):
sprites, scales, offsets, backgrounds = _get_data()
device = 'gpu'
print("Running...")
session_config = tf.ConfigProto()
session_config.log_device_placement = 1
session_config.gpu_options.per_process_gpu_memory_fraction = 0.1
session_config.gpu_options.allow_growth = True
graph = tf.Graph()
sess = tf.Session(graph=graph, config=session_config)
with ExitStack() as stack:
def build_search(path,
name,
distributions,
config,
n_repeats,
n_param_settings=None,
_zip=True,
add_date=0,
do_local_test=True,
readme=""):
""" Create a job implementing a hyper-parameter search.
Parameters
----------
path: str
Path to the directory where the search archive will be saved.
name: str
Name for the search.
distributions: dict (str -> (list or distribution))
Distributions to sample from. Can also be a list of samples.
config: Config instance
The base configuration.
n_repeats: int
Number of different random seeds to run each sample with.
n_param_settings: int
Number of parameter settings to sample. If not supplied, all
possibilities are generated.
_zip: bool
Whether to zip the created search directory.
add_date: bool
Whether to add time to name of experiment directory.
do_local_test: bool
If True, run a short test using one of the sampled
configs on the local machine to catch any dumb errors
before starting the real experiment.
readme: str
String specifiying context/purpose of search.
"""
if config.get('seed', None) is None:
config.seed = gen_seed()
with NumpySeed(config.seed):
es = ExperimentStore(path, prefix="build_search")
count = 0
base_name = name
has_built = False
while not has_built:
try:
exp_dir = es.new_experiment(name,
config.seed,
add_date=add_date,
force_fresh=1)
has_built = True
except FileExistsError:
name = "{}_{}".format(base_name, count)
count += 1
if readme:
with open(exp_dir.path_for('README.md'), 'w') as f:
f.write(readme)
print(config)
exp_dir.record_environment(config=config)
print("Building parameter search at {}.".format(exp_dir.path))
job = Job(exp_dir.path)
new_configs = sample_configs(distributions, n_repeats,
n_param_settings)
with open(exp_dir.path_for("sampled_configs.txt"), "w") as f:
f.write("\n".join("idx={}: {}".format(c["idx"], pformat(c))
for c in new_configs))
print("{} configs were sampled for parameter search.".format(
len(new_configs)))
if do_local_test:
print("\nStarting local test " + ("=" * 80))
test_config = new_configs[0].copy()
test_config.update(max_steps=1000, render_hook=None)
_RunTrainingLoop(config)(test_config)
print("Done local test " + ("=" * 80) + "\n")
job.map(_RunTrainingLoop(config.copy()), new_configs)
job.save_object('metadata', 'distributions', distributions)
job.save_object('metadata', 'config', config)
print(job.summary())
if _zip:
path = job.zip(delete=True)
else:
path = exp_dir.path
print("Zipped {} as {}.".format(exp_dir.path, path))
return path, len(new_configs)
def run(self, start_time):
""" Run the training loop.
Parameters
----------
start_time: int
Start time (in seconds since epoch) for measuring elapsed time for
purposes of interrupting the training loop.
"""
if start_time is None:
start_time = time.time()
self.start_time = start_time
self.timestamp("Entering TrainingLoop.run")
prepare_func = cfg.get("prepare_func", None)
if callable(prepare_func):
prepare_func() # Modify the config in arbitrary ways before training
else:
try:
prepare_funcs = list(prepare_func)
except (TypeError, ValueError):
pass
else:
for f in prepare_funcs:
if callable(f):
f()
self.curriculum = cfg.curriculum + []
if cfg.seed is None or cfg.seed < 0:
cfg.seed = gen_seed()
# Create a directory to store the results of the training session.
self.experiment_store = ExperimentStore(os.path.join(cfg.local_experiments_dir, cfg.env_name))
exp_dir = self.experiment_store.new_experiment(
self.exp_name, cfg.seed, add_date=1, force_fresh=1, update_latest=False)
self.exp_dir = exp_dir
cfg.path = exp_dir.path
breaker = "-" * 40
header = "{}\nREADME.md - {}\n{}\n\n\n".format(breaker, os.path.basename(exp_dir.path), breaker)
readme = header + (cfg.readme if cfg.readme else "") + "\n\n"
with open(exp_dir.path_for('README.md'), 'w') as f:
f.write(readme)
self.data = _TrainingLoopData(exp_dir)
self.data.setup()
frozen_data = None
with ExitStack() as stack:
if cfg.pdb:
stack.enter_context(pdb_postmortem())
print("`pdb` is turned on, so forcing setting robust=False")
cfg.robust = False
stack.enter_context(redirect_stream('stdout', self.data.path_for('stdout'), tee=cfg.tee))
stack.enter_context(redirect_stream('stderr', self.data.path_for('stderr'), tee=cfg.tee))
print("\n\n" + "=" * 80)
self.timestamp("Starting training run (name={})".format(self.exp_name))
print("\nDirectory for this training run is {}.".format(exp_dir.path))
stack.enter_context(NumpySeed(cfg.seed))
print("\nSet numpy random seed to {}.\n".format(cfg.seed))
limiter = time_limit(
self.time_remaining, verbose=True,
timeout_callback=lambda limiter: print("Training run exceeded its time limit."))
self.mpi_context = MPI_MasterContext(cfg.get('n_procs', 1), exp_dir)
try:
with limiter:
self._run()
finally:
self.data.summarize()
self.timestamp("Done training run (name={})".format(self.exp_name))
print("=" * 80)
print("\n\n")
frozen_data = self.data.freeze()
self.timestamp("Leaving TrainingLoop.run")
return frozen_data
def make_dataset_in_parallel(run_kwargs, dataset_cls, param_values=None):
""" Uses dps.hyper.parallel_session.ParallelSession to create a dataset in parallel. """
# Get run_kwargs from command line
sig = inspect.signature(ParallelSession.__init__)
default_run_kwargs = sig.bind_partial()
default_run_kwargs.apply_defaults()
cl_run_kwargs = clify.command_line(default_run_kwargs.arguments).parse()
run_kwargs.update(cl_run_kwargs)
param_values = param_values or dataset_cls._capture_param_values()
param_values = Config(param_values)
seed = param_values["seed"]
if seed is None or seed < 0:
seed = gen_seed()
n_examples = param_values["n_examples"]
n_examples_per_shard = run_kwargs["n_examples_per_shard"]
experiment_store = ExperimentStore(
cfg.parallel_experiments_build_dir, prefix="build_{}".format(dataset_cls.__name__))
count = 0
name = "attempt=0"
has_built = False
while not has_built:
try:
exp_dir = experiment_store.new_experiment(name, seed, add_date=True, force_fresh=True)
has_built = True
except FileExistsError:
count += 1
name = "attempt_{}".format(count)
print("Building dataset.")
job = Job(exp_dir.path)
n_examples_remaining = n_examples
with NumpySeed(seed):
inputs = []
idx = 0
while n_examples_remaining:
seed = gen_seed()
cur_n_examples = min(n_examples_remaining, n_examples_per_shard)
n_examples_remaining -= cur_n_examples
inputs.append((idx, seed, cur_n_examples))
idx += 1
job.map(_BuildDataset(dataset_cls, param_values), inputs)
job.save_object('metadata', 'param_values', param_values)
print(job.summary())
archive_path = job.zip(delete=True)
print("Zipped {} as {}.".format(exp_dir.path, archive_path))
run_kwargs = run_kwargs.copy()
del run_kwargs['n_examples_per_shard']
run_kwargs.update(
archive_path=archive_path, name=name, kind="parallel",
parallel_exe=cfg.parallel_exe)
parallel_session = submit_job(**run_kwargs)
with cd(os.path.join(parallel_session.job_path, 'experiments')):
dataset_files = []
for dir_path, dirs, files in os.walk('.'):
if not dir_path.startswith("./exp__seed="):
continue
df = [f for f in files if not f.endswith('.cfg')]
assert len(df) == 1
dataset_files.append(os.path.join(dir_path, df[0]))
cached_filename = os.path.join(cfg.data_dir, "cached_datasets", dataset_cls.__name__, str(get_param_hash(param_values)))
command = "cat " + " ".join(dataset_files) + " > " + cached_filename
print("Running command: \n" + command)
subprocess.run(command, shell=True, check=True)
print("Done.")
with open(cached_filename + ".cfg", 'w') as f:
f.write(pprint.pformat(param_values))
return parallel_session