def test_no_garbage(self):
device, data_format = resnet50_test_util.device_and_data_format()
model = resnet50.ResNet50(data_format)
optimizer = tf.compat.v1.train.GradientDescentOptimizer(0.1)
with tf.device(device):
images, labels = resnet50_test_util.random_batch(2, data_format)
gc.disable()
# Warm up. Note that this first run does create significant amounts of
# garbage to be collected. The hope is that this is a build-only effect,
# and a subsequent training loop will create nothing which needs to be
# collected.
apply_gradients(model, optimizer,
compute_gradients(model, images, labels))
gc.collect()
previous_gc_debug_flags = gc.get_debug()
gc.set_debug(gc.DEBUG_SAVEALL)
for _ in range(2):
# Run twice to ensure that garbage that is created on the first
# iteration is no longer accessible.
apply_gradients(model, optimizer,
compute_gradients(model, images, labels))
gc.collect()
# There should be no garbage requiring collection.
self.assertEqual(0, len(gc.garbage))
gc.set_debug(previous_gc_debug_flags)
gc.enable()
def benchmark_eager_train_async(self):
self._benchmark_eager_train(
'eager_train_async',
MockIterator,
resnet50_test_util.device_and_data_format(),
defun=False,
execution_mode=context.ASYNC)
def _hvp_benchmark(self,
hvp_fn,
label,
batch_sizes,
num_iters=30,
num_burn=5):
device, data_format = resnet50_test_util.device_and_data_format()
model = resnet50.ResNet50(data_format)
for batch_size in batch_sizes:
with tf.device(device):
images, labels = resnet50_test_util.random_batch(
batch_size, data_format)
images = tf.constant(images)
labels = tf.constant(labels)
model.build(images.shape)
vector = [tf.ones_like(v) for v in model.trainable_variables]
for _ in xrange(num_burn):
results = hvp_fn(model, images, labels, vector)
for result in results:
result.cpu()
self._force_device_sync()
gc.collect()
start = time.time()
for _ in xrange(num_iters):
results = hvp_fn(model, images, labels, vector)
for result in results:
result.cpu()
self._force_device_sync()
resnet50_test_util.report(self, label, start, num_iters,
device, batch_size, data_format)
def test_apply_retrieve_intermediates(self):
device, data_format = resnet50_test_util.device_and_data_format()
model = resnet50.ResNet50(data_format,
block3_strides=True,
include_top=False)
intermediates_dict = {}
with tf.device(device):
images, _ = resnet50_test_util.random_batch(2, data_format)
output = model(images,
training=False,
intermediates_dict=intermediates_dict)
output_shape = ((2, 2048, 1, 1) if data_format == 'channels_first' else
(2, 1, 1, 2048))
self.assertEqual(output_shape, output.shape)
if data_format == 'channels_first':
block_shapes = {
'block0': (2, 64, 112, 112),
'block0mp': (2, 64, 55, 55),
'block1': (2, 256, 55, 55),
'block2': (2, 512, 28, 28),
'block3': (2, 1024, 7, 7),
'block4': (2, 2048, 1, 1),
}
else:
block_shapes = {
'block0': (2, 112, 112, 64),
'block0mp': (2, 55, 55, 64),
'block1': (2, 55, 55, 256),
'block2': (2, 28, 28, 512),
'block3': (2, 7, 7, 1024),
'block4': (2, 1, 1, 2048),
}
for (block_name, block) in intermediates_dict.items():
self.assertEqual(block_shapes[block_name], block.shape)
def test_apply_with_pooling(self):
device, data_format = resnet50_test_util.device_and_data_format()
model = resnet50.ResNet50(data_format, include_top=False, pooling='avg')
with tf.device(device):
images, _ = resnet50_test_util.random_batch(2, data_format)
output = model(images, training=False)
self.assertEqual((2, 2048), output.shape)
def test_apply_no_top(self):
device, data_format = resnet50_test_util.device_and_data_format()
model = resnet50.ResNet50(data_format, include_top=False)
with tf.device(device):
images, _ = resnet50_test_util.random_batch(2, data_format)
output = model(images, training=False)
output_shape = ((2, 2048, 1, 1) if data_format == 'channels_first' else
(2, 1, 1, 2048))
self.assertEqual(output_shape, output.shape)
def _apply(self, defun=False, execution_mode=None):
device, data_format = resnet50_test_util.device_and_data_format()
model = resnet50.ResNet50(data_format)
if defun:
model.call = tf.function(model.call)
with tf.device(device), context.execution_mode(execution_mode):
images, _ = resnet50_test_util.random_batch(2, data_format)
output = model(images, training=False)
context.async_wait()
self.assertEqual((2, 1000), output.shape)
def benchmark_eager_train_datasets_with_defun(self):
def make_iterator(tensors):
with tf.device('/device:CPU:0'):
ds = tf.data.Dataset.from_tensors(tensors).repeat()
return iter(ds)
self._benchmark_eager_train(
'eager_train_dataset_with_defun', make_iterator,
resnet50_test_util.device_and_data_format(), defun=True)
def test_hvp_shapes(self, hvp_function):
device, data_format = resnet50_test_util.device_and_data_format()
model = resnet50.ResNet50(data_format)
with tf.device(device):
images, labels = resnet50_test_util.random_batch(2, data_format)
images = tf.constant(images)
labels = tf.constant(labels)
model.build(images.shape)
vector = [tf.ones_like(v) for v in model.trainable_variables]
# Note that numerical differences build up to quite large differences here
# in the final hvp. tensorflow/python/eager:forwardprop_test has a
# smaller-scale test that the computations are close on a much smaller but
# otherwise similar model.
hvp = hvp_function(model, images, labels, vector)
for hvp_component, variable in zip(hvp, model.trainable_variables):
self.assertEqual(hvp_component.shape, variable.shape)
self.assertEqual(hvp_component.dtype, variable.dtype)
def _test_train(self, execution_mode=None):
device, data_format = resnet50_test_util.device_and_data_format()
model = resnet50.ResNet50(data_format)
tf.compat.v2.summary.experimental.set_step(
tf.compat.v1.train.get_or_create_global_step())
logdir = tempfile.mkdtemp()
with tf.compat.v2.summary.create_file_writer(
logdir, max_queue=0,
name='t0').as_default(), tf.compat.v2.summary.record_if(True):
with tf.device(device), context.execution_mode(execution_mode):
optimizer = tf.compat.v1.train.GradientDescentOptimizer(0.1)
images, labels = resnet50_test_util.random_batch(2, data_format)
apply_gradients(model, optimizer,
compute_gradients(model, images, labels))
self.assertEqual(320, len(model.variables))
context.async_wait()
events = events_from_logdir(logdir)
self.assertEqual(len(events), 2)
self.assertEqual(events[1].summary.value[0].tag, 'loss')
def benchmark_eager_train_with_defun(self):
self._benchmark_eager_train(
'eager_train_with_defun',
MockIterator,
resnet50_test_util.device_and_data_format(),
defun=True)
def benchmark_eager_train_sync(self):
self._benchmark_eager_train(
'eager_train',
MockIterator,
resnet50_test_util.device_and_data_format(),
defun=False)
def benchmark_eager_apply_with_defun(self):
self._benchmark_eager_apply(
'eager_apply_with_defun',
resnet50_test_util.device_and_data_format(),
defun=True)
def benchmark_eager_apply_async(self):
self._benchmark_eager_apply(
'eager_apply_async',
resnet50_test_util.device_and_data_format(),
defun=False,
execution_mode=context.ASYNC)
def benchmark_eager_apply_sync(self):
self._benchmark_eager_apply(
'eager_apply',
resnet50_test_util.device_and_data_format(),
defun=False)
