def _CompareStackedElman(self, seqlen, batch, dims, layers):
"""Tests that StackedRecurrent computest the same output as Recurrent()."""
trailing_pad_len = 2
g = tf.Graph()
with g.as_default():
ref, output, _, _, _ = self._BuildStackedRecurrentElman(
seqlen, trailing_pad_len, batch, dims, layers)
ref = ref[:-trailing_pad_len]
output = output[:-trailing_pad_len]
with self.session(graph=g):
ref_val, out_val = self.evaluate([ref, output])
self._LogDiff(ref_val, out_val)
self.assertAllClose(ref_val, out_val)
def testEmptySequentialLayerFPropMeta(self):
g = tf.Graph()
with g.as_default():
p = layers.SequentialLayer.Params().Set(name='seq')
l = p.Instantiate()
x = py_utils.NestedMap(val=tf.random.normal(shape=[2, 32]))
y = l.FPropDefaultTheta(x)
self.assertIsInstance(y.val, tf.Tensor)
y_shape = l.FPropMeta(
p, py_utils.Transform(lambda t: tshape.Shape(t.shape),
x)).out_shapes[0]
self.assertEqual(y.val.shape.as_list(),
y_shape.val.ToTensorShape().as_list())
def _TestFProp(self, p, in_shape, expected_out_shape):
g = tf.Graph()
with g.as_default():
l = p.Instantiate()
x = tf.random.normal(shape=in_shape)
y = l.FPropDefaultTheta(x)
if isinstance(y, (list, tuple)):
self.assertEqual(len(y), 1)
y = y[0]
with self.session(graph=g) as sess:
sess.run(tf.global_variables_initializer())
val = sess.run(y)
self.assertEqual(val.shape, expected_out_shape)
def testDecoderWithOrientedPerClassNMS(self):
batch_size = 4
num_preds = 8
num_classes = 10
# An example of setting the score threshold high and IOU threshold low
# for classes we don't care about
score_threshold = [1.0] * num_classes
score_threshold[1] = 0.05
nms_iou_threshold = [0.0] * num_classes
nms_iou_threshold[1] = 0.5
with tf.Graph().as_default():
tf.random.set_seed(12345)
predicted_bboxes = tf.random.normal([batch_size, num_preds, 7])
classification_scores = tf.random.uniform(
[batch_size, num_preds, num_classes], minval=0, maxval=1)
bboxes, bbox_scores, valid_mask = detection_decoder.DecodeWithNMS(
predicted_bboxes,
classification_scores,
nms_iou_threshold=nms_iou_threshold,
score_threshold=score_threshold,
use_oriented_per_class_nms=True)
with self.session() as sess:
outputs = sess.run([
predicted_bboxes, classification_scores, bboxes, bbox_scores,
valid_mask
])
(input_bboxes, input_scores, output_bboxes, output_scores,
mask) = outputs
self.assertEqual((batch_size, num_preds, 7), input_bboxes.shape)
self.assertEqual((batch_size, num_classes, num_preds, 7),
output_bboxes.shape)
self.assertEqual((batch_size, num_preds, num_classes),
input_scores.shape)
self.assertEqual((batch_size, num_classes, num_preds),
output_scores.shape)
self.assertEqual((batch_size, num_classes, num_preds), mask.shape)
# Assert that NMS did some kind of filtering for each class
for cls_idx in range(num_classes):
self.assertEqual(
mask[:, cls_idx, :].sum(),
(input_scores[:, :, cls_idx] > score_threshold[cls_idx]).sum())
self.assertEqual(
mask[:, cls_idx, :].sum(),
(output_scores[:, cls_idx, :] > score_threshold[cls_idx]).sum())
def testUniTransformerParallelFPropEntmax(self):
length_dim = 4
graph = tf.Graph()
params = gshard_builder.UniTransformer.Params().Set(
gated_gelu=False,
gated_ffn_activation=tf.nn.relu,
positional_embedding=False,
dtype=tf.float32,
name='transformer',
parallel_ffn=True,
hidden_dim_reshape_segments=2,
conv_kernel_size=2,
builder=gshard_builder.RecurrentDenseBuilderParallelDecode.Params(
).Set(
device_mesh_shape=[1, 1],
device_mesh=None,
relative_attention_num_buckets=32,
relative_attention_type='bias',
relative_attention_max_distance=128,
dtype=tf.float32,
num_devices=1, # we call .Split num_devices on axis 0 (batch)
relative_attention_use_universal_1d_position=True,
model_dim=32,
model_dim_reshape_segments=2,
attention_num_memory_heads=1,
proj_weight_hdim=2,
attention_num_heads=8,
ff_dim=128,
attention_key_value_dim=8,
attention_combine_dims=True),
batch_size=32,
sequence_length=length_dim,
num_transformer_layers=2,
aux_loss_coef=0.0,
loss_denominator=None,
label_smoothing=0,
vocab_size=128,
max_length=length_dim,
use_entmax=True)
with graph.as_default():
py_utils.GetOrCreateGlobalStepVar()
params.params_init = py_utils.WeightInit.Xavier(scale=1.0, seed=0)
tf.random.set_seed(24332)
model = params.Instantiate()
with tf.Session(graph=graph) as sess:
input_batch = self._PreLoadInput()
loss = model.FPropDefaultTheta(input_batch)[0]['loss'][0]
sess.run(tf.global_variables_initializer())
loss_eval = sess.run(loss)
test_utils.CompareToGoldenSingleFloat(self, 5.146667, loss_eval)
def _ComputeFinalMetrics(self,
classids=None,
difficulty=None,
distance=None,
num_points=None,
rotation=None):
"""Compute precision-recall curves as well as average precision.
Args:
classids: A list of N int32.
difficulty: Not used.
distance: int32 specifying a binned Euclidean distance of the ground truth
bounding box. If None is specified, all distances are selected.
num_points: int32 specifying a binned number of laser points within the
ground truth bounding box. If None is specified, all boxes are selected.
rotation: int32 specifying a binned rotation within the ground truth
bounding box. If None is specified, all boxes are selected.
Returns:
dict. Each entry in the dict is a list of C (number of classes) dicts
containing mapping from metric names to individual results. Individual
entries may be the following items.
- scalars: A list of C (number of classes) dicts mapping metric
names to scalar values.
- curves: A list of C dicts mapping metrics names to np.float32
arrays of shape [NumberOfPrecisionRecallPoints()+1, 2]. In the last
dimension, 0 indexes precision and 1 indexes recall.
"""
del difficulty
tf.logging.info('Computing final Waymo metrics.')
assert classids is not None, 'classids must be supplied.'
feed_dict = {}
g = tf.Graph()
scalar_fetches = []
curve_fetches = []
with g.as_default():
for classid in classids:
data = self._GetData(
classid,
distance=distance,
num_points=num_points,
rotation=rotation)
metrics = self._BuildMetric(data, classid)
scalar_fetches += [metrics.scalar_metrics]
curve_fetches += [metrics.curve_metrics]
feed_dict.update(metrics.feed_dict)
with tf.Session(graph=g) as sess:
results = sess.run([scalar_fetches, curve_fetches], feed_dict=feed_dict)
tf.logging.info('Finished computing final Waymo metrics.')
return {'scalars': results[0], 'curves': results[1]}
def _ComputeFinalMetrics(self,
classids=None,
difficulty=None,
distance=None,
num_points=None,
rotation=None):
"""Compute precision-recall curves as well as average precision.
Args:
classids: A list of N int32.
difficulty: String in [easy, moderate, hard]. If None specified, all
difficulty levels are permitted.
distance: int32 specifying a binned Euclidean distance of the ground truth
bounding box. If None is specified, all distances are selected.
num_points: int32 specifying a binned number of laser points within the
ground truth bounding box. If None is specified, all boxes are selected.
rotation: int32 specifying a binned rotation within the ground truth
bounding box. If None is specified, all boxes are selected.
Returns:
(dict, dict):
- scalar_metrics: A list of C (number of clases) dicts mapping metric
names to scalar values.
- curve_metrics: A list of C dicts mapping metrics names to np.float32
arrays of shape [NumberOfPrecisionRecallPoints()+1, 2]. In the last
dimension, 0 indexes precision and 1 indexes recall.
"""
assert classids is not None, 'classids must be supplied.'
feed_dict = {}
g = tf.Graph()
scalar_fetches = []
curve_fetches = []
with g.as_default():
for classid in classids:
data = self._GetData(classid,
difficulty=difficulty,
distance=distance,
num_points=num_points,
rotation=rotation)
scalars, curves, class_feed_dict = self._BuildMetric(
data, classid)
scalar_fetches += [scalars]
curve_fetches += [curves]
feed_dict.update(class_feed_dict)
with tf.Session(graph=g) as sess:
results = sess.run([scalar_fetches, curve_fetches],
feed_dict=feed_dict)
return results[0], results[1]
def testSoftCondLayer(self):
num_experts = 100
with self.session(use_gpu=False, graph=tf.Graph()) as sess:
tf.random.set_seed(24332)
p = layers.SoftCondLayer.Params().Set(
name='soft_cond',
cond_dim=2,
num_experts=num_experts,
body=lingvo_layers.FCLayer.Params().Set(input_dim=2,
output_dim=2))
l = p.Instantiate()
x = tf.random.normal(shape=[1, 2, 2])
y = l.FPropDefaultTheta(x)
tf.global_variables_initializer().run()
x_val, y_val, vars_val = sess.run([x, y, l.vars])
p_nz = layers.SoftCondLayer.Params().Set(
name='soft_cond_nonzeros',
cond_dim=2,
num_experts=num_experts,
nonzeros_mean=True,
body=lingvo_layers.FCLayer.Params().Set(input_dim=2,
output_dim=2))
l_nz = p_nz.Instantiate()
x_nz = tf.random.normal(shape=[1, 2, 2])
y_nz = l_nz.FPropDefaultTheta(x_nz)
tf.global_variables_initializer().run()
x_nz_val, y_nz_val, vars_nz_val = sess.run([x_nz, y_nz, l_nz.vars])
np_val = x_val[0]
np_nz_val = x_nz_val[0]
taks_weight = np.exp(-1.0 * np.dot(np.mean(np_val, 0), vars_val.w))
taks_weight = 1.0 / (1.0 + taks_weight)
nzs = np.count_nonzero(np_nz_val, 0).astype('float32') + 1e-10
taks_weight_nz = np.exp(
-1.0 * np.dot(np.sum(np_nz_val, 0) / nzs, vars_nz_val.w))
taks_weight_nz = 1.0 / (1.0 + taks_weight_nz)
weighted_weight = np.einsum('i,ijk->jk', taks_weight, vars_val.body.w)
weighted_weight_nz = np.einsum('i,ijk->jk', taks_weight_nz,
vars_nz_val.body.w)
weighted_bias = np.einsum('i,ij->j', taks_weight, vars_val.body.b)
weighted_bias_nz = np.einsum('i,ij->j', taks_weight_nz,
vars_nz_val.body.b)
np_val_out = np.maximum(
0,
np.dot(np_val, weighted_weight) + weighted_bias)
np_val_out_nz = np.maximum(
0,
np.dot(np_nz_val, weighted_weight_nz) + weighted_bias_nz)
self.assertAllClose(np_val_out, y_val[0])
self.assertAllClose(np_val_out_nz, y_nz_val[0])
def Run(num_splits):
p = self._testParams()
with self.session(use_gpu=False, graph=tf.Graph()) as sess:
tf.set_random_seed(93820981)
p.input.cur_iter_in_seed = False
p.input.bucket_batch_limit = [
b * 2 / num_splits for b in p.input.bucket_batch_limit
]
with cluster_factory.ForTestingWorker(gpus=num_splits,
do_eval=True):
mdl = p.Instantiate()
metrics = mdl.FPropDefaultTheta()[0]
tf.global_variables_initializer().run()
return sess.run(metrics['loss'])
def testSpectrumAugmenterWithPerDomainPolicyFreqMask(self):
with self.session(use_gpu=False, graph=tf.Graph()):
tf.random.set_seed(1234)
inputs = tf.ones([6, 5, 4, 2], dtype=tf.float32)
input_domain_ids = tf.constant(
[[1] * 5, [2] * 5, [0] * 5, [2] * 5, [0] * 5, [1] * 5],
dtype=tf.float32)
paddings = tf.zeros([3, 5])
p = spectrum_augmenter.SpectrumAugmenter.Params()
p.name = 'specAug_layers'
p.domain_ids = [0, 1, 2]
p.freq_mask_max_bins = [0, 3, 8]
p.time_mask_max_frames = 0
p.random_seed = 1234
specaug_layer = p.Instantiate()
expected_output = np.array([[[[0., 0.], [0., 0.], [1., 1.], [1., 1.]],
[[0., 0.], [0., 0.], [1., 1.], [1., 1.]],
[[0., 0.], [0., 0.], [1., 1.], [1., 1.]],
[[0., 0.], [0., 0.], [1., 1.], [1., 1.]],
[[0., 0.], [0., 0.], [1., 1.], [1., 1.]]],
[[[1., 1.], [0., 0.], [0., 0.], [0., 0.]],
[[1., 1.], [0., 0.], [0., 0.], [0., 0.]],
[[1., 1.], [0., 0.], [0., 0.], [0., 0.]],
[[1., 1.], [0., 0.], [0., 0.], [0., 0.]],
[[1., 1.], [0., 0.], [0., 0.], [0., 0.]]],
[[[1., 1.], [1., 1.], [1., 1.], [1., 1.]],
[[1., 1.], [1., 1.], [1., 1.], [1., 1.]],
[[1., 1.], [1., 1.], [1., 1.], [1., 1.]],
[[1., 1.], [1., 1.], [1., 1.], [1., 1.]],
[[1., 1.], [1., 1.], [1., 1.], [1., 1.]]],
[[[0., 0.], [0., 0.], [0., 0.], [0., 0.]],
[[0., 0.], [0., 0.], [0., 0.], [0., 0.]],
[[0., 0.], [0., 0.], [0., 0.], [0., 0.]],
[[0., 0.], [0., 0.], [0., 0.], [0., 0.]],
[[0., 0.], [0., 0.], [0., 0.], [0., 0.]]],
[[[1., 1.], [1., 1.], [1., 1.], [1., 1.]],
[[1., 1.], [1., 1.], [1., 1.], [1., 1.]],
[[1., 1.], [1., 1.], [1., 1.], [1., 1.]],
[[1., 1.], [1., 1.], [1., 1.], [1., 1.]],
[[1., 1.], [1., 1.], [1., 1.], [1., 1.]]],
[[[1., 1.], [0., 0.], [0., 0.], [1., 1.]],
[[1., 1.], [0., 0.], [0., 0.], [1., 1.]],
[[1., 1.], [0., 0.], [0., 0.], [1., 1.]],
[[1., 1.], [0., 0.], [0., 0.], [1., 1.]],
[[1., 1.], [0., 0.], [0., 0.], [1., 1.]]]])
h, _ = specaug_layer.FPropDefaultTheta(
inputs, paddings, domain_ids=input_domain_ids)
actual_layer_output = self.evaluate(h)
print(np.array_repr(actual_layer_output))
self.assertAllClose(actual_layer_output, expected_output)
def _testUniTransformerFProp(self, use_moe=False):
length_dim = 4
graph = tf.Graph()
params = gshard_builder.UniTransformer.Params().Set(
gated_gelu=False,
moe=use_moe,
moe_gated_gelu=use_moe,
positional_embedding=False,
dtype=tf.float32,
name='transformer',
builder=gshard_builder.DenseBuilder.Params().Set(
device_mesh_shape=[1, 1],
device_mesh=None,
relative_attention_num_buckets=32,
relative_attention_type='bias',
relative_attention_max_distance=128,
dtype=tf.float32,
num_devices=1, # we call .Split num_devices on axis 0 (batch)
relative_attention_use_universal_1d_position=True,
e_dim=2 if use_moe else None,
num_groups=1 if use_moe else None,
c_dim=2 if use_moe else None,
model_dim=32,
attention_num_heads=8,
moe_hidden_dim=128,
ff_dim=128,
attention_key_value_dim=8,
attention_combine_dims=True),
batch_size=32,
sequence_length=length_dim,
num_transformer_layers=2,
aux_loss_coef=0.0,
loss_denominator=None,
label_smoothing=0,
vocab_size=128,
max_length=length_dim)
with graph.as_default():
py_utils.GetOrCreateGlobalStepVar()
params.params_init = py_utils.WeightInit.Xavier(scale=1.0, seed=0)
tf.random.set_seed(24332)
model = params.Instantiate()
with tf.Session(graph=graph) as sess:
input_batch = self._PreLoadInput()
loss = model.FPropDefaultTheta(input_batch)[0]['loss'][0]
sess.run(tf.global_variables_initializer())
loss_eval = sess.run(loss)
golden_float = 5.761248 if use_moe else 5.635831
test_utils.CompareToGoldenSingleFloat(self, golden_float,
loss_eval)
def testParallelMatmulLayer(self):
g = tf.Graph()
with g.as_default():
tf.set_random_seed(24332)
def MergeFn(xs):
result = []
for x in zip(*xs):
val = x[0]
for v in x[1:]:
val = tf.matmul(val, v)
result.append(val)
return tuple(result)
p = layers.ParallelLayer.Params().Set(
name='parallel',
merge=MergeFn,
sub=[
lingvo_layers.FCLayer.Params().Set(name='foo',
input_dim=32,
output_dim=4),
lingvo_layers.FCLayer.Params().Set(name='bar',
input_dim=32,
output_dim=4),
lingvo_layers.FCLayer.Params().Set(name='baz',
input_dim=32,
output_dim=4)
])
l = p.Instantiate()
x = tf.random_normal(shape=[2, 4, 32])
y = l.FPropDefaultTheta(x)
with self.session(graph=g) as sess:
sess.run(tf.global_variables_initializer())
x_val, y_val, w = sess.run([x, y, l.vars])
out = []
act = x_val
# relu(act \dot w + b)
out += [np.maximum(0, np.matmul(act, w.foo.w) + w.foo.b)]
self.assertEqual(out[-1].shape, (2, 4, 4))
out += [np.maximum(0, np.matmul(act, w.bar.w) + w.bar.b)]
self.assertEqual(out[-1].shape, (2, 4, 4))
out += [np.maximum(0, np.matmul(act, w.baz.w) + w.baz.b)]
self.assertEqual(out[-1].shape, (2, 4, 4))
np_result = out[0]
for v in out[1:]:
np_result = np.matmul(np_result, v)
self.assertAllClose(np_result, y_val, atol=1e-5, rtol=1e-5)
def testEmptySequentialLayer(self):
g = tf.Graph()
with g.as_default():
tf.set_random_seed(24332)
p = layers.SequentialLayer.Params().Set(name='seq')
l = p.Instantiate()
x = tf.random_normal(shape=[2, 32])
y = l.FPropDefaultTheta(x)
self.assertIsInstance(y, tf.Tensor)
with self.session(graph=g) as sess:
sess.run(tf.global_variables_initializer())
x_val, y_val = sess.run([x, y])
self.assertAllEqual(x_val, y_val)
def FakeMnistData(tmpdir, train_size=60000, test_size=10000):
"""Fake Mnist data for unit tests."""
data_path = os.path.join(tmpdir, 'ckpt')
with tf.Graph().as_default():
with tf.Session() as sess:
x_train = tf.ones((train_size, 28, 28, 1), dtype=tf.uint8)
y_train = tf.ones((train_size), dtype=tf.uint8)
x_test = tf.ones((test_size, 28, 28, 1), dtype=tf.uint8)
y_test = tf.ones((test_size), dtype=tf.uint8)
sess.run(
io_ops.save_v2(data_path,
['x_train', 'y_train', 'x_test', 'y_test'],
[''] * 4, [x_train, y_train, x_test, y_test]))
return data_path
def testBasicGrad(self):
time, batch, dims, hidden_dim, vocab = 5, 3, 6, 4, 8
p = lm_layers.TransformerLm.Params()
p.dtype = tf.float64
p.name = 'transformerlm'
p.vocab_size = vocab
p.emb.vocab_size = vocab
p.emb.embedding_dim = dims
p.model_dim = dims
p.num_trans_layers = 1
p.trans_tpl.source_dim = dims
p.trans_tpl.tr_atten_tpl.num_attention_heads = 2
p.trans_tpl.tr_fflayer_tpl.hidden_dim = hidden_dim
p.softmax.input_dim = dims
p.softmax.num_classes = vocab
with self.session(use_gpu=False, graph=tf.Graph()) as sess:
lm = p.Instantiate()
np.random.seed(12345)
inputs = np.random.randint(vocab, size=[time, batch])
targets = np.zeros([time, batch])
targets[:-1] = inputs[1:]
inputs = tf.constant(inputs, tf.int32)
paddings = np.zeros([time, batch])
paddings[-1] = 1.0
paddings = tf.constant(paddings, tf.float64)
targets = tf.constant(targets, tf.int32)
xent_output, _ = lm.FPropDefaultTheta(
inputs=inputs,
paddings=paddings,
labels=py_utils.NestedMap(class_weights=1 - paddings,
class_ids=targets))
lm_vars = lm.vars.Flatten()
grads = tf.gradients(xent_output.avg_xent, lm_vars)
for i, x in enumerate(grads):
if isinstance(x, tf.IndexedSlices):
grads[i] = tf.math.unsorted_segment_sum(
x.values, x.indices, x.dense_shape[0])
tf.global_variables_initializer().run()
self.assertEqual(len(lm_vars), len(grads))
for x, grad_x in zip(lm_vars, grads):
grad_symbolic = sess.run(grad_x)
grad_numeric = test_utils.ComputeNumericGradient(
sess, xent_output.avg_xent, x, delta=1e-6)
self.assertAllClose(grad_symbolic, grad_numeric, atol=0.005)
def testMix(self):
# Generate couple files.
def generate_test_data(tag, cnt):
tmp = os.path.join(tf.test.get_temp_dir(), tag)
with tf.python_io.TFRecordWriter(tmp) as w:
for i in range(cnt):
w.write(('%s:%08d' % (tag, i)).encode('utf-8'))
return tmp
path1 = generate_test_data('input1', 100)
path2 = generate_test_data('input2', 200)
path3 = generate_test_data('input3', 10)
g = tf.Graph()
with g.as_default():
# A record processor written in TF graph.
def _process(record):
return [record, record], 1
# Samples random records from the data files and processes them
# to generate batches.
(strs, vals), buckets = generic_input.GenericInput(
file_pattern=','.join(
['tfrecord:' + path1, 'tfrecord:' + path2, 'tfrecord:' + path3]),
input_source_weights=[0.2, 0.3, 0.5],
file_random_seed=0,
file_buffer_size=32,
file_parallelism=4,
bucket_batch_limit=[8],
bucket_upper_bound=[1],
processor=_process)
with self.session(graph=g) as sess:
tags_count = collections.defaultdict(int)
total_count = 10000
for _ in range(total_count):
ans_strs, ans_vals, ans_buckets = sess.run([strs, vals, buckets])
for s in ans_strs:
tags_count[s.split(b':')[0]] += 1
self.assertEqual(ans_strs.shape, (8,))
self.assertEqual(ans_vals.shape, (8,))
self.assertAllEqual(ans_buckets, [1] * 8)
self.assertEqual(sum(tags_count.values()), total_count * 8)
mix_ratios = {}
for k, v in six.iteritems(tags_count):
mix_ratios[k] = float(v) / total_count / 8
self.assertAlmostEqual(mix_ratios[b'input1'], 0.2, delta=0.01)
self.assertAlmostEqual(mix_ratios[b'input2'], 0.3, delta=0.01)
self.assertAlmostEqual(mix_ratios[b'input3'], 0.5, delta=0.01)
def testBiasLayer(self):
g = tf.Graph()
with g.as_default():
tf.set_random_seed(24332)
p = layers.BiasLayer.Params().Set(name='test', dims=10)
l = p.Instantiate()
x = tf.random_normal(shape=[2, 10])
y = l.FPropDefaultTheta(x)
with self.session(graph=g) as sess:
sess.run(tf.global_variables_initializer())
x_val, y_val, w_val = sess.run([x, y, l.vars])
self.assertEqual(w_val.b.shape, (10, ))
self.assertAllClose(x_val + w_val.b, y_val)
def _WaitTillInit(job=None):
"""Wait until the model is ready."""
try:
if py_utils.IsEagerMode():
topology = tf.tpu.experimental.initialize_tpu_system(
resolver)
else:
# tpu.initialize_system() is called with None as embedding_config, as
# embedding_config is not available yet. Later in _Loop, it is called
# with the correct embedding_config. Since it cannot be called twice
# in the same graph with different embedding_config, we use a
# dummy_graph here.
dummy_graph = tf.Graph()
with dummy_graph.as_default():
tpu_initialize_system_op = tf.tpu.initialize_system(
embedding_config=None, job=job)
with self._GetSession(graph=dummy_graph) as sess:
topology = sess.run(tpu_initialize_system_op)
if train_cfg.train.tpu_computation_shape is None:
computation_shape = py_utils.ComputationShape(
num_devices_per_split, topology)
else:
computation_shape = train_cfg.train.tpu_computation_shape
assert num_devices_per_split == np.prod(computation_shape)
if train_cfg.train.tpu_device_order_mode is None:
self.device_assignment = device_assignment_lib.device_assignment(
topology,
computation_shape=computation_shape,
num_replicas=data_parallelism)
else:
self.device_assignment = device_assignment_lib.device_assignment(
topology,
computation_shape=computation_shape,
num_replicas=data_parallelism,
device_order_mode=train_cfg.train.tpu_device_order_mode
)
py_utils.SetTpuDeviceAssignment(self.device_assignment, job)
tf.logging.info('device_assignment.core_assignment: %s',
str(self.device_assignment.core_assignment))
tf.logging.info(
'device_assignment.topology.device_coordinates: %s',
str(self.device_assignment.topology.device_coordinates))
except py_utils.transient_tf_errors as e:
tf.logging.info('TPU initialization failed: %s', e)
raise
def _testOneModelParams(self, registry, name):
with tf.Graph().as_default():
model_params = registry.GetClass(name)()
try:
all_datasets = model_params.GetAllDatasetParams()
except datasets.GetAllDatasetParamsNotImplementedError:
all_datasets = {}
for dataset_name in datasets.GetDatasets(model_params):
try:
all_datasets[dataset_name] = getattr(
model_params, dataset_name)()
except NotImplementedError:
pass
p = model_params.Model()
p.input = all_datasets['Train']
self.assertTrue(issubclass(p.cls, base_model.BaseModel))
self.assertIsNot(p.model, None)
p.cluster.mode = 'sync'
p.cluster.job = 'decoder'
p.cluster.decoder.replicas = 1
with p.cluster.Instantiate():
# Instantiate the params class, to help catch errors in layer
# constructors due to misconfigurations.
mdl = p.Instantiate()
self._ValidateEMA(name, mdl)
p = mdl.params
for dataset, input_p in all_datasets.items():
if issubclass(p.cls, base_model.SingleTaskModel):
if (not isinstance(input_p, hyperparams.InstantiableParams)
or not issubclass(
input_p.cls,
base_input_generator.BaseInputGenerator)):
# Assume this function is not a dataset function but some helper.
continue
if (dataset != 'Train' and issubclass(
input_p.cls,
base_input_generator.BaseSequenceInputGenerator)
and input_p.num_samples != 0):
self.assertEqual(
input_p.num_batcher_threads, 1,
f'num_batcher_threads too large in {dataset}. Decoder or eval '
f'runs over this set might not span exactly one epoch.'
)
else:
self.assertTrue(
issubclass(p.cls, base_model.MultiTaskModel))
def _load_graph_from_inference_graph(self, inference_graph):
"""Returns a tf.Graph() constructed from `inference_graph`.
Args:
inference_graph: An InferenceGraph proto from which a graph_def is loaded
from.
Returns:
A loaded tf.Graph().
"""
graph = tf.Graph()
with graph.as_default():
with tf.device("/%s:0" % "cpu" if self._device_type ==
"tpu" else self._device_type):
tf.import_graph_def(inference_graph.graph_def, name="")
return graph
def testSaveOnly(self):
train_dir = os.path.join(self.get_temp_dir(), 'testSaveOnly')
os.mkdir(train_dir)
p = base_model.SingleTaskModel.Params(LinearModel.Params())
p.input = base_input_generator.BaseInputGenerator.Params()
with self.session(graph=tf.Graph()) as sess:
model = p.Instantiate()
self.evaluate(tf.global_variables_initializer())
saver = checkpointer.Checkpointer(train_dir, model, save_only=True)
saver.Save(sess, model.global_step)
with self.assertRaises(AssertionError):
saver.RestoreIfNeeded(sess)
self.assertTrue(
os.path.isfile(os.path.join(train_dir, 'ckpt-00000000.index')))
def testMapLayer(self):
g = tf.Graph()
with g.as_default():
tf.random.set_seed(24332)
p = layers.MapLayer.Params().Set(
name='map', fn=tf.reduce_max, kwargs={'axis': 1})
l = p.Instantiate()
x0, x1 = [tf.random.normal(shape=[2, 3, 5])] * 2
y0, y1 = l.FPropDefaultTheta(x0, x1)
with self.session(graph=g):
self.evaluate(tf.global_variables_initializer())
vx0, vx1, vy0, vy1 = self.evaluate([x0, x1, y0, y1])
self.assertAllClose(np.max(vx0, 1), vy0)
self.assertAllClose(np.max(vx1, 1), vy1)
def testParallelLayer(self):
g = tf.Graph()
with g.as_default():
tf.set_random_seed(24332)
p = layers.ParallelLayer.Params().Set(
name='test',
merge=lambda xs: tuple([tf.add_n(x) for x in zip(*xs)]),
sub=[
lingvo_layers.FCLayer.Params().Set(name='foo',
input_dim=32,
output_dim=4),
lingvo_layers.FCLayer.Params().Set(name='bar',
input_dim=32,
output_dim=4),
layers.SequentialLayer.Params().Set(
name='seq',
sub=[
lingvo_layers.FCLayer.Params().Set(name='baz',
input_dim=32,
output_dim=4),
lingvo_layers.DropoutLayer.Params().Set(
name='dropout', keep_prob=0.5)
])
])
p.is_eval = True
l = p.Instantiate()
x = tf.random_normal(shape=[2, 32])
y = l.FPropDefaultTheta(x)
with self.session(graph=g) as sess:
sess.run(tf.global_variables_initializer())
x_val, y_val, w = sess.run([x, y, l.vars])
out = []
act = x_val
# relu(act \dot w + b)
out += [np.maximum(0, np.matmul(act, w.foo.w) + w.foo.b)]
self.assertEqual(out[-1].shape, (2, 4))
out += [np.maximum(0, np.matmul(act, w.bar.w) + w.bar.b)]
self.assertEqual(out[-1].shape, (2, 4))
out += [np.maximum(0, np.matmul(act, w.seq.baz.w) + w.seq.baz.b)]
self.assertEqual(out[-1].shape, (2, 4))
np_result = out[0]
for v in out[1:]:
np_result = np.add(np_result, v)
self.assertAllClose(np_result, y_val)
def _testOneModelParams(self, registry, name):
with tf.Graph().as_default():
p = registry.GetParams(name, 'Train')
self.assertTrue(issubclass(p.cls, base_model.BaseModel))
self.assertIsNot(p.model, None)
p.cluster.mode = 'sync'
p.cluster.job = 'decoder'
p.cluster.decoder.replicas = 1
with p.cluster.Instantiate():
# Instantiate the params class, to help catch errors in layer
# constructors due to misconfigurations.
mdl = p.Instantiate()
self._ValidateEMA(name, mdl)
p = mdl.params
for dataset in ('Train', 'Dev', 'Test'):
try:
input_p = registry.GetParams(name, dataset).input
except base_model_params.DatasetError:
# Dataset not defined.
if dataset == 'Dev': # Dev can be optional.
pass
else:
raise
if issubclass(p.cls, base_model.SingleTaskModel):
self.assertTrue(
issubclass(input_p.cls,
base_input_generator.BaseInputGenerator),
'Error in %s' % dataset)
if (dataset != 'Train') and issubclass(
input_p.cls,
base_input_generator.BaseSequenceInputGenerator
) and (input_p.num_samples != 0):
self.assertEqual(
input_p.num_batcher_threads, 1,
'num_batcher_threads too large in %s. Decoder '
'or eval runs over this set might not span '
'exactly one epoch.' % dataset)
else:
self.assertTrue(
issubclass(p.cls, base_model.MultiTaskModel))
for _, v in input_p.IterParams():
self.assertTrue(
issubclass(
v.cls,
base_input_generator.BaseInputGenerator),
'Error in %s' % dataset)
def _verify_timestep_counts(self,
num_splits,
auto_partition=False,
micro_batch_size=None):
num_micro_batches = 8
batch_size = 16
with self.session(graph=tf.Graph()) as sess:
tf.random.set_seed(1245)
inputs = tf.random.uniform([batch_size, 8, 8, 1], seed=12345)
if auto_partition:
layers = [
_SimpyLayer.Params().Set(name='layer_{}'.format(i))
for i in range(16)
]
net = PipeliningLayer.Params().Set(
name='pipeline',
num_micro_batches=num_micro_batches,
cell_tpl=_Partition(layers, num_splits,
tshape.Shape([batch_size, 8, 8,
1]))).Instantiate()
else:
net = _BuildDummyPipelineCnn(
num_splits=num_splits,
micro_batch_size=micro_batch_size,
num_micro_batches=num_micro_batches)
endpoints = net.FPropDefaultTheta(inputs)
if isinstance(endpoints, (list, tuple)):
logits, aux_logits = endpoints
else:
logits = endpoints
aux_logits = None
loss = tf.reduce_mean(logits)
grads = tf.gradients(loss, tf.trainable_variables())
grad_norm = tf.sqrt(py_utils.SumSquared(grads))
ts = net.GetAccumulatorValues().Flatten()
sess.run(tf.global_variables_initializer())
grad_norm_val, ts_vals = sess.run([grad_norm, ts])
test_utils.CompareToGoldenSingleFloat(self, 0.268087,
grad_norm_val)
# Accumulator values should be equal to number of time steps in pipeline.
for ts_val in list(ts_vals):
expected_ts = num_micro_batches if num_splits > 1 else 1
self.assertEqual(ts_val, expected_ts)
if aux_logits is not None:
aux_logit_tensor = sess.run(aux_logits)
self.assertEqual(aux_logit_tensor.shape, (batch_size, 8, 8, 1))
def testEinsumReplacementBxycBzxBzyc(self):
with self.session(use_gpu=False, graph=tf.Graph()) as sess:
a = tf.random.uniform(shape=[20, 7, 4, 3],
minval=0,
maxval=1,
dtype=tf.float32)
b = tf.random.uniform(shape=[20, 5, 7],
minval=0,
maxval=1,
dtype=tf.float32)
einsum = tf.einsum('bxyc,bzx->bzyc', a, b)
p = spectrum_augmenter_on_device.SpectrumAugmenterOnDevice.Params()
p.name = 'specAug_layers'
specaug_layer = p.Instantiate()
replacement = specaug_layer.EinsumBxycBzxBzyc(a, b)
einsum, replacement = sess.run([einsum, replacement])
self.assertAllClose(einsum, replacement)
def testEinsumReplacementBBmBm(self):
with self.session(use_gpu=False, graph=tf.Graph()):
a = tf.random.uniform(shape=[20],
minval=0,
maxval=1,
dtype=tf.float32)
b = tf.random.uniform(shape=[20, 10],
minval=0,
maxval=1,
dtype=tf.float32)
einsum = tf.einsum('b,bm->bm', a, b)
p = spectrum_augmenter_on_device.SpectrumAugmenterOnDevice.Params()
p.name = 'specAug_layers'
specaug_layer = p.Instantiate()
replacement = specaug_layer.EinsumBBmBm(a, b)
einsum, replacement = self.evaluate([einsum, replacement])
self.assertAllClose(einsum, replacement)
def testMnistV2(self):
g = tf.Graph()
with g.as_default():
tf.random.set_seed(1618)
p = model_registry.GetParams('test.MnistV2', 'Test')
p.random_seed = 73234288
p.input.ckpt = self.data_path
p.task.params_init = py_utils.WeightInit.Uniform(0.1,
seed=73234288)
with cluster_factory.ForTestingWorker(mode='sync',
job='trainer_client'):
model = p.Instantiate()
model.ConstructFPropBPropGraph()
with self.session(graph=g):
self.evaluate(tf.global_variables_initializer())
CompareToGoldenSingleFloat(self, 2.303070, self._runOneStep(model))
CompareToGoldenSingleFloat(self, 2.297364, self._runOneStep(model))
def __init__(self,
tpu=None,
worker_job_name=None,
prefix_max_len=128,
is_cloud_tpu_node=False):
self._tpu = tpu
self._worker_job = worker_job_name
self._prefix_max_len = prefix_max_len
self._c = threading.Condition() # lock
# set in reset_session
self._sess = None
# set in configure_cluster_params
self.cluster_params = None
# set in init_graph
self.cluster = None
self.graph = tf.Graph()
self.task = None
self.compile_op = None
self.init_vars_op = None
self.infeed_op = None
self.infeed_args = None
self.outfeed_op = None
self.outfeed = None
self.decode_loop = None
self.saver = None
self.num_batches = None
self.session_timeout_in_ms = None
self._heartbeat = False
self._saver_reshape = True
# set in load_spm
self.spm = None
if worker_job_name is not None:
if worker_job_name.startswith('/job:'):
worker_job_name = worker_job_name.split(':')[1]
else:
self._worker_job = '/job:' + worker_job_name
if is_cloud_tpu_node:
cluster_resolver = tf.distribute.cluster_resolver.TPUClusterResolver(
self._tpu, job_name=worker_job_name)
self._cluster_def = cluster_resolver.cluster_spec().as_cluster_def(
)
self._tpu = cluster_resolver.master()
else:
self._cluster_def = None
def __init__(self,
inference_graph,
subgraph_name=None,
checkpoint=None,
device_type="gpu",
tf_master="",
session_config=None):
assert device_type in ["cpu", "gpu", "tpu"]
subgraph_name = subgraph_name or "default"
if isinstance(inference_graph, six.string_types):
tf.logging.info("Reading inference graph from %s.",
inference_graph)
inference_graph = LoadInferenceGraph(inference_graph)
self._inference_graph = inference_graph
self._checkpoint = checkpoint
self._device_type = device_type
self._tf_master = tf_master
self._session_config = session_config
self._graph = tf.Graph()
with self._graph.as_default():
tf.logging.info(
"Loading inference graph for prediction subgraph_name={}.".
format(subgraph_name))
self._saver = tf.train.Saver(saver_def=inference_graph.saver_def)
with tf.device("/%s:0" %
"cpu" if device_type == "tpu" else device_type):
tf.import_graph_def(inference_graph.graph_def, name="")
self._graph.finalize()
if inference_graph.subgraphs:
if subgraph_name not in inference_graph.subgraphs:
raise ValueError(
"Subgraph %s not defined. Valid subgraphs: %s" %
(subgraph_name, list(inference_graph.subgraphs.keys())))
subgraph = inference_graph.subgraphs[subgraph_name]
self._fetches = subgraph.fetches
self._feeds = subgraph.feeds
else:
self._fetches = inference_graph.fetches
self._feeds = inference_graph.feeds
# Lock for creating new sessions.
self._sess_lock = threading.Lock()
self._cur_sess_id = 0
self._CreateNewSession()
