def const_model_inference_fn(features):
"""Builds the model graph with weights marked as constant.
This improves TPU inference performance because it prevents the weights
being transferred to the TPU every call to Session.run().
Returns:
(policy_output, value_output, logits) tuple of tensors.
"""
def custom_getter(getter, name, *args, **kwargs):
with tf.control_dependencies(None):
return tf.guarantee_const(
getter(name, *args, **kwargs), name=name+"/GuaranteeConst")
with tf.variable_scope("", custom_getter=custom_getter):
return dual_net.model_inference_fn(features, False)
def _locked_load_model(self, path):
tf.reset_default_graph()
if path[-3:] == ".pb":
graph_def = tf.GraphDef()
with tf.gfile.FastGFile(path, 'rb') as f:
graph_def.ParseFromString(f.read())
with self._sess.graph.as_default():
self._outputs = tf.import_graph_def(
graph_def,
input_map={'pos_tensor': self._feature_placeholder},
return_elements=['policy_output:0', 'value_output:0'])
else:
with self._sess.graph.as_default():
self._outputs = dual_net.model_inference_fn(
self._feature_placeholder, training=False)
tf.train.Saver().restore(self._sess, path)
def main(argv):
features, labels = dual_net.get_inference_input()
tf_tensors = dual_net.model_inference_fn(features, False)
if len(tf_tensors) != 4:
print("oneoffs/embeddings.py requires you modify")
print("dual_net.model_inference_fn and add a fourth param")
sys.exit(1)
p_out, v_out, logits, shared = tf_tensors
predictions = {'shared': shared}
sess = tf.Session()
tf.train.Saver().restore(sess, FLAGS.model)
try:
progress = tqdm(get_files())
embeddings = []
metadata = []
for i, f in enumerate(progress):
short_f = os.path.basename(f)
short_f = short_f.replace('minigo-cc-evaluator', '')
short_f = short_f.replace('-000', '-')
progress.set_description('Processing %s' % short_f)
processed = []
for idx, p in enumerate(sgf_wrapper.replay_sgf_file(f)):
if idx < FLAGS.first: continue
if idx > FLAGS.last: break
if idx % FLAGS.every != 0: continue
processed.append(features_lib.extract_features(p.position))
metadata.append((f, idx))
if len(processed) > 0:
# If len(processed) gets too large may have to chunk.
res = sess.run(predictions, feed_dict={features: processed})
for r in res['shared']:
embeddings.append(r.flatten())
except:
# Raise shows us the error but only after the finally block executes.
raise
finally:
with open(FLAGS.embedding_file, 'wb') as pickle_file:
pickle.dump([metadata, np.array(embeddings)], pickle_file)
def main(unused_argv):
in_path = FLAGS.in_path
out_path = FLAGS.out_path
assert tf.gfile.Exists(in_path)
# TODO(amj): Why does ensure_dir_exists skip gs paths?
#tf.gfile.MakeDirs(os.path.dirname(out_path))
#assert tf.gfile.Exists(os.path.dirname(out_path))
policy_err = []
value_err = []
print()
with tf.python_io.TFRecordWriter(out_path, OPTS) as writer:
ds_iter = preprocessing.get_input_tensors(FLAGS.batch_size, [in_path],
shuffle_examples=False,
random_rotation=False,
filter_amount=1.0)
with tf.Session() as sess:
features, labels = ds_iter
p_in = labels['pi_tensor']
v_in = labels['value_tensor']
p_out, v_out, logits = dual_net.model_inference_fn(
features, False, FLAGS.flag_values_dict())
tf.train.Saver().restore(sess, FLAGS.model)
# TODO(seth): Add policy entropy.
p_err = tf.nn.softmax_cross_entropy_with_logits_v2(
logits=logits, labels=tf.stop_gradient(p_in))
v_err = tf.square(v_out - v_in)
for _ in tqdm(itertools.count(1)):
try:
# Undo cast in batch_parse_tf_example.
x_in = tf.cast(features, tf.int8)
x, pi, val, pi_err, val_err = sess.run(
[x_in, p_out, v_out, p_err, v_err])
for i, (x_i, pi_i, val_i) in enumerate(zip(x, pi, val)):
# NOTE: The teacher's policy has much higher entropy
# Than the Self-play policy labels which are mostly 0
# expect that resulting file is 3-5x larger.
r = preprocessing.make_tf_example(x_i, pi_i, val_i)
serialized = r.SerializeToString()
writer.write(serialized)
policy_err.extend(pi_err)
value_err.extend(val_err)
except tf.errors.OutOfRangeError:
print()
print("Breaking OutOfRangeError")
break
print("Counts", len(policy_err), len(value_err))
test()
plt.subplot(121)
n, bins, patches = plt.hist(policy_err, 40)
plt.title('Policy Error histogram')
plt.subplot(122)
n, bins, patches = plt.hist(value_err, 40)
plt.title('Value Error')
plt.show()
def loop_body(a, unused_b):
"""Loop body for the tf.while_loop op.
Args:
a: a constant 0
unused_b: a string placeholder (to satisfy the requirement that a
while_loop's condition and body accept the same args as
the loop returns).
Returns:
A TensorFlow subgraph.
"""
# Request features features.
raw_response = tf.contrib.rpc.rpc(
address=config.address,
method=config.get_features_method,
request="",
protocol="grpc",
fail_fast=True,
timeout_in_ms=0,
name="get_features")
# Decode features from a proto to a flat tensor.
_, (batch_id, flat_features) = decode_proto_op.decode_proto(
bytes=raw_response,
message_type='minigo.GetFeaturesResponse',
field_names=['batch_id', 'features'],
output_types=[dtypes.int32, dtypes.float32],
descriptor_source=config.descriptor_path,
name="decode_raw_features")
# Reshape flat features.
features = tf.reshape(
flat_features, [-1, go.N, go.N, features_lib.NEW_FEATURES_PLANES],
name="unflatten_features")
# Run inference.
policy_output, value_output, _ = dual_net.model_inference_fn(
features, False)
# Flatten model outputs.
flat_policy = tf.reshape(policy_output, [-1], name="flatten_policy")
flat_value = value_output # value_output is already flat.
# Encode outputs from flat tensors to a proto.
request_tensors = encode_proto_op.encode_proto(
message_type='minigo.PutOutputsRequest',
field_names=['batch_id', 'policy', 'value'],
sizes=[[1, policy_output_size, value_output_size]],
values=[[batch_id], [flat_policy], [flat_value]],
descriptor_source=config.descriptor_path,
name="encode_outputs")
# Send outputs.
response = tf.contrib.rpc.rpc(
address=config.address,
method=config.put_outputs_method,
request=request_tensors,
protocol="grpc",
fail_fast=True,
timeout_in_ms=0,
name="put_outputs")
return a, response[0]