def mnist_mlp(args):
# write tensorflow models
x = tf.placeholder(tf.float32, [args.batch_size, 784])
t = tf.placeholder(tf.float32, [args.batch_size, 10])
w = tf.Variable(tf.zeros([784, 10]))
b = tf.Variable(tf.zeros([10]))
y = tf.matmul(x, w) + b
cost = tf.reduce_mean(-tf.reduce_sum(
t * tf.log(tf.nn.softmax(y)), reduction_indices=[1]))
init = tf.global_variables_initializer()
# import graph_def
importer = TFImporter()
importer.import_graph_def(tf.get_default_graph().as_graph_def())
# get handle of ngraph ops
x_ng, t_ng, cost_ng, init_op_ng = importer.get_op_handle([x, t, cost, init])
# transformer and computations
with ExecutorFactory() as ex:
updates = CommonSGDOptimizer(args.lrate).minimize(cost_ng, cost_ng.variables())
train_comp = ex.executor(ng.sequential([updates, cost_ng]), x_ng, t_ng)
init_comp = ex.executor(init_op_ng)
ex.transformer.initialize()
# train
if args.random_data is not None:
mnist = args.random_data
mnist.reset(0)
else:
mnist = input_data.read_data_sets(args.data_dir, one_hot=True)
init_comp()
ng_cost_vals = []
for idx in range(args.max_iter):
batch_xs, batch_ys = mnist.train.next_batch(args.batch_size)
cost_val = train_comp(batch_xs, batch_ys)
ng_cost_vals.append(float(cost_val))
print("[Iter %s] Cost = %s" % (idx, cost_val))
# train in tensorflow as comparison
with tf.Session() as sess:
# train in tensorflow
train_step = tf.train.GradientDescentOptimizer(args.lrate).minimize(cost)
sess.run(init)
if args.random_data is not None:
mnist = args.random_data
mnist.reset(0)
else:
mnist = input_data.read_data_sets(args.data_dir, one_hot=True)
tf_cost_vals = []
for idx in range(args.max_iter):
batch_xs, batch_ys = mnist.train.next_batch(args.batch_size)
cost_val, _ = sess.run([cost, train_step],
feed_dict={x: batch_xs, t: batch_ys})
tf_cost_vals.append(float(cost_val))
print("[Iter %s] Cost = %s" % (idx, cost_val))
return ng_cost_vals, tf_cost_vals
def logistic_regression(args):
# setups -> xs: (N, C), y: (N, 1)
xs_np = np.array([[0.52, 1.12, 0.77], [0.88, -1.08, 0.15],
[0.52, 0.06, -1.30], [0.74, -2.49, 1.39]])
ys_np = np.array([[1], [1], [0], [1]])
# placeholders
x = tf.placeholder(tf.float32, shape=(4, 3))
t = tf.placeholder(tf.float32, shape=(4, 1))
w = tf.Variable(tf.zeros([3, 1]))
y = tf.nn.sigmoid(tf.matmul(x, w))
log_likelihoods = tf.log(y) * t + tf.log(1 - y) * (1 - t)
cost = -tf.reduce_sum(log_likelihoods)
init_op = tf.global_variables_initializer()
# import graph_def
importer = TFImporter()
importer.import_graph_def(tf.get_default_graph().as_graph_def())
# get handle of ngraph ops
x_ng, t_ng, cost_ng, init_op_ng = importer.get_op_handle(
[x, t, cost, init_op])
# transformer and computations
transformer = ngt.make_transformer()
updates = util.CommonSGDOptimizer(args.lrate).minimize(
cost_ng, cost_ng.variables())
train_comp = transformer.computation([cost_ng, updates], x_ng, t_ng)
init_comp = transformer.computation(init_op_ng)
transformer.initialize()
# train
init_comp()
ng_cost_vals = []
for idx in range(args.max_iter):
cost_val, _ = train_comp(xs_np, ys_np)
ng_cost_vals.append(float(cost_val))
print("[Iter %s] Cost = %s" % (idx, cost_val))
transformer.close()
# tensorflow for comparison
with tf.Session() as sess:
train_step = tf.train.GradientDescentOptimizer(
args.lrate).minimize(cost)
sess.run(init_op)
tf_cost_vals = []
for idx in range(args.max_iter):
cost_val, _ = sess.run([cost, train_step],
feed_dict={
x: xs_np,
t: ys_np
})
tf_cost_vals.append(float(cost_val))
print("[Iter %s] Cost = %s" % (idx, cost_val))
return ng_cost_vals, tf_cost_vals
def train_mnist(args):
# write tensorflow models
x = tf.placeholder(tf.float32, [args.batch_size, 784])
t = tf.placeholder(tf.float32, [args.batch_size, 10])
w = tf.Variable(tf.zeros([784, 10]))
b = tf.Variable(tf.zeros([10]))
y = tf.matmul(x, w) + b
cost = tf.reduce_mean(
-tf.reduce_sum(t * tf.log(tf.nn.softmax(y)), reduction_indices=[1]))
init = tf.initialize_all_variables()
# import graph_def
with tf.Session() as sess:
graph_def = sess.graph_def
importer = TFImporter()
importer.parse_graph_def(graph_def)
# get handle of ngraph ops
x_ng, t_ng, cost_ng, init_op_ng = importer.get_op_handle(
[x, t, cost, init])
# transformer and computations
transformer = ngt.make_transformer()
updates = SGDOptimizer(args.lrate).minimize(cost_ng)
train_comp = transformer.computation([cost_ng, updates], x_ng, t_ng)
init_comp = transformer.computation(init_op_ng)
transformer.initialize()
# train
mnist = input_data.read_data_sets(args.data_dir, one_hot=True)
init_comp()
for idx in range(args.max_iter):
batch_xs, batch_ys = mnist.train.next_batch(args.batch_size)
cost_val, _ = train_comp(batch_xs, batch_ys)
print("[Iter %s] Cost = %s" % (idx, cost_val))
# train in tensorflow as comparison
with tf.Session() as sess:
# train in tensorflow
train_step = tf.train.GradientDescentOptimizer(
args.lrate).minimize(cost)
sess.run(init)
mnist = input_data.read_data_sets(args.data_dir, one_hot=True)
for idx in range(args.max_iter):
batch_xs, batch_ys = mnist.train.next_batch(args.batch_size)
cost_val, _ = sess.run([cost, train_step],
feed_dict={
x: batch_xs,
t: batch_ys
})
print("[Iter %s] Cost = %s" % (idx, cost_val))
def ng_retrain_mnist(args):
"""
Load meta_graph / checkpoint and retrain in ng for max_iter
Args:
args: command line arguments
"""
# dataset, with offset max_iter
if args.random_data is not None:
mnist = args.random_data
mnist.reset(0)
else:
mnist = input_data.read_data_sets(args.data_dir, one_hot=True)
for _ in range(args.max_iter):
mnist.train.next_batch(args.batch_size)
# init importer
importer = TFImporter()
# parse meta-graph and model checkpoint file
importer.import_meta_graph(args.checkpoint_path + '.meta',
checkpoint_path=args.checkpoint_path)
# get collections, must be specified by `tf.add_to_collection` before save
x_ng, t_ng, cost_ng, init_op_ng = importer.get_collection_handle(
['x', 't', 'cost', 'init_op'])
# get variable restore op
restore_op_ng = importer.get_restore_op()
# transformer and computations
transformer = ngt.make_transformer()
updates = util.CommonSGDOptimizer(args.lrate).minimize(
cost_ng, cost_ng.variables())
train_comp = transformer.computation([cost_ng, updates], x_ng, t_ng)
init_comp = transformer.computation(init_op_ng)
restore_comp = transformer.computation(restore_op_ng)
transformer.initialize()
# train in ngraph
init_comp()
restore_comp()
ng_cost_vals = []
for idx in range(args.max_iter):
batch_xs, batch_ys = mnist.train.next_batch(args.batch_size)
cost_val, _ = train_comp(batch_xs, batch_ys)
ng_cost_vals.append(float(cost_val))
print("[Iter %s] Cost = %s" % (idx, cost_val))
transformer.close()
return ng_cost_vals
def ng_run(self,
tf_target_node,
tf_feed_dict=None,
print_ng_result=False,
verbose=False):
"""
Run and get ngrpah results
Args:
tf_target_node: target node in tf
tf_feed_dict: feed_dict in tf
print_ng_result: prints ng_result if set to True
verbose: prints tf's node_def if set to True
Returns:
ng_result
"""
# init importer, transformer
importer = TFImporter()
importer.import_protobuf(self.pb_txt_path, verbose=verbose)
transformer = ngt.make_transformer()
# set target node
ng_target_node = importer.get_op_handle_by_name(
tf_target_node.name[:-2])
# evaluate ngraph
if tf_feed_dict is not None:
# get targeting nodes for ng, convert tf's feed dict to list
tf_placeholder_nodes = [node for (node, _) in tf_feed_dict.items()]
tf_placeholder_names = [node.name for node in tf_placeholder_nodes]
ng_placeholder_nodes = [
importer.get_op_handle_by_name(name[:-2])
for name in tf_placeholder_names
]
ng_placeholder_vals = [val for (_, val) in tf_feed_dict.items()]
# evaluate ngraph result
ng_result_comp = transformer.computation([ng_target_node],
*ng_placeholder_nodes)
if importer.init_ops:
init_comp = transformer.computation(importer.init_ops)
init_comp()
ng_result = ng_result_comp(*ng_placeholder_vals)[0]
else:
ng_result_comp = transformer.computation([ng_target_node])
if importer.init_ops:
init_comp = transformer.computation(importer.init_ops)
init_comp()
ng_result = ng_result_comp()[0]
if print_ng_result:
print(ng_result)
return ng_result
def ng_run(self,
tf_target_node,
tf_init_op=None,
tf_feed_dict={},
print_ng_result=False,
verbose=False):
"""
Run and get ngraph results
Args:
tf_target_node: target node in tf
tf_feed_dict: feed_dict in tf
print_ng_result: prints ng_result if set to True
verbose: prints tf's node_def if set to True
Returns:
ng_result
"""
# init importer, transformer
importer = TFImporter()
graph_def = tf.GraphDef()
graph_def.ParseFromString(self.graph_string)
importer.import_graph_def(graph_def, verbose=verbose)
# set target node
ng_target_node = importer.get_op_handle_by_name(
tf_target_node.name[:-2])
# get targeting nodes for ng, convert tf's feed dict to list
ng_feed_dict = {
importer.get_op_handle_by_name(node.name[:-2]): val
for (node, val) in tf_feed_dict.items()
}
# evaluate ngraph
with ExecutorFactory() as ex:
ng_result_comp = ex.transformer.computation(
ng_target_node, *ng_feed_dict.keys())
if tf_init_op:
ex.transformer.computation(
importer.get_op_handle(tf_init_op))()
ng_result = ng_result_comp(feed_dict=ng_feed_dict)
return ng_result
def test_mnist_softmax(self):
# parameters
max_iter = 10
lrate = 0.1
bsz = 128
# write tensorflow models
x = tf.placeholder(tf.float32, [bsz, 784])
t = tf.placeholder(tf.float32, [bsz, 10])
W = tf.Variable(tf.zeros([784, 10]))
b = tf.Variable(tf.zeros([10]))
y = tf.matmul(x, W) + b
cost = tf.reduce_mean(-tf.reduce_sum(
t * tf.log(tf.nn.softmax(y)), reduction_indices=[1]))
init_op = tf.initialize_all_variables()
# import graph_def
with tf.Session() as sess:
graph_def = sess.graph_def
importer = TFImporter()
importer.parse_graph_def(graph_def)
# get handle of ngraph ops
x_ng, t_ng, cost_ng, init_op_ng = importer.get_op_handle(
[x, t, cost, init_op])
# transformer and computations
transformer = ngt.make_transformer()
updates = SGDOptimizer(lrate).minimize(cost_ng)
train_comp = transformer.computation([cost_ng, updates], x_ng, t_ng)
init_comp = transformer.computation(init_op_ng)
transformer.initialize()
# train
mnist = input_data.read_data_sets('/tmp/data', one_hot=True)
init_comp()
ng_costs = []
for idx in range(max_iter):
batch_xs, batch_ys = mnist.train.next_batch(bsz)
cost_val, _ = train_comp(batch_xs, batch_ys)
print("[Iter %s] Cost = %s" % (idx, cost_val))
ng_costs.append(float(cost_val))
# train in tensorflow as comparison
with tf.Session() as sess:
# train in tensorflow
train_step = tf.train.GradientDescentOptimizer(lrate).minimize(
cost)
sess.run(init_op)
mnist = input_data.read_data_sets('/tmp/data', one_hot=True)
tf_costs = []
for idx in range(max_iter):
batch_xs, batch_ys = mnist.train.next_batch(bsz)
cost_val, _ = sess.run([cost, train_step],
feed_dict={x: batch_xs,
t: batch_ys})
print("[Iter %s] Cost = %s" % (idx, cost_val))
tf_costs.append(cost_val)
# check results
assert np.allclose(
np.asarray(tf_costs).astype(np.float32),
np.asarray(ng_costs).astype(np.float32))
max_iter = 10
lrate = 0.1
# placeholders
x = tf.placeholder(tf.float32, shape=(4, 3))
t = tf.placeholder(tf.float32, shape=(4, 1))
w = tf.Variable(tf.zeros([3, 1]))
y = tf.nn.sigmoid(tf.matmul(x, w))
log_likelihoods = tf.log(y) * t + tf.log(1 - y) * (1 - t)
cost = -tf.reduce_sum(log_likelihoods)
init_op = tf.initialize_all_variables()
# import graph_def
with tf.Session() as sess:
graph_def = sess.graph_def
importer = TFImporter()
importer.parse_graph_def(graph_def)
# get handle of ngraph ops
x_ng, t_ng, cost_ng, init_op_ng = importer.get_op_handle([x, t, cost, init_op])
# transformer and computations
transformer = ngt.make_transformer()
updates = SGDOptimizer(lrate).minimize(cost_ng)
train_comp = transformer.computation([cost_ng, updates], x_ng, t_ng)
init_comp = transformer.computation(init_op_ng)
transformer.initialize()
# train
init_comp()
for idx in range(max_iter):
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ----------------------------------------------------------------------------
from __future__ import print_function
import tensorflow as tf
from ngraph.testing import ExecutorFactory
from ngraph.frontends.tensorflow.tf_importer.importer import TFImporter
# tensorflow ops
x = tf.constant(1.)
y = tf.constant(2.)
f = x + y
# import
importer = TFImporter()
importer.import_graph_def(tf.get_default_graph().as_graph_def())
# get handle
f_ng = importer.get_op_handle(f)
# execute
with ExecutorFactory() as ex:
f_result = ex.executor(f_ng)()
print(f_result)
[0.74, -2.49, 1.39]]) ys_np = np.array([[1], [1], [0], [1]]) max_iter = 10 lrate = 0.1 # placeholders x = tf.placeholder(tf.float32, shape=(4, 3)) t = tf.placeholder(tf.float32, shape=(4, 1)) w = tf.Variable(tf.zeros([3, 1])) y = tf.nn.sigmoid(tf.matmul(x, w)) log_likelihoods = tf.log(y) * t + tf.log(1 - y) * (1 - t) cost = -tf.reduce_sum(log_likelihoods) init_op = tf.initialize_all_variables() # import graph_def importer = TFImporter() importer.import_graph_def(tf.get_default_graph().as_graph_def()) # get handle of ngraph ops x_ng, t_ng, cost_ng, init_op_ng = importer.get_op_handle([x, t, cost, init_op]) # transformer and computations transformer = ngt.make_transformer() updates = SGDOptimizer(lrate).minimize(cost_ng) train_comp = transformer.computation([cost_ng, updates], x_ng, t_ng) init_comp = transformer.computation(init_op_ng) transformer.initialize() # train init_comp() for idx in range(max_iter):
# # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # ---------------------------------------------------------------------------- from __future__ import print_function from ngraph.frontends.tensorflow.tf_importer.importer import TFImporter import tensorflow as tf import ngraph.transformers as ngt # tensorflow ops x = tf.constant(1.) y = tf.constant(2.) f = x + y # import importer = TFImporter() importer.parse_graph_def(tf.Session().graph_def) # get handle f_ng = importer.get_op_handle(f) # execute f_result = ngt.make_transformer().computation(f_ng)() print(f_result)