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# Copyright 2015 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# 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.
# ==============================================================================
"""Tests for tensorflow.python.client.session.Session's list_devices API."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from tensorflow.core.protobuf import cluster_pb2
from tensorflow.core.protobuf import config_pb2
from tensorflow.python import pywrap_tensorflow as tf_session
from tensorflow.python.client import session
from tensorflow.python.framework import errors
from tensorflow.python.framework import ops
from tensorflow.python.framework import test_util
from tensorflow.python.platform import googletest
from tensorflow.python.training import server_lib
class SessionListDevicesTest(test_util.TensorFlowTestCase):
def testListDevices(self):
with session.Session() as sess:
devices = sess.list_devices()
self.assertTrue('/job:localhost/replica:0/task:0/device:CPU:0' in set(
[d.name for d in devices]), devices)
# All valid device incarnations must be non-zero.
self.assertTrue(all(d.incarnation != 0 for d in devices))
def testInvalidDeviceNumber(self):
opts = tf_session.TF_NewSessionOptions()
c_session = tf_session.TF_NewSession(ops.get_default_graph()._c_graph, opts)
raw_device_list = tf_session.TF_SessionListDevices(c_session)
size = tf_session.TF_DeviceListCount(raw_device_list)
with self.assertRaises(errors.InvalidArgumentError):
tf_session.TF_DeviceListMemoryBytes(raw_device_list, size)
tf_session.TF_DeleteDeviceList(raw_device_list)
tf_session.TF_CloseSession(c_session)
def testListDevicesGrpcSession(self):
server = server_lib.Server.create_local_server()
with session.Session(server.target) as sess:
devices = sess.list_devices()
self.assertTrue('/job:local/replica:0/task:0/device:CPU:0' in set(
[d.name for d in devices]), devices)
# All valid device incarnations must be non-zero.
self.assertTrue(all(d.incarnation != 0 for d in devices))
def testListDevicesClusterSpecPropagation(self):
server1 = server_lib.Server.create_local_server()
server2 = server_lib.Server.create_local_server()
cluster_def = cluster_pb2.ClusterDef()
job = cluster_def.job.add()
job.name = 'worker'
job.tasks[0] = server1.target[len('grpc://'):]
job.tasks[1] = server2.target[len('grpc://'):]
config = config_pb2.ConfigProto(cluster_def=cluster_def)
with session.Session(server1.target, config=config) as sess:
devices = sess.list_devices()
device_names = set(d.name for d in devices)
self.assertTrue(
'/job:worker/replica:0/task:0/device:CPU:0' in device_names)
self.assertTrue(
'/job:worker/replica:0/task:1/device:CPU:0' in device_names)
# All valid device incarnations must be non-zero.
self.assertTrue(all(d.incarnation != 0 for d in devices))
if __name__ == '__main__':
googletest.main()
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