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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 device function for replicated training."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from tensorflow.python.framework import ops
from tensorflow.python.ops import resource_variable_ops
from tensorflow.python.ops import variables
from tensorflow.python.platform import test
from tensorflow.python.training import device_setter
from tensorflow.python.training import server_lib
class DeviceSetterTest(test.TestCase):
_cluster_spec = server_lib.ClusterSpec({
"ps": ["ps0:2222", "ps1:2222"],
"worker": ["worker0:2222", "worker1:2222", "worker2:2222"]
})
def testCPUOverride(self):
with ops.device(
device_setter.replica_device_setter(cluster=self._cluster_spec)):
with ops.device("/cpu:0"):
v = variables.Variable([1, 2])
w = variables.Variable([2, 1])
with ops.device("/cpu:0"):
a = v + w
self.assertDeviceEqual("/job:ps/task:0/cpu:0", v.device)
self.assertDeviceEqual("/job:ps/task:0/cpu:0", v.initializer.device)
self.assertDeviceEqual("/job:ps/task:1", w.device)
self.assertDeviceEqual("/job:ps/task:1", w.initializer.device)
self.assertDeviceEqual("/job:worker/cpu:0", a.device)
def testResource(self):
with ops.device(
device_setter.replica_device_setter(cluster=self._cluster_spec)):
v = resource_variable_ops.ResourceVariable([1, 2])
self.assertDeviceEqual("/job:ps/task:0", v.device)
def testPS2TasksWithClusterSpecClass(self):
with ops.device(
device_setter.replica_device_setter(cluster=self._cluster_spec)):
v = variables.Variable([1, 2])
w = variables.Variable([2, 1])
a = v + w
self.assertDeviceEqual("/job:ps/task:0", v.device)
self.assertDeviceEqual("/job:ps/task:0", v.initializer.device)
self.assertDeviceEqual("/job:ps/task:1", w.device)
self.assertDeviceEqual("/job:ps/task:1", w.initializer.device)
self.assertDeviceEqual("/job:worker", a.device)
def testPS2TasksPinVariableToJob(self):
with ops.device(
device_setter.replica_device_setter(cluster=self._cluster_spec)):
v = variables.Variable([1, 2])
with ops.device("/job:moon"):
w = variables.Variable([2, 1])
with ops.device("/job:ps"): # Explicit PS job will get task set.
x = variables.Variable([0, 1])
a = v + w + x
self.assertDeviceEqual("/job:ps/task:0", v.device)
self.assertDeviceEqual("/job:ps/task:0", v.initializer.device)
self.assertDeviceEqual("/job:moon", w.device)
self.assertDeviceEqual("/job:moon", w.initializer.device)
self.assertDeviceEqual("/job:ps/task:1", x.device)
self.assertDeviceEqual("/job:ps/task:1", x.initializer.device)
self.assertDeviceEqual("/job:worker", a.device)
def testPS2TasksUseCpuForPS(self):
with ops.device(
device_setter.replica_device_setter(ps_tasks=1, ps_device="/cpu:0")):
v = variables.Variable([1, 2])
with ops.device("/job:moon"):
w = variables.Variable([2, 1])
a = v + w
self.assertDeviceEqual("/cpu:0", v.device)
self.assertDeviceEqual("/cpu:0", v.initializer.device)
self.assertDeviceEqual("/job:moon/cpu:0", w.device)
self.assertDeviceEqual("/job:moon/cpu:0", w.initializer.device)
self.assertDeviceEqual("/job:worker", a.device)
def testPS2TasksNoMerging(self):
with ops.device(
device_setter.replica_device_setter(
cluster=self._cluster_spec, merge_devices=False)):
v = variables.Variable([1, 2])
with ops.device("/job:ps"): # Won't assign task when merge_devices=False.
w = variables.Variable([2, 1])
a = v + w
self.assertDeviceEqual("/job:ps/task:0", v.device)
self.assertDeviceEqual("/job:ps/task:0", v.initializer.device)
self.assertDeviceEqual("/job:ps", w.device)
self.assertDeviceEqual("/job:ps", w.initializer.device)
self.assertDeviceEqual("/job:worker", a.device)
def testPS2TasksWithClusterSpecDict(self):
with ops.device(
device_setter.replica_device_setter(cluster=self._cluster_spec.as_dict(
))):
v = variables.Variable([1, 2])
w = variables.Variable([2, 1])
a = v + w
self.assertDeviceEqual("/job:ps/task:0", v.device)
self.assertDeviceEqual("/job:ps/task:0", v.initializer.device)
self.assertDeviceEqual("/job:ps/task:1", w.device)
self.assertDeviceEqual("/job:ps/task:1", w.initializer.device)
self.assertDeviceEqual("/job:worker", a.device)
def testPS2TasksWithClusterDef(self):
with ops.device(
device_setter.replica_device_setter(
cluster=self._cluster_spec.as_cluster_def())):
v = variables.Variable([1, 2])
w = variables.Variable([2, 1])
a = v + w
self.assertDeviceEqual("/job:ps/task:0", v.device)
self.assertDeviceEqual("/job:ps/task:0", v.initializer.device)
self.assertDeviceEqual("/job:ps/task:1", w.device)
self.assertDeviceEqual("/job:ps/task:1", w.initializer.device)
self.assertDeviceEqual("/job:worker", a.device)
def testPS2TasksWithDevice(self):
cluster_spec = server_lib.ClusterSpec({
"sun": ["sun0:2222", "sun1:2222", "sun2:2222"],
"moon": ["moon0:2222", "moon1:2222"]
})
with ops.device(
device_setter.replica_device_setter(
ps_device="/job:moon",
worker_device="/job:sun",
cluster=cluster_spec.as_cluster_def())):
v = variables.Variable([1, 2])
w = variables.Variable([2, 1])
a = v + w
self.assertDeviceEqual("/job:moon/task:0", v.device)
self.assertDeviceEqual("/job:moon/task:0", v.initializer.device)
self.assertDeviceEqual("/job:moon/task:1", w.device)
self.assertDeviceEqual("/job:moon/task:1", w.initializer.device)
self.assertDeviceEqual("/job:sun", a.device)
def testPS2TasksWithCPUConstraint(self):
cluster_spec = server_lib.ClusterSpec({
"sun": ["sun0:2222", "sun1:2222", "sun2:2222"],
"moon": ["moon0:2222", "moon1:2222"]
})
with ops.device(
device_setter.replica_device_setter(
ps_device="/job:moon/cpu:0",
worker_device="/job:sun",
cluster=cluster_spec.as_cluster_def())):
v = variables.Variable([1, 2])
w = variables.Variable([2, 1])
a = v + w
self.assertDeviceEqual("/job:moon/task:0/cpu:0", v.device)
self.assertDeviceEqual("/job:moon/task:0/cpu:0", v.initializer.device)
self.assertDeviceEqual("/job:moon/task:1/cpu:0", w.device)
self.assertDeviceEqual("/job:moon/task:1/cpu:0", w.initializer.device)
self.assertDeviceEqual("/job:sun", a.device)
if __name__ == "__main__":
test.main()
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