def create_pserver(model_zoo_path, model_def, grads_to_wait, use_async,
num_ps_pods):
ports = [i + 12345 for i in range(num_ps_pods)]
channels = []
for port in ports:
addr = "localhost:%d" % port
channel = build_channel(addr)
channels.append(channel)
pservers = []
for port in ports:
args = PserverArgs(
grads_to_wait=grads_to_wait,
use_async=True,
port=port,
model_zoo=model_zoo_path,
model_def=model_def,
)
pserver = ParameterServer(args)
pserver.prepare()
pservers.append(pserver)
for channel in channels:
grpc.channel_ready_future(channel).result()
return ports, channels, pservers
def _create_pserver_and_channel(self, ports):
pservers = []
channels = []
for port in ports:
args = PserverArgs(
grads_to_wait=1,
use_async=False,
port=port,
model_zoo=self._model_zoo_path,
model_def=self._model_def,
)
pserver = ParameterServer(args)
pserver.prepare()
pservers.append(pserver)
addr = "localhost:%d" % port
channel = grpc.insecure_channel(
addr,
options=[
(
"grpc.max_send_message_length",
GRPC.MAX_SEND_MESSAGE_LENGTH,
),
(
"grpc.max_receive_message_length",
GRPC.MAX_RECEIVE_MESSAGE_LENGTH,
),
],
)
channels.append(channel)
return pservers, channels
def test_restore_parameters_from_checkpoint(self):
checkpoint_dir_for_init = (
"elasticdl/python/tests/testdata/functional_ckpt/version-100")
args = PserverArgs(
ps_id=0,
num_ps_pods=2,
model_zoo=_test_model_zoo_path,
model_def="test_module.custom_model",
checkpoint_dir_for_init=checkpoint_dir_for_init,
lr_scheduler="learning_rate_scheduler",
)
pserver_0 = ParameterServer(args)
embedding_table = pserver_0.parameters.embedding_params["embedding"]
self.assertEqual(list(embedding_table.embedding_vectors.keys()),
[0, 2])
self.assertEqual(
list(pserver_0.parameters.non_embedding_params.keys()),
["dense/kernel:0"],
)
self.assertTrue(
np.array_equal(
pserver_0.parameters.non_embedding_params["dense/kernel:0"].
numpy(),
np.array([[1], [1]], dtype=int),
))
self.assertEqual(pserver_0.parameters.version, 100)
args = PserverArgs(
ps_id=1,
num_ps_pods=2,
model_zoo=_test_model_zoo_path,
model_def="test_module.custom_model",
checkpoint_dir_for_init=checkpoint_dir_for_init,
lr_scheduler="learning_rate_scheduler",
)
pserver_1 = ParameterServer(args)
embedding_table = pserver_1.parameters.embedding_params["embedding"]
self.assertEqual(list(embedding_table.embedding_vectors.keys()),
[1, 3])
self.assertEqual(
list(pserver_1.parameters.non_embedding_params.keys()),
["dense/bias:0"],
)
self.assertTrue(
np.array_equal(
pserver_1.parameters.non_embedding_params["dense/bias:0"].
numpy(),
np.array([1], dtype=int),
))
self.assertEqual(pserver_1.parameters.version, 100)
def create_server_and_stub(self, grads_to_wait, lr_staleness_modulation,
use_async, **kwargs):
args = PserverArgs(grads_to_wait=grads_to_wait,
lr_staleness_modulation=lr_staleness_modulation,
use_async=use_async,
port=self._port,
model_zoo=_test_model_zoo_path,
model_def="test_module.custom_model",
**kwargs)
pserver = ParameterServer(args)
pserver.prepare()
self._parameters = pserver.parameters
self._server = pserver.server
self._stub = elasticdl_pb2_grpc.PserverStub(self._channel)
self._lr = 0.1
def _create_pserver(self, model_def, num):
self._ports = [i + 12345 for i in range(num)]
for port in self._ports:
addr = "localhost:%d" % port
channel = build_channel(addr)
self._channels.append(channel)
self._model_def = model_def
for port in self._ports:
args = PserverArgs(
grads_to_wait=1,
use_async=True,
port=port,
model_zoo=self._model_zoo_path,
model_def=self._model_def,
)
pserver = ParameterServer(args)
pserver.prepare()
self._pservers.append(pserver)
def test_restore_parameters_from_checkpoint(self):
checkpoint_dir = "elasticdl/python/tests/testdata/ps_ckpt"
checkpoint_saver = CheckpointSaver(checkpoint_dir, 0, 0, False)
params = Parameters()
table = EmbeddingTable("embedding", 2, "random_uniform")
table.set([0, 1, 2, 3], np.ones((4, 2), dtype=np.float32))
params.embedding_params["embedding"] = table
params.non_embedding_params["dense/kernel:0"] = tf.Variable(
[[1.0], [1.0]]
)
params.non_embedding_params["dense/bias:0"] = tf.Variable([1.0])
params.version = 100
model_pb = params.to_model_pb()
checkpoint_saver.save(100, model_pb, False)
checkpoint_dir_for_init = checkpoint_dir + "/version-100"
args = PserverArgs(
ps_id=0,
num_ps_pods=2,
model_zoo=_test_model_zoo_path,
model_def="test_module.custom_model",
checkpoint_dir_for_init=checkpoint_dir_for_init,
)
pserver_0 = ParameterServer(args)
embedding_table = pserver_0.parameters.embedding_params["embedding"]
self.assertEqual(
list(embedding_table.embedding_vectors.keys()), [0, 2]
)
self.assertEqual(
list(pserver_0.parameters.non_embedding_params.keys()),
["dense/kernel:0"],
)
self.assertTrue(
np.array_equal(
pserver_0.parameters.non_embedding_params[
"dense/kernel:0"
].numpy(),
np.array([[1], [1]], dtype=int),
)
)
self.assertEqual(pserver_0.parameters.version, 100)
args = PserverArgs(
ps_id=1,
num_ps_pods=2,
model_zoo=_test_model_zoo_path,
model_def="test_module.custom_model",
checkpoint_dir_for_init=checkpoint_dir_for_init,
)
pserver_1 = ParameterServer(args)
embedding_table = pserver_1.parameters.embedding_params["embedding"]
self.assertEqual(
list(embedding_table.embedding_vectors.keys()), [1, 3]
)
self.assertEqual(
list(pserver_1.parameters.non_embedding_params.keys()),
["dense/bias:0"],
)
self.assertTrue(
np.array_equal(
pserver_1.parameters.non_embedding_params[
"dense/bias:0"
].numpy(),
np.array([1], dtype=int),
)
)
self.assertEqual(pserver_1.parameters.version, 100)
def main():
args = parse_ps_args()
pserver = ParameterServer(args)
pserver.prepare()
pserver.run()