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run_server.py
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run_server.py
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# Copyright 2024 Google LLC
#
# 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.
"""Runs a pytorch server."""
import os
from typing import Sequence
# import torch_xla2 first!
import jax
from absl import app, flags
from jetstream.core import server_lib
from jetstream.core.config_lib import ServerConfig, MetricsServerConfig
from jetstream_pt.config import FLAGS, create_engine_from_config_flags
flags.DEFINE_integer("port", 9000, "port to listen on")
flags.DEFINE_integer("threads", 64, "number of worker threads in thread pool")
flags.DEFINE_string(
"config",
"InterleavedCPUTestServer",
"available servers",
)
flags.DEFINE_integer("prometheus_port", 0, "")
flags.DEFINE_bool("enable_jax_profiler", False, "enable jax profiler")
flags.DEFINE_integer("jax_profiler_port", 9999, "port of JAX profiler server")
# pylint: disable-next=all
def main(argv: Sequence[str]):
del argv
os.environ["XLA_FLAGS"] = "--xla_dump_to=/tmp/xla_logs --xla_dump_hlo_as_text"
# No devices for local cpu test. A None for prefill and a None for generate.
devices = server_lib.get_devices()
print(f"devices: {devices}")
engine = create_engine_from_config_flags()
server_config = ServerConfig(
interleaved_slices=(f"tpu={len(jax.devices())}",),
interleaved_engine_create_fns=(lambda a: engine,),
)
print(f"server_config: {server_config}")
metrics_server_config: MetricsServerConfig | None = None
if FLAGS.prometheus_port != 0:
metrics_server_config = MetricsServerConfig(port=FLAGS.prometheus_port)
# We separate credential from run so that we can unit test it with local credentials.
# We would like to add grpc credentials for OSS.
jetstream_server = server_lib.run(
threads=FLAGS.threads,
port=FLAGS.port,
config=server_config,
devices=devices,
metrics_server_config=metrics_server_config,
enable_jax_profiler=FLAGS.enable_jax_profiler,
jax_profiler_port=FLAGS.jax_profiler_port,
)
print("Started jetstream_server....")
jetstream_server.wait_for_termination()
if __name__ == "__main__":
app.run(main)