def run(args): if args.standalone: etcd_server = EtcdServer() etcd_server.start() args.rdzv_backend = "etcd" args.rdzv_endpoint = etcd_server.get_endpoint() args.rdzv_id = str(uuid.uuid4()) log.info( f"\n**************************************\n" f"Rendezvous info:\n" f"--rdzv_backend={args.rdzv_backend} " f"--rdzv_endpoint={args.rdzv_endpoint} " f"--rdzv_id={args.rdzv_id}\n" f"**************************************\n" ) config, cmd = config_from_args(args) try: elastic_launch( config=config, entrypoint=cmd[0], )(*cmd[1:]) finally: if args.standalone: etcd_server.stop()
def test_etcd_server_start_stop(self): server = EtcdServer() server.start() try: port = server.get_port() host = server.get_host() self.assertGreater(port, 0) self.assertEqual("localhost", host) self.assertEqual(f"{host}:{port}", server.get_endpoint()) self.assertIsNotNone(server.get_client().version) finally: server.stop()
def main(args=None): # If ``args`` not passed, defaults to ``sys.argv[:1]`` args = parse_args(args) min_nodes, max_nodes = parse_min_max_nnodes(args.nnodes) assert 0 < min_nodes <= max_nodes assert args.max_restarts >= 0 elastic_agent = None if args.standalone: etcd_server = EtcdServer() etcd_server.start() args.rdzv_backend = "etcd" args.rdzv_endpoint = etcd_server.get_endpoint() args.rdzv_id = str(uuid.uuid4()) log.info(f"\n**************************************\n" f"Rendezvous info:\n" f"--rdzv_backend={args.rdzv_backend} " f"--rdzv_endpoint={args.rdzv_endpoint} " f"--rdzv_id={args.rdzv_id}\n" f"**************************************\n") nproc_per_node = determine_local_world_size(args.nproc_per_node) if "OMP_NUM_THREADS" not in os.environ and nproc_per_node > 1: omp_num_threads = 1 print( f"*****************************************\n" f"Setting OMP_NUM_THREADS environment variable for each process to be " f"{omp_num_threads} in default, to avoid your system being overloaded, " f"please further tune the variable for optimal performance in " f"your application as needed. \n" f"*****************************************") # This env variable will be passed down to the subprocesses os.environ["OMP_NUM_THREADS"] = str(omp_num_threads) with_python = not args.no_python cmd = [] if with_python: cmd = [sys.executable, "-u"] if args.module: cmd.append("-m") else: if args.module: raise ValueError("Don't use both the '--no_python' flag" " and the '--module' flag at the same time.") cmd.append(args.training_script) cmd.extend(args.training_script_args) rdzv_parameters = RendezvousParameters( backend=args.rdzv_backend, endpoint=args.rdzv_endpoint, run_id=args.rdzv_id, min_nodes=min_nodes, max_nodes=max_nodes, **_parse_rendezvous_config(args.rdzv_conf), ) rdzv_handler = rdzv_registry.get_rendezvous_handler(rdzv_parameters) try: spec = WorkerSpec( role=args.role, local_world_size=nproc_per_node, entrypoint=cmd[0], args=(*cmd[1:], ), rdzv_handler=rdzv_handler, max_restarts=args.max_restarts, monitor_interval=args.monitor_interval, redirects=Std.from_str(args.redirects), tee=Std.from_str(args.tee), ) metrics.initialize_metrics() elastic_agent = LocalElasticAgent(spec=spec, start_method=args.start_method, log_dir=args.log_dir) run_result = elastic_agent.run(spec.role) events.record( elastic_agent.get_agent_status_event(WorkerState.SUCCEEDED)) if run_result.is_failed(): # ChildFailedError is treated specially by @record # if the error files for the failed children exist # @record will copy the first error (root cause) # to the error file of the launcher process raise ChildFailedError( name=args.training_script, failures=run_result.failures, ) except ChildFailedError: raise except Exception: if elastic_agent: events.record( elastic_agent.get_agent_status_event(WorkerState.FAILED)) else: events.record(_construct_event(args)) raise finally: rdzv_handler.shutdown() if args.standalone: etcd_server.stop()