# Copyright (c) 2018 PaddlePaddle 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. from __future__ import print_function import time import ast import unittest import os import sys import signal import subprocess import six import argparse import pickle import random import numpy as np import time import paddle import paddle.fluid as fluid from paddle.fluid import compiler import paddle.fluid.dygraph as dygraph from paddle.fluid.dygraph.base import to_variable from paddle.fluid.dygraph.parallel import DataParallel from paddle.fluid.incubate.fleet.collective import fleet, DistributedStrategy import paddle.fluid.incubate.fleet.base.role_maker as role_maker RUN_STEP = 5 DEFAULT_BATCH_SIZE = 2 DIST_UT_PORT = 0 def print_to_out(out_losses): sys.stdout.buffer.write(pickle.dumps(out_losses)) def print_to_err(class_name, log_str): localtime = time.asctime(time.localtime(time.time())) print_str = localtime + "\t" + class_name + "\t" + log_str sys.stderr.buffer.write(pickle.dumps(print_str)) def eprint(*args, **kwargs): print(*args, file=sys.stderr, **kwargs) class TestDistRunnerBase(object): def get_model(self, batch_size=DEFAULT_BATCH_SIZE, lr=0.1, single_device=False, use_dgc=False, dist_strategy=None): raise NotImplementedError( "get_model should be implemented by child classes.") @staticmethod def get_transpiler(trainer_id, main_program, pserver_endpoints, trainers, sync_mode, dc_asgd=False, current_endpoint=None, nccl_comm_num=1, hogwild_mode=False): # NOTE: import fluid until runtime, or else forking processes will cause error. config = fluid.DistributeTranspilerConfig() config.enable_dc_asgd = dc_asgd config.sync_mode = sync_mode config.runtime_split_send_recv = hogwild_mode if nccl_comm_num > 1: config.nccl_comm_num = nccl_comm_num # config.runtime_split_send_recv = True t = fluid.DistributeTranspiler(config=config) t.transpile( trainer_id=trainer_id, program=main_program, pservers=pserver_endpoints, trainers=trainers, sync_mode=sync_mode, current_endpoint=current_endpoint) return t @staticmethod def get_lr_scheduler(program): lr_sheduler = None if hasattr(program, 'lr_sheduler'): from paddle.optimizer.lr import LRScheduler lr_sheduler = program.lr_sheduler assert isinstance(lr_sheduler, LRScheduler), "must be LRScheduler" return lr_sheduler def run_pserver(self, args): self.lr = args.lr self.get_model(batch_size=args.batch_size) # NOTE: pserver should not call memory optimize t = self.get_transpiler( trainer_id=args.trainer_id, main_program=fluid.default_main_program(), pserver_endpoints=args.endpoints, trainers=args.trainers, sync_mode=args.sync_mode, dc_asgd=args.dc_asgd, hogwild_mode=args.hogwild) pserver_prog = t.get_pserver_program(args.current_endpoint) startup_prog = t.get_startup_program(args.current_endpoint, pserver_prog) place = fluid.CPUPlace() exe = fluid.Executor(place) exe.run(startup_prog) print_to_err(type(self).__name__, "run pserver startup program done.") exe.run(pserver_prog) print_to_err(type(self).__name__, "run pserver main program done.") def run_pipeline_trainer(self, args): self.lr = args.lr dist_strategy = DistributedStrategy() test_program, avg_cost, train_reader, test_reader, batch_acc, predict, data_loader = \ self.get_model(batch_size=args.batch_size, dist_strategy=dist_strategy) device_id = int(os.getenv("FLAGS_selected_gpus", "0")) eprint(type(self).__name__, "device_id: %d." % device_id) place = fluid.CUDAPlace(device_id) exe = fluid.Executor(place) exe.run(fluid.default_startup_program()) eprint(type(self).__name__, "run worker startup program done.") data_loader.set_sample_list_generator(train_reader, place) data_loader.start() print_to_err(type(self).__name__, "begin to train on trainer") out_losses = [] main_program = fluid.default_main_program() lr_sheduler = self.get_lr_scheduler(main_program) for i in six.moves.xrange(RUN_STEP): loss = exe.run(main_program, fetch_list=[avg_cost]) loss = loss[0] if loss else None out_losses.append(loss) print_to_err(type(self).__name__, "run step %d finished" % i) if lr_sheduler is not None: lr_sheduler.step() data_loader.reset() print_to_err(type(self).__name__, "trainer run finished") sys.stdout.buffer.write(pickle.dumps(out_losses)) def run_use_fleet_api_20_trainer(self, args): """ 1. remove codes for DistributedStrategy and leave the DistributedStrategy part to get_model() 2. to run with fleet 2.0 api, set flags _use_fleet_api and _use_fleet_api_20 to True 3. for now, not support test for model save """ assert args.update_method == "nccl2" or "bkcl" self.lr = args.lr print_to_err("use_fleet 2.0", "fleet.node_num:") test_program, avg_cost, train_reader, test_reader, batch_acc, predict = \ self.get_model(batch_size=args.batch_size) if fluid.core.is_compiled_with_cuda(): device_id = int(os.getenv("FLAGS_selected_gpus", "0")) place = fluid.CUDAPlace(device_id) elif fluid.core.is_compiled_with_xpu(): device_id = int(os.getenv("FLAGS_selected_xpus", "0")) place = fluid.XPUPlace(device_id) else: raise ValueError( "fleet dygraph api must in paddlepaddle-xpu or paddlepaddle-gpu." ) exe = fluid.Executor(place) exe.run(fluid.default_startup_program()) eprint(type(self).__name__, "run worker startup program done.") feed_var_list = [ var for var in fluid.default_main_program().global_block().vars.values() if var.is_data ] eprint("feed_var_list:", feed_var_list) if feed_var_list[0].name == 'label': feed_var_list = feed_var_list[::-1] feeder = fluid.DataFeeder(feed_var_list, place) reader_generator = train_reader() def get_data(): origin_batch = next(reader_generator) if paddle.distributed.get_world_size( ) == 1 and args.update_method == 'gloo': # Gloo single mode return origin_batch elif args.update_method != "local" and args.use_reader_alloc: new_batch = [] for offset, item in enumerate(origin_batch): if offset % 2 == args.trainer_id: new_batch.append(item) return new_batch else: return origin_batch print_to_err(type(self).__name__, "begin to train on trainer") out_losses = [] for i in six.moves.xrange(RUN_STEP): loss, = exe.run(fluid.default_main_program(), fetch_list=[avg_cost.name], feed=feeder.feed(get_data())) out_losses.append(loss[0]) print_to_err(type(self).__name__, "run step %d finished" % i) print_to_err(type(self).__name__, "trainer run finished") print_to_err(type(self).__name__, "dist losses: {}".format(out_losses)) sys.stdout.buffer.write(pickle.dumps(out_losses)) def run_use_fleet_api_trainer(self, args): assert args.update_method == "nccl2" or "bkcl" self.lr = args.lr exec_strategy = fluid.ExecutionStrategy() exec_strategy.num_threads = 1 dist_strategy = DistributedStrategy() dist_strategy.exec_strategy = exec_strategy dist_strategy.fuse_memory_size = 1 # MB dist_strategy.fuse_laryer_size = 1 if args.use_local_sgd: dist_strategy.use_local_sgd = True if args.ut4grad_allreduce: dist_strategy._ut4grad_allreduce = True if args.sync_batch_norm: dist_strategy.sync_batch_norm = True role = role_maker.PaddleCloudRoleMaker(is_collective=True) fleet.init(role) print_to_err("use_fleet", "fleet.node_num:") # "fleet.node_id:", fleet.node_id(), # "fleet.trainer_num:", fleet.worker_num()) test_program, avg_cost, train_reader, test_reader, batch_acc, predict = \ self.get_model(batch_size=args.batch_size, dist_strategy=dist_strategy) trainer_prog = fleet._origin_program dist_prog = fleet.main_program if fluid.core.is_compiled_with_cuda(): device_id = int(os.getenv("FLAGS_selected_gpus", "0")) place = fluid.CUDAPlace(device_id) elif fluid.core.is_compiled_with_xpu(): device_id = int(os.getenv("FLAGS_selected_xpus", "0")) place = fluid.XPUPlace(device_id) else: raise ValueError( "fleet dygraph api must in paddlepaddle-xpu or paddlepaddle-gpu." ) exe = fluid.Executor(place) exe.run(fluid.default_startup_program()) eprint(type(self).__name__, "run worker startup program done.") feed_var_list = [ var for var in trainer_prog.global_block().vars.values() if var.is_data ] eprint("feed_var_list:", feed_var_list) # tmp add this code to pass python35 gcc8 CI # Fixme(gongweibao, wangxi), need fix fleet api program order if feed_var_list[0].name == 'label': feed_var_list = feed_var_list[::-1] feeder = fluid.DataFeeder(feed_var_list, place) reader_generator = train_reader() def get_data(): origin_batch = next(reader_generator) if args.update_method != "local" and args.use_reader_alloc: new_batch = [] for offset, item in enumerate(origin_batch): if offset % 2 == args.trainer_id: new_batch.append(item) return new_batch else: return origin_batch print_to_err(type(self).__name__, "begin to train on trainer") out_losses = [] for i in six.moves.xrange(RUN_STEP): loss, = exe.run(dist_prog, fetch_list=[avg_cost.name], feed=feeder.feed(get_data())) out_losses.append(loss[0]) print_to_err(type(self).__name__, "run step %d finished" % i) print_to_err(type(self).__name__, "trainer run finished") sys.stdout.buffer.write(pickle.dumps(out_losses)) if args.save_model: model_save_dir = "/tmp" if fleet.worker_index() == 0: model_save_dir_fluid = os.path.join(model_save_dir, "fluid_persistables") model_save_dir_fleet = os.path.join(model_save_dir, "fleet_persistables") infer_save_dir_fluid = os.path.join(model_save_dir, "fluid_infer") infer_save_dir_fleet = os.path.join(model_save_dir, "fleet_infer") else: model_save_dir_fluid = os.path.join(model_save_dir, "fluid_persistables_2") model_save_dir_fleet = os.path.join(model_save_dir, "fleet_persistables_2") infer_save_dir_fluid = os.path.join(model_save_dir, "fluid_infer_2") infer_save_dir_fleet = os.path.join(model_save_dir, "fleet_infer_2") fluid.io.save_persistables(exe, model_save_dir_fluid, fleet._origin_program) fleet.save_persistables(executor=exe, dirname=model_save_dir_fleet) feeded_var_names = [var.name for var in feed_var_list] fluid.io.save_inference_model(infer_save_dir_fluid, feeded_var_names, [avg_cost], exe, fleet._origin_program) fleet.save_inference_model(exe, infer_save_dir_fleet, feeded_var_names, [avg_cost]) def run_trainer(self, args): self.lr = args.lr if args.nccl2_reduce_layer_local_run: test_program, avg_cost, train_reader, test_reader, batch_acc, predict = \ self.get_model(batch_size=args.batch_size, single_device=True) elif args.use_dgc: test_program, avg_cost, train_reader, test_reader, batch_acc, predict = \ self.get_model(batch_size=args.batch_size, use_dgc=args.use_dgc) else: test_program, avg_cost, train_reader, test_reader, batch_acc, predict = \ self.get_model(batch_size=args.batch_size) if args.update_method == "pserver": print_to_err( type(self).__name__, "begin to run transpile on trainer with pserver mode") t = self.get_transpiler( trainer_id=args.trainer_id, main_program=fluid.default_main_program(), pserver_endpoints=args.endpoints, trainers=args.trainers, sync_mode=args.sync_mode, dc_asgd=args.dc_asgd, hogwild_mode=args.hogwild) trainer_prog = t.get_trainer_program() print_to_err( type(self).__name__, "get trainer program done with pserver mode.") elif args.update_method == "nccl2" or args.update_method == "nccl2_reduce_layer": # transpile for nccl2 config = fluid.DistributeTranspilerConfig() config.mode = "nccl2" config.nccl_comm_num = args.nccl_comm_num if args.use_hallreduce: config.use_hierarchical_allreduce = True config.hierarchical_allreduce_inter_nranks = args.hallreduce_inter_nranks print_to_err( type(self).__name__, "begin to run transpile on trainer with nccl2 mode") nccl2_t = fluid.DistributeTranspiler(config=config) nccl2_t.transpile( args.trainer_id, program=fluid.default_main_program(), startup_program=fluid.default_startup_program(), trainers=args.endpoints, current_endpoint=args.current_endpoint) print_to_err( type(self).__name__, "get trainer program done. with nccl2 mode") trainer_prog = fluid.default_main_program() else: print_to_err( type(self).__name__, "do nothing about main program, just use it") trainer_prog = fluid.default_main_program() print_to_err(type(self).__name__, "use main program done.") # FIXME(gongwb):wait pserver initialization. time.sleep(1) if args.use_cuda: device_id = int(os.getenv("FLAGS_selected_gpus", "0")) place = fluid.CUDAPlace(device_id) else: place = fluid.CPUPlace() exe = fluid.Executor(place) exe.run(fluid.default_startup_program()) print_to_err(type(self).__name__, "run worker startup program done.") exec_strategy = fluid.ExecutionStrategy() exec_strategy.num_threads = 1 build_stra = fluid.BuildStrategy() # FIXME force disable enable_inplace and memory_optimize build_stra.enable_inplace = False build_stra.memory_optimize = False if args.fuse_all_reduce is not None: sys.stderr.write('fuse_all_reduce={}'.format(args.fuse_all_reduce)) build_stra.fuse_all_reduce_ops = args.fuse_all_reduce if args.hogwild: build_stra.async_mode = True if args.enable_backward_deps: build_stra.enable_backward_optimizer_op_deps = True if args.use_reduce: build_stra.reduce_strategy = fluid.BuildStrategy.ReduceStrategy.Reduce else: build_stra.reduce_strategy = fluid.BuildStrategy.ReduceStrategy.AllReduce pass_builder = None if args.batch_merge_repeat > 1: pass_builder = build_stra._finalize_strategy_and_create_passes() mypass = pass_builder.insert_pass(0, "multi_batch_merge_pass") mypass.set("num_repeats", args.batch_merge_repeat) if args.update_method == "nccl2" or args.update_method == "nccl2_reduce_layer": build_stra.num_trainers = len(args.endpoints.split(",")) build_stra.trainer_id = args.trainer_id else: # case args.update_method == "nccl2_reduce_layer": build_stra.num_trainers = 1 build_stra.trainer_id = 0 print_to_err(type(self).__name__, "begin to compile with data parallel") binary = compiler.CompiledProgram(trainer_prog).with_data_parallel( loss_name=avg_cost.name, build_strategy=build_stra, exec_strategy=exec_strategy) print_to_err(type(self).__name__, "program compiled with data parallel") feed_var_list = [ var for var in trainer_prog.global_block().vars.values() if var.is_data ] feeder = fluid.DataFeeder(feed_var_list, place) reader_generator = train_reader() def get_data(): origin_batch = next(reader_generator) if args.update_method != "local" and args.use_reader_alloc: new_batch = [] for offset, item in enumerate(origin_batch): if offset % 2 == args.trainer_id: new_batch.append(item) return new_batch else: return origin_batch lr_scheduler = self.get_lr_scheduler(trainer_prog) print_to_err(type(self).__name__, "begin to train on trainer") out_losses = [] for i in six.moves.xrange(RUN_STEP): loss, = exe.run(binary, fetch_list=[avg_cost.name], feed=feeder.feed(get_data())) out_losses.append(loss[0]) print_to_err(type(self).__name__, "run step %d finished" % i) if lr_scheduler is not None: lr_scheduler.step() print_to_err(type(self).__name__, "trainer run finished") print_to_out(out_losses) class TestParallelDyGraphRunnerBase(object): def get_model(self): raise NotImplementedError( "get_model should be implemented by child classes.") def run_one_loop(self, model, opt, data): raise NotImplementedError( "train_one_loop should be implemented by the child classes.") def _get_data(self, batch, args): if paddle.distributed.get_world_size( ) == 1 and args.update_method == 'gloo': # Gloo single mode return batch elif args.update_method != "local": new_batch = [] # NOTE(@xiongkun03) args.diff_batch means batch length is different: # such as : batch = [2,3,4,5], then the first rank will get [2] and # the second rank will get [3,4,5]. # this function is for test sparse_embedding_differ_length if hasattr(args, "diff_batch") and args.diff_batch: assert len( batch) > 2, "in differ_batch mode, len(batch) must > 2." if paddle.distributed.get_rank() == 0: new_batch.append(batch[0]) elif paddle.distributed.get_rank() == 1: new_batch.extend([_ for _ in batch[1:]]) else: raise NotImplementedError( "Current TestParallelDyGraphRunnerBase don't support world_size > 2" ) return new_batch else: for offset, item in enumerate(batch): if offset % 2 == args.trainer_id: new_batch.append(item) return new_batch else: return batch def run_trainer(self, args): seed = 90 if args.update_method == 'gloo': place = fluid.CPUPlace() elif fluid.core.is_compiled_with_cuda(): device_id = int(os.getenv("FLAGS_selected_gpus", "0")) place = fluid.CUDAPlace(device_id) elif fluid.core.is_compiled_with_xpu(): device_id = int(os.getenv("FLAGS_selected_xpus", "0")) place = fluid.XPUPlace(device_id) elif fluid.core.is_compiled_with_npu(): device_id = int(os.getenv("FLAGS_selected_npus", "0")) place = fluid.NPUPlace(device_id) else: assert ("Only support CUDAPlace or XPUPlace or CPU(Gloo) for now.") with fluid.dygraph.guard(place): fluid.default_startup_program().random_seed = seed fluid.default_main_program().random_seed = seed np.random.seed(seed) import random random.seed(seed) model, train_reader, opt = self.get_model() nranks = len(args.endpoints.split(",")) if args.endpoints else 1 #if args.update_method == "nccl2": if args.update_method == "nccl2" or args.update_method == "bkcl" or args.update_method == "hccl": strategy = dygraph.parallel.ParallelStrategy() strategy.nranks = nranks strategy.local_rank = args.trainer_id strategy.trainer_endpoints = args.endpoints.split(",") strategy.current_endpoint = args.current_endpoint print_to_err( type(self).__name__, "begin to prepare context in dygraph with nccl2") dygraph.parallel.prepare_context(strategy) if not args.find_unused_parameters: model = dygraph.parallel.DataParallel( model, strategy, find_unused_parameters=False) else: model = dygraph.parallel.DataParallel( model, strategy, find_unused_parameters=True) print_to_err(type(self).__name__, "model built in dygraph") elif args.update_method == "gloo": paddle.distributed.init_parallel_env() if not args.find_unused_parameters: model = dygraph.parallel.DataParallel( model, find_unused_parameters=False) else: model = dygraph.parallel.DataParallel( model, find_unused_parameters=True) out_losses = [] print_to_err(type(self).__name__, "begin to run dygraph training") for step_id, data in enumerate(train_reader()): data = self._get_data(data, args) if step_id == RUN_STEP: break loss = self.run_one_loop(model, opt, data) if step_id % 10 == 0: print_to_err( type(self).__name__, "loss at step %d: %f" % (step_id, loss.numpy())) out_losses.append(loss.numpy()) loss.backward() opt.minimize(loss) if not args.accumulate_gradient: model.clear_gradients() print_to_out(out_losses) def run_trainer_with_spawn(self, args): # 1. enable dygraph paddle.disable_static() # 2. init seed seed = 90 paddle.static.default_startup_program().random_seed = seed paddle.static.default_main_program().random_seed = seed np.random.seed(seed) random.seed(seed) # get trainer id args.trainer_id = paddle.distributed.get_rank() # 3. init parallel env if args.update_method in ["nccl2", "gloo"]: paddle.distributed.init_parallel_env() # 4. train model model, train_reader, opt = self.get_model() if args.update_method in ["nccl2", "gloo"]: if args.find_unused_parameters: model = paddle.DataParallel(model, find_unused_parameters=True) else: model = paddle.DataParallel(model, find_unused_parameters=False) out_losses = [] for step_id, data in enumerate(train_reader()): data = self._get_data(data, args) if step_id == RUN_STEP: break loss = self.run_one_loop(model, opt, data) out_losses.append(loss.numpy()) loss.backward() opt.minimize(loss) model.clear_gradients() return out_losses def run_use_fleet_api_trainer(self, args): import paddle.distributed.fleet as fleet import paddle.distributed.fleet.base.role_maker as role_maker # 1. enable dygraph paddle.disable_static() # 2. init seed seed = 90 paddle.static.default_startup_program().random_seed = seed paddle.static.default_main_program().random_seed = seed np.random.seed(seed) random.seed(seed) # get trainer id args.trainer_id = paddle.distributed.get_rank() # set strategy strategy = fleet.DistributedStrategy() if args.find_unused_parameters: strategy.find_unused_parameters = True # 3. init parallel env if args.update_method == "nccl2" or "bkcl" or "hccl": fleet.init(is_collective=True, strategy=strategy) # 4. train model model, train_reader, opt = self.get_model() if args.update_method == "nccl2" or "bkcl" or "hccl": opt = fleet.distributed_optimizer(opt) model = fleet.distributed_model(model) out_losses = [] for step_id, data in enumerate(train_reader()): data = self._get_data(data, args) if step_id == RUN_STEP: break loss = self.run_one_loop(model, opt, data) out_losses.append(loss.numpy()) loss.backward() opt.step() if not args.accumulate_gradient: opt.clear_grad() print_to_out(out_losses) def runtime_main(test_class): parser = argparse.ArgumentParser(description='Run dist test.') parser.add_argument( '--role', type=str, required=True, choices=['pserver', 'trainer']) parser.add_argument('--endpoints', type=str, required=False, default="") parser.add_argument( '--update_method', type=str, default="local", choices=[ "pserver", "nccl2", "bkcl", "local", "nccl2_reduce_layer", "gloo", "hccl" ]) parser.add_argument('--trainer_id', type=int, required=False, default=0) parser.add_argument('--trainers', type=int, required=False, default=1) parser.add_argument('--nccl_comm_num', type=int, required=False, default=1) parser.add_argument('--enable_backward_deps', action='store_true') parser.add_argument('--use_hallreduce', action='store_true') parser.add_argument('--use_pipeline', action='store_true') parser.add_argument('--use_fleet_api', action='store_true') parser.add_argument('--use_fleet_api_20', action='store_true') parser.add_argument('--use_local_sgd', action='store_true') parser.add_argument('--diff_batch', action='store_true') parser.add_argument('--ut4grad_allreduce', action='store_true') parser.add_argument( '--hallreduce_inter_nranks', type=int, required=False, default=2) parser.add_argument( '--current_endpoint', type=str, required=False, default="") parser.add_argument('--sync_mode', action='store_true') parser.add_argument('--use_cuda', action='store_true') parser.add_argument('--use_cpu', action='store_true') parser.add_argument('--use_xpu', action='store_true') parser.add_argument('--use_dgc', action='store_true') parser.add_argument('--use_npu', action='store_true') parser.add_argument('--accumulate_gradient', action='store_true') parser.add_argument('--find_unused_parameters', action='store_true') parser.add_argument('--use_reduce', action='store_true') parser.add_argument('--dc_asgd', action='store_true') parser.add_argument('--hogwild', action='store_true') parser.add_argument('--save_model', action='store_true') parser.add_argument( '--use_reader_alloc', action='store_true', required=False) parser.add_argument('--batch_size', required=False, type=int, default=2) parser.add_argument('--lr', required=False, type=float, default=0.001) parser.add_argument( '--batch_merge_repeat', required=False, type=int, default=1) parser.add_argument( '--nccl2_reduce_layer_local_run', required=False, type=bool, default=False) parser.add_argument('--sync_batch_norm', action='store_true') parser.add_argument( '--fuse_all_reduce', required=False, type=ast.literal_eval, default=None) args = parser.parse_args() if args.update_method == 'gloo': paddle.set_device("cpu") model = test_class() if args.role == "pserver" and args.update_method == "pserver": model.run_pserver(args) elif args.use_fleet_api: model.run_use_fleet_api_trainer(args) elif args.use_fleet_api_20: model.run_use_fleet_api_20_trainer(args) elif args.use_pipeline: model.run_pipeline_trainer(args) else: model.run_trainer(args) import paddle.compat as cpt import socket from contextlib import closing class TestDistBase(unittest.TestCase): def _setup_config(self): raise NotImplementedError("tests should have _setup_config implemented") def _after_setup_config(self): if self._enforce_place == "CPU": self.__use_cuda = False self.__use_xpu = False self._use_dgc = False self.__use_npu = False elif self._enforce_place == "GPU": self.__use_cuda = True self.__use_xpu = False self.__use_npu = False elif self._enforce_place == "XPU": self.__use_cuda = False self.__use_xpu = True self._use_dgc = False self.__use_npu = False elif self._enforce_place == "NPU": self.__use_cuda = False self.__use_xpu = False self._use_dgc = False self.__use_npu = True else: if fluid.core.is_compiled_with_cuda(): self.__use_cuda = True else: self.__use_cuda = False self._use_dgc = False if self._use_reduce: assert not self._use_dgc def setUp(self): self._trainers = 2 self._pservers = 2 self._port_set = set() self._python_interp = sys.executable self._sync_mode = True self._hogwild_mode = False self._enforce_place = None self._use_reduce = False self._dc_asgd = False # must use with async mode self._use_reader_alloc = True self._nccl2_mode = False self._bkcl_mode = False self._gloo_mode = False # now, support gloo backend self._hccl_mode = False self._pipeline_mode = False self._mp_mode = False self._diff_batch = False # FIXME(typhoonzero): I added this stupid argument to enable # testing allreduce layers, which users can call layers.allreduce # to accumulate tensors at anywhere. Find a better way to do this # test, reduce check this argument everywhere. self._nccl2_reduce_layer = False self._lr = 0.001 self._use_dgc = False self._dygraph = False self._nccl_comm_num = 1 self._enable_backward_deps = False self._use_fleet_api = False self._use_fleet_api_20 = False self._use_local_sgd = False self._ut4grad_allreduce = False self._use_hallreduce = False self._save_model = False self._fuse_all_reduce = None self._accumulate_gradient = False self._find_unused_parameters = False self._setup_config() global DIST_UT_PORT if DIST_UT_PORT == 0 and os.getenv("PADDLE_DIST_UT_PORT"): DIST_UT_PORT = int(os.getenv("PADDLE_DIST_UT_PORT")) if DIST_UT_PORT == 0: self._ps_endpoints = "127.0.0.1:%s,127.0.0.1:%s" % ( self._find_free_port(), self._find_free_port()) else: print("set begin_port:", DIST_UT_PORT) self._ps_endpoints = "127.0.0.1:%s,127.0.0.1:%s" % ( DIST_UT_PORT, DIST_UT_PORT + 1) DIST_UT_PORT += 2 self._after_setup_config() def _find_free_port(self): def __free_port(): with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as s: s.bind(('', 0)) print_to_err( type(self).__name__, "socket name: %s" % s.getsockname()[1]) return s.getsockname()[1] while True: port = __free_port() if port not in self._port_set: self._port_set.add(port) return port def start_pserver(self, model_file, check_error_log, required_envs, log_name=""): ps0_ep, ps1_ep = self._ps_endpoints.split(",") ps_cmd = "%s" if os.getenv('WITH_COVERAGE', 'OFF') == 'ON': required_envs['COVERAGE_FILE'] = os.getenv('COVERAGE_FILE', '') ps_cmd += " -m coverage run --branch -p" ps_cmd += " %s --role pserver --endpoints %s --trainer_id 0 --current_endpoint %s --trainers %d --update_method pserver" ps0_cmd = ps_cmd % \ (self._python_interp, model_file, self._ps_endpoints, ps0_ep, self._trainers) ps1_cmd = ps_cmd % \ (self._python_interp, model_file, self._ps_endpoints, ps1_ep, self._trainers) if self._sync_mode: ps0_cmd += " --sync_mode" ps1_cmd += " --sync_mode" print(ps0_cmd) print(ps1_cmd) ps0_pipe = open(log_name + "_ps0_err.log", "wb") ps1_pipe = open(log_name + "_ps1_err.log", "wb") print_to_err(type(self).__name__, "going to start pserver process 0") ps0_proc = subprocess.Popen( ps0_cmd.strip().split(" "), stdout=subprocess.PIPE, stderr=ps0_pipe, env=required_envs) print_to_err(type(self).__name__, "going to start pserver process 1") ps1_proc = subprocess.Popen( ps1_cmd.strip().split(" "), stdout=subprocess.PIPE, stderr=ps1_pipe, env=required_envs) return ps0_proc, ps1_proc, ps0_pipe, ps1_pipe def _run_local(self, model, envs, check_error_log=False, batch_size=DEFAULT_BATCH_SIZE, batch_merge_repeat=1, log_name="", devices="1"): cmd = self._python_interp if os.getenv('WITH_COVERAGE', 'OFF') == 'ON': envs['COVERAGE_FILE'] = os.getenv('COVERAGE_FILE', '') cmd += " -m coverage run --branch -p" cmd += " %s --role trainer --update_method local --lr %f" % (model, self._lr) if batch_size != DEFAULT_BATCH_SIZE: cmd += " --batch_size %d" % batch_size if batch_merge_repeat > 1: cmd += " --batch_merge_repeat %d" % batch_merge_repeat if self._nccl2_reduce_layer: cmd += " --nccl2_reduce_layer_local_run 1" if self.__use_cuda: cmd += " --use_cuda" env_local = { "CUDA_VISIBLE_DEVICES": devices, "PADDLE_TRAINERS_NUM": "1", "PADDLE_TRAINER_ID": "0" } elif self.__use_xpu: cmd += " --use_xpu" env_local = { "FLAGS_selected_xpus": devices, "PADDLE_TRAINERS_NUM": "1", "PADDLE_TRAINER_ID": "0" } elif self.__use_npu: cmd += " --use_npu" env_local = { "FLAGS_selected_npus": devices, "PADDLE_TRAINERS_NUM": "1", "PADDLE_TRAINER_ID": "0" } else: env_local = {'CPU_NUM': '1'} # not use dgc in single card if len(devices) > 1 and self._use_dgc: cmd += " --use_dgc" if self._accumulate_gradient: cmd += " --accumulate_gradient" if self._find_unused_parameters: cmd += " --find_unused_parameters" env_local.update(envs) print("local_cmd: {}, env: {}".format(cmd, env_local)) if check_error_log: err_log = open(log_name + "_local.log", "wb") local_proc = subprocess.Popen( cmd.split(" "), stdout=subprocess.PIPE, stderr=err_log, env=env_local) else: local_proc = subprocess.Popen( cmd.split(" "), stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env_local) local_out, local_err = local_proc.communicate() if check_error_log: err_log.close() sys.stderr.write('local_stderr: %s\n' % local_err) sys.stderr.write('local_stdout: %s\n' % pickle.loads(local_out)) return pickle.loads(local_out) def _run_local_gloo(self, model, envs, check_error_log=False, batch_size=DEFAULT_BATCH_SIZE, batch_merge_repeat=1, log_name="", devices="0"): saved_endpoints = self._ps_endpoints self._ps_endpoints = self._ps_endpoints.split(',')[0] result = self._run_cluster_gloo(model, envs, 'gloo', check_error_log, log_name) self._ps_endpoints = saved_endpoints return result def _run_cluster(self, model, envs, check_error_log, log_name): # Run dist train to compare with local results ps0, ps1, ps0_pipe, ps1_pipe = self.start_pserver( model, check_error_log, envs, log_name=log_name) ps0_ep, ps1_ep = self._ps_endpoints.split(",") tr_cmd = "%s" if os.getenv('WITH_COVERAGE', 'OFF') == 'ON': envs['COVERAGE_FILE'] = os.getenv('COVERAGE_FILE', '') tr_cmd += " -m coverage run --branch -p" tr_cmd += " %s --role trainer --endpoints %s --trainer_id %d --current_endpoint %s --trainers %d --update_method pserver --lr %f" tr0_cmd = tr_cmd % \ (self._python_interp, model, self._ps_endpoints, 0, ps0_ep, self._trainers, self._lr) tr1_cmd = tr_cmd % \ (self._python_interp, model, self._ps_endpoints, 1, ps1_ep, self._trainers, self._lr) if self._sync_mode: tr0_cmd += " --sync_mode" tr1_cmd += " --sync_mode" if self._hogwild_mode: tr0_cmd += " --hogwild" tr1_cmd += " --hogwild" if self._use_reduce: tr0_cmd += " --use_reduce" tr1_cmd += " --use_reduce" if self._use_reader_alloc: tr0_cmd += " --use_reader_alloc" tr1_cmd += " --use_reader_alloc" if self.__use_cuda: tr0_cmd += " --use_cuda" tr1_cmd += " --use_cuda" env0 = {"CUDA_VISIBLE_DEVICES": "0"} env1 = {"CUDA_VISIBLE_DEVICES": "1"} else: env0 = {'CPU_NUM': '1'} env1 = {'CPU_NUM': '1'} env0.update(envs) env1.update(envs) print("tr0_cmd: {}, env: {}".format(tr0_cmd, env0)) print("tr1_cmd: {}, env: {}".format(tr1_cmd, env1)) tr0_pipe = open(log_name + "_tr0_err.log", "wb") tr1_pipe = open(log_name + "_tr1_err.log", "wb") print_to_err(type(self).__name__, "going to start trainer process 0") tr0_proc = subprocess.Popen( tr0_cmd.strip().split(" "), stdout=subprocess.PIPE, stderr=tr0_pipe, env=env0) print_to_err(type(self).__name__, "going to start trainer process 1") tr1_proc = subprocess.Popen( tr1_cmd.strip().split(" "), stdout=subprocess.PIPE, stderr=tr1_pipe, env=env1) # Wait until trainer process terminate while True: stat0 = tr0_proc.poll() time.sleep(0.1) if stat0 is not None: break while True: stat1 = tr1_proc.poll() time.sleep(0.1) if stat1 is not None: break tr0_out, tr0_err = tr0_proc.communicate() tr1_out, tr1_err = tr1_proc.communicate() # close trainer file tr0_pipe.close() tr1_pipe.close() ps0_pipe.close() ps1_pipe.close() ps0.terminate() ps1.terminate() return pickle.loads(tr0_out), pickle.loads(tr1_out) def _get_gloo_trainer_cmd(self, model, ep, update_method, trainer_id, trainer_num): env = {} tr_cmd = "%s -u" if os.getenv('WITH_COVERAGE', 'OFF') == 'ON': tr_cmd += " -m coverage run --branch -p" tr_cmd += " %s --role trainer --endpoints %s --trainer_id %d --current_endpoint %s --update_method %s --lr %f" tr_cmd = tr_cmd % \ (self._python_interp, model, self._ps_endpoints, trainer_id, ep, update_method, self._lr) if self._use_reduce: tr_cmd += " --use_reduce" if self._use_reader_alloc: tr_cmd += " --use_reader_alloc" #assert self._use_reduce == False, "gloo not support _use_reduce" #assert self._use_reader_alloc == False, "gloo not support _use_reduce" if self._save_model: tr_cmd += " --save_model" if self._diff_batch: tr_cmd += " --diff_batch" self.__use_cuda = False self.__use_xpu = False assert self.__use_cuda == False, "gloo not support use cuda" assert self.__use_xpu == False, "gloo not support use xpu" tr_cmd += " --use_cpu" env.update({ "PADDLE_TRAINERS_NUM": "{}".format(trainer_num), "PADDLE_TRAINER_ID": "{}".format(trainer_id), "PADDLE_TRAINER_ENDPOINTS": self._ps_endpoints, "PADDLE_CURRENT_ENDPOINT": ep, "PADDLE_CURRENT_ENDPOINT": ep, "PADDLE_DISTRI_BACKEND": "gloo", "GLOG_v": "2", }) assert self._use_dgc == False, "gloo not support use dgc" if self._accumulate_gradient: tr_cmd += " --accumulate_gradient" if self._find_unused_parameters: tr_cmd += " --find_unused_parameters" assert self._pipeline_mode == False, "gloo not support use pipeline" if self._enable_backward_deps: # build strategy, save it tr_cmd += " --enable_backward_deps" if self._fuse_all_reduce is not None: tr_cmd += " --fuse_all_reduce {}".format(self._fuse_all_reduce) assert self._use_fleet_api == False, "gloo not support use fleet api" assert self._use_fleet_api_20 == False, "gloo not support use fleet api" return tr_cmd, env def _get_nccl2_trainer_cmd(self, model, ep, update_method, trainer_id, trainer_num): env = {} tr_cmd = "%s -u" if os.getenv('WITH_COVERAGE', 'OFF') == 'ON': tr_cmd += " -m coverage run --branch -p" tr_cmd += " %s --role trainer --endpoints %s --trainer_id %d --current_endpoint %s --update_method %s --lr %f" tr_cmd = tr_cmd % \ (self._python_interp, model, self._ps_endpoints, trainer_id, ep, update_method, self._lr) if self._use_reduce: tr_cmd += " --use_reduce" if self._use_reader_alloc: tr_cmd += " --use_reader_alloc" if self._save_model: tr_cmd += " --save_model" if self.__use_cuda: tr_cmd += " --use_cuda" env.update({ "FLAGS_selected_gpus": "{}".format(0), "CUDA_VISIBLE_DEVICES": "{}".format(trainer_id), "PADDLE_TRAINERS_NUM": "{}".format(trainer_num), "PADDLE_TRAINER_ID": "{}".format(trainer_id), "PADDLE_TRAINER_ENDPOINTS": self._ps_endpoints, "PADDLE_CURRENT_ENDPOINT": ep, }) # TODO(liuyuhui):XPU_VISIBLE_DEVICES is not working right now, # will update it after Badiu Kunlun partners' support. elif self.__use_xpu: tr_cmd += " --use_xpu" env.update({ "FLAGS_selected_xpus": "{}".format(trainer_id), #"XPU_VISIBLE_DEVICES": "{}".format(trainer_id + 1), "PADDLE_TRAINERS_NUM": "{}".format(trainer_num), "PADDLE_TRAINER_ID": "{}".format(trainer_id), "PADDLE_TRAINER_ENDPOINTS": self._ps_endpoints, "PADDLE_CURRENT_ENDPOINT": ep, "GLOG_v": "2", }) elif self.__use_npu: tr_cmd += " --use_npu" env.update({ "FLAGS_selected_npus": "{}".format(trainer_id), "PADDLE_TRAINERS_NUM": "{}".format(trainer_num), "PADDLE_TRAINER_ID": "{}".format(trainer_id), "PADDLE_TRAINER_ENDPOINTS": self._ps_endpoints, "PADDLE_CURRENT_ENDPOINT": ep, "GLOG_v": "2", }) else: env.update({'CPU_NUM': '1'}) if self._use_dgc: tr_cmd += " --use_dgc" if self._accumulate_gradient: tr_cmd += " --accumulate_gradient" if self._find_unused_parameters: tr_cmd += " --find_unused_parameters" if self._pipeline_mode: tr_cmd += " --use_pipeline" if self._mp_mode: env = {"FLAGS_selected_gpus": "{}".format(trainer_id)} if self._nccl_comm_num > 1: tr_cmd += " --nccl_comm_num {}".format(self._nccl_comm_num) if self._use_hallreduce: tr_cmd += " --use_hallreduce --hallreduce_inter_nranks 2" if self._enable_backward_deps: tr_cmd += " --enable_backward_deps" if self._fuse_all_reduce is not None: tr_cmd += " --fuse_all_reduce {}".format(self._fuse_all_reduce) if self._use_fleet_api: tr_cmd += " --use_fleet_api_20" if self._use_fleet_api_20 else " --use_fleet_api" if self._use_local_sgd: tr_cmd += " --use_local_sgd" if self._ut4grad_allreduce: tr_cmd += " --ut4grad_allreduce" if hasattr(self, '_sync_batch_norm') and self._sync_batch_norm: tr_cmd += " --sync_batch_norm" if os.getenv('WITH_COVERAGE', 'OFF') == 'ON': env['COVERAGE_FILE'] = os.getenv('COVERAGE_FILE', '') return tr_cmd, env def _run_cluster_gloo(self, model, envs, update_method, check_error_log, log_name): assert update_method == "gloo", "_run_cluster_gloo must have update_method: gloo, but get %s" % update_method assert not self._use_hallreduce, "_run_cluster_gloo must have _use_hallreduce = false" worker_endpoints = self._ps_endpoints.split(",") trainer_num = len(worker_endpoints) procs = [] pipes = [] for i in range(0, trainer_num): tr_cmd, tr_env = self._get_gloo_trainer_cmd( model, worker_endpoints[i], update_method, i, trainer_num) tr_env.update(envs) tr_env["GLOG_vmodule"] = 'gloo_context=4' tr_env["GLOG_v"] = '3' print("use_hallreduce:{} tr_cmd:{}, env: {}".format( self._use_hallreduce, tr_cmd, tr_env)) tr_pipe = open(log_name + "_tr{}_err.log".format(i), "wb") print_to_err( type(self).__name__, "going to start process {} with nccl2".format(i)) tr_proc = subprocess.Popen( tr_cmd.strip().split(" "), stdout=subprocess.PIPE, stderr=tr_pipe, env=tr_env) procs.append(tr_proc) pipes.append(tr_pipe) outs = [] for i in range(0, trainer_num): tr_out, tr_err = procs[i].communicate() outs.append(tr_out) pipes[i].close() sys.stderr.write('trainer {} stderr: {}\n'.format(i, tr_err)) if trainer_num == 1: if check_error_log: print("outs[0]:", outs[0]) return pickle.loads(outs[0]) else: if check_error_log: print("outs[0]:", outs[0]) print("outs[1]:", outs[1]) return pickle.loads(outs[0]), pickle.loads(outs[1]) def _run_cluster_nccl2(self, model, envs, update_method, check_error_log, log_name): if self._use_hallreduce: self._ps_endpoints = "" global DIST_UT_PORT if DIST_UT_PORT == 0: # NOTE(wangxi). hallreduce test must use 4cards after nccl>=2.7 for i in range(0, 4): self._ps_endpoints += "127.0.0.1:%s," % ( self._find_free_port()) else: for i in range(0, 4): self._ps_endpoints += "127.0.0.1:%s," % (DIST_UT_PORT + i) DIST_UT_PORT += 4 self._ps_endpoints = self._ps_endpoints[:-1] # NOTE: we reuse ps_endpoints as nccl2 worker endpoints worker_endpoints = self._ps_endpoints.split(",") trainer_num = len(worker_endpoints) procs = [] pipes = [] for i in range(0, trainer_num): tr_cmd, tr_env = self._get_nccl2_trainer_cmd( model, worker_endpoints[i], update_method, i, trainer_num) tr_env.update(envs) print("use_hallreduce:{} tr_cmd:{}, env: {}".format( self._use_hallreduce, tr_cmd, tr_env)) tr_pipe = open(log_name + "_tr{}_err.log".format(i), "wb") print_to_err( type(self).__name__, "going to start process {} with nccl2".format(i)) tr_proc = subprocess.Popen( tr_cmd.strip().split(" "), stdout=subprocess.PIPE, stderr=tr_pipe, env=tr_env) procs.append(tr_proc) pipes.append(tr_pipe) outs = [] for i in range(0, trainer_num): tr_out, tr_err = procs[i].communicate() outs.append(tr_out) pipes[i].close() sys.stderr.write('trainer {} stderr: {}\n'.format(i, tr_err)) if check_error_log: print("outs[0]:", outs[0]) print("outs[1]:", outs[1]) return pickle.loads(outs[0]), pickle.loads(outs[1]) def _run_pipeline(self, model, envs, check_error_log, log_name): # NOTE: we reuse ps_endpoints as nccl2 worker endpoints worker_endpoints = self._ps_endpoints.split(",") update_method = "nccl2" trainer_num = len(worker_endpoints) procs = [] pipes = [] for i in range(0, trainer_num): tr_cmd, tr_env = self._get_nccl2_trainer_cmd( model, worker_endpoints[i], update_method, i, trainer_num) tr_env.update(envs) tr_env['CUDA_VISIBLE_DEVICES'] = "0,1" tr_env['NCCL_SHM_DISABLE'] = '1' tr_env['FLAGS_selected_gpus'] = str(i) tr_env['FLAGS_cudnn_deterministic'] = '0' print("tr_cmd:{}, env: {}".format(tr_cmd, tr_env)) tr_pipe = open("/tmp/" + "tr{}_err.log".format(i), "wb") print_to_err( type(self).__name__, "going to start process {} with nccl2".format(i)) tr_proc = subprocess.Popen( tr_cmd.strip().split(" "), stdout=subprocess.PIPE, stderr=tr_pipe, env=tr_env) procs.append(tr_proc) pipes.append(tr_pipe) outs = [] for i in range(0, trainer_num): tr_out, tr_err = procs[i].communicate() outs.append(tr_out) pipes[i].close() sys.stderr.write('trainer {} stderr: {}\n'.format(i, tr_err)) if check_error_log: print("outs[0]:", outs[0]) print("outs[1]:", outs[1]) return pickle.loads(outs[0]), pickle.loads(outs[1]) def _get_required_envs(self, check_error_log=False, need_envs={}): # TODO(typhoonzero): should auto adapt GPU count on the machine. required_envs = { "PATH": os.getenv("PATH", ""), "PYTHONPATH": os.getenv("PYTHONPATH", ""), "LD_LIBRARY_PATH": os.getenv("LD_LIBRARY_PATH", ""), "FLAGS_fraction_of_gpu_memory_to_use": "0.15", "FLAGS_rpc_deadline": "30000", # 5sec to fail fast "FLAGS_rpc_retry_bind_port": "50", "FLAGS_cudnn_deterministic": "1", "FLAGS_rpc_disable_reuse_port": "1", "http_proxy": "", "NCCL_P2P_DISABLE": "1", "NCCL_SHM_DISABLE": "1" } if check_error_log: required_envs["GLOG_vmodule"] = \ "fused_all_reduce_op_handle=10,all_reduce_op_handle=10,alloc_continuous_space_op=10,fuse_all_reduce_op_pass=10," \ "alloc_continuous_space_for_grad_pass=10,fast_threaded_ssa_graph_executor=10,executor=10,operator=10," \ "sparse_all_reduce_op_handle=10,gen_nccl_id_op=10,gen_nccl_id_op_help=10,nccl_helper=10,grpc_client=10," \ "grpc_server=10,request_handler_impl=10,section_worker=10" required_envs["GLOG_logtostderr"] = "1" required_envs.update(need_envs) return required_envs def check_with_place(self, model_file, delta=1e-3, check_error_log=False, need_envs={}, log_name=""): required_envs = self._get_required_envs(check_error_log, need_envs) if self._gloo_mode: local_losses \ = self._run_local_gloo(model_file, required_envs, check_error_log, log_name=log_name) else: local_losses \ = self._run_local(model_file, required_envs, check_error_log, log_name=log_name) if self._nccl2_mode: if self._nccl2_reduce_layer: tr0_losses, tr1_losses = self._run_cluster_nccl2( model_file, required_envs, update_method="nccl2_reduce_layer", check_error_log=check_error_log, log_name=log_name) else: tr0_losses, tr1_losses = self._run_cluster_nccl2( model_file, required_envs, update_method='nccl2', check_error_log=check_error_log, log_name=log_name) elif self._bkcl_mode: tr0_losses, tr1_losses = self._run_cluster_nccl2( model_file, required_envs, update_method='bkcl', check_error_log=check_error_log, log_name=log_name) elif self._gloo_mode: # gloo mode, cpu only parallel train @xiongkun03 tr0_losses, tr1_losses = self._run_cluster_gloo( model_file, required_envs, update_method='gloo', check_error_log=check_error_log, log_name=log_name) elif self._hccl_mode: tr0_losses, tr1_losses = self._run_cluster_nccl2( model_file, required_envs, update_method='hccl', check_error_log=check_error_log, log_name=log_name) elif self._pipeline_mode: tr0_losses, tr1_losses = self._run_pipeline( model_file, required_envs, check_error_log, log_name=log_name) else: tr0_losses, tr1_losses = self._run_cluster( model_file, required_envs, check_error_log, log_name=log_name) for step_id in range(RUN_STEP): local_loss = local_losses[step_id] tr0_loss = tr0_losses[step_id] tr1_loss = tr1_losses[step_id] if self._pipeline_mode: dist_loss = np.array([tr1_loss]) else: dist_loss = (np.array([tr0_loss]) + np.array([tr1_loss])) / 2 print("=======", local_loss, ":", dist_loss[0], "=======") self.assertAlmostEqual(local_loss, dist_loss[0], delta=delta) def check_with_place_multi_cards(self, model_file, delta=1e-3, check_error_log=False, need_envs={}, log_name=""): # need open p2p or shm otherwise multi cards mode will hang need_envs.update({"NCCL_P2P_DISABLE": "0", "NCCL_SHM_DISABLE": "0"}) required_envs = self._get_required_envs(check_error_log, need_envs) if self._use_dgc: multi_cards_losses = self._run_local( model_file, required_envs, check_error_log, log_name=log_name + "_dgc_2cards", devices="0,1") self._use_dgc = False base_losses = self._run_local( model_file, required_envs, check_error_log, log_name=log_name + "_base_2cards", devices="0,1") self._use_dgc = True for step_id in range(RUN_STEP): base_loss = base_losses[step_id] multi_cards_loss = multi_cards_losses[step_id] print("=======", base_loss, ":", multi_cards_loss, "=======") self.assertAlmostEqual(base_loss, multi_cards_loss, delta=delta)