# Copyright (c) 2022 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 from paddle import fluid import paddle.distributed.passes from .meta_optimizer_base import MetaOptimizerBase from paddle.fluid import core import subprocess import re import os import platform from paddle.distributed.ps.utils.public import * from paddle.distributed.passes import PassContext from ..base.private_helper_function import wait_server_ready from paddle.distributed.ps.utils.ps_factory import PsProgramBuilderFactory class ParameterServerOptimizer(MetaOptimizerBase): def __init__(self, optimizer): super(ParameterServerOptimizer, self).__init__(optimizer) self.inner_opt = optimizer # we do not allow meta optimizer to be inner optimizer currently self.meta_optimizers_white_list = [] self.pass_ctx = PassContext() def _set_basic_info(self, loss, role_maker, user_defined_optimizer, user_defined_strategy): super(ParameterServerOptimizer, self)._set_basic_info( loss, role_maker, user_defined_optimizer, user_defined_strategy) def _init_ps_pass_context(self, loss, startup_program): attrs = {} # trainer attrs["env"] = get_dist_env() attrs['loss'] = loss attrs['min_block_size'] = 81920 attrs['origin_main_program'] = loss.block.program attrs['origin_main_programs'] = [loss.block.program] attrs['origin_startup_program'] = startup_program attrs['origin_startup_programs'] = [startup_program] attrs['cloned_main'] = attrs['origin_main_program'].clone() attrs['cloned_startup'] = attrs['origin_startup_program'].clone() attrs['user_defined_strategy'] = self.user_defined_strategy attrs['valid_strategy'] = self.user_defined_strategy attrs['trainer'] = TrainerRuntimeConfig(self.user_defined_strategy) attrs['ps_mode'] = attrs['trainer'].mode logger.info("ps_mode: {}".format(attrs['ps_mode'])) attrs['role_maker'] = self.role_maker attrs[ 'is_heter_ps_mode'] = self.role_maker._is_heter_parameter_server_mode attrs['is_worker'] = self.role_maker._is_worker() attrs['is_server'] = self.role_maker._is_server() attrs['is_heter_worker'] = self.role_maker._is_heter_worker() logger.info("this process is heter? {}".format(attrs[ 'is_heter_worker'])) attrs['use_ps_gpu'] = self.user_defined_strategy.a_sync_configs[ "use_ps_gpu"] attrs['lr_decay_steps'] = self.user_defined_strategy.a_sync_configs[ "lr_decay_steps"] attrs['k_steps'] = self.user_defined_strategy.a_sync_configs["k_steps"] attrs['launch_barrier'] = self.user_defined_strategy.a_sync_configs[ "launch_barrier"] attrs['launch_barrier_flag'] = int( os.getenv("FLAGS_LAUNCH_BARRIER", "1")) build_var_distributed(attrs) # server attrs['_main_server'] = fluid.Program() attrs['_startup_server'] = fluid.Program() attrs['tensor_table'] = {} self.pass_ctx._attrs = attrs def _is_graph_out(self): return False def _can_apply(self): if self._attrs['role_maker']._is_collective or self._attrs[ 'k_steps'] < 0: return False return True def minimize_impl(self, loss, startup_program=None, parameter_list=None, no_grad_set=None): self.inner_opt.minimize(loss, startup_program, parameter_list, no_grad_set) if startup_program == None: startup_program = paddle.static.default_startup_program() self._init_ps_pass_context(loss, startup_program) ps_builder = PsProgramBuilderFactory()._create_ps_program_builder( self.pass_ctx) ps_builder._build_programs() return None, None def _can_apply_geo(self, program): def get_sys_free_mem(): plat = platform.system() if platform.system() == "Darwin": vm = subprocess.Popen( ['vm_stat'], stdout=subprocess.PIPE).communicate()[0] # Process vm_stat vmLines = vm.split('\n') sep = re.compile(r':[\s]+') vmStats = {} for row in range(1, len(vmLines) - 2): rowText = vmLines[row].strip() rowElements = sep.split(rowText) vmStats[(rowElements[0] )] = int(rowElements[1].strip(r'\.')) * 4096 return vmStats["Pages free"] elif platform.system() == "Linux": mems = {} with open('/proc/meminfo', 'rb') as f: for line in f: fields = line.split() mems[fields[0]] = int(fields[1]) * 1024 free = mems[b'MemFree:'] return free else: raise ValueError( "%s platform is unsupported is parameter server optimizer" % (platform.system())) if not isinstance(self.inner_opt, fluid.optimizer.SGDOptimizer): return False free = get_sys_free_mem() processed_var_names = set(["@EMPTY@"]) param_memory_size = 0 for varname in program.global_block().vars: var = program.global_block().vars[varname] if not var.persistable or var.desc.type( ) != core.VarDesc.VarType.LOD_TENSOR: continue set_var_lod_type(var) param_memory_size += get_var_mem_size(var) processed_var_names.add(varname) upper_mem_use = param_memory_size * 5.0 program_tmp_vars = dict() eval_batch_size = 1024 for op in program.global_block().ops: for var_name in op.output_arg_names: if var_name in processed_var_names: continue processed_var_names.add(var_name) var = program.global_block().vars[var_name] if var.desc.type() != core.VarDesc.VarType.LOD_TENSOR: continue data_count = 1 neg_dim_count = 0 for x in var.shape: if x < 0: if neg_dim_count >= 1: raise ValueError( "Var %s has more than one negative dim." % (var_name)) neg_dim_count += 1 data_count *= (-x) else: data_count *= x program_tmp_vars[var_name] = ( data_count, neg_dim_count, vars_metatools.dtype_to_size[var.dtype]) for varname in program_tmp_vars: data_count, neg_dim_count, type_size = program_tmp_vars[varname] if neg_dim_count == 1: data_count *= eval_batch_size var_memory = data_count * type_size upper_mem_use += var_memory if upper_mem_use < free: return True else: return False def _enable_strategy(self, dist_strategy, context): if dist_strategy.a_sync_configs["k_steps"] >= 0: return dist_strategy.a_sync = True is_geo = self._can_apply_geo(context["origin_main_program"]) dist_strategy.a_sync_configs["k_steps"] = 800 if is_geo else 0 def _disable_strategy(self, dist_strategy): dist_strategy.a_sync = False dist_strategy.a_sync_configs["k_steps"] = -1