remove chief

python/paddle/fluid/io.py

@@ -466,7 +466,6 @@ CHECKPOINT_SEPARATOR = "_"
 def save_checkpoint(executor,
                     checkpoint_dir,
                     trainer_id,
-                    is_chief=False,
                     trainer_args=None,
                     main_program=None,
                     max_num_checkpoints=3):
@@ -478,8 +477,7 @@ def save_checkpoint(executor,
 
     :param executor executor for save the value
     :param checkpoint_dir the checkpoint directory 
-    :param trainer_id currect trainer id
-    :param is_chief if the trainer id equals 0, the is_chief will be true
+    :param trainer_id currect trainer id, if id is equal to 0, the trainer is chief
     :param main_program   will save all variables in program 
     :param max_num_checkpoints will keep numbers of checkpoint serials not bigger than max_num_checkpoints
     """
@@ -497,7 +495,7 @@ def save_checkpoint(executor,
 
     save_trainer_args(cur_dir, trainer_id, trainer_args)
 
-    if is_chief:
+    if trainer_id == 0:
         save_persist_vars_without_grad(executor, cur_dir, main_program)
 
     _scroll_delete(checkpoint_dir, max_num_checkpoints)

python/paddle/fluid/trainer.py

@@ -136,7 +136,6 @@ class Trainer(object):
         # config for checkpoint
         # only chief worker will save variables
         self.trainer_id = 0
-        self.chief = True
         self.checkpoint_cfg = checkpoint_config
         if self.checkpoint_cfg:
             assert isinstance(self.checkpoint_cfg, CheckpointConfig)
@@ -201,7 +200,6 @@ class Trainer(object):
             self.nccl_id_var = None
         else:
             self.trainer_id = int(os.getenv("PADDLE_TRAINER_ID"))
-            self.chief = self.trainer_id == 0
             port = os.getenv("PADDLE_PSERVER_PORT")
             worker_ips = os.getenv("PADDLE_TRAINER_IPS")
             worker_endpoints = []
@@ -250,7 +248,7 @@ class Trainer(object):
         # the unique trainer id, starting from 0, needed by trainer
         # only
         self.trainer_id = int(os.getenv("PADDLE_TRAINER_ID", "0"))
-        self.chief = self.trainer_id == 0
+
         # the role, should be either PSERVER or TRAINER
         training_role = os.getenv("PADDLE_TRAINING_ROLE")
         with self._prog_and_scope_guard():
@@ -456,7 +454,6 @@ class Trainer(object):
                 executor=exe,
                 checkpoint_dir=self.checkpoint_cfg.checkpoint_dir,
                 trainer_id=self.trainer_id,
-                is_chief=self.chief,
                 trainer_args=self._get_checkpoint_save_args(epoch_id, step_id),
                 main_program=self.train_program,
                 max_num_checkpoints=self.checkpoint_cfg.max_num_checkpoints)