remove trainer_id

tools/train_multi_platform.py

@@ -120,20 +120,19 @@ def main(args):
         # 1. train with train dataset
         program.run(train_dataloader, exe, compiled_train_prog, train_fetchs,
                     epoch_id, 'train', vdl_writer)
-        if int(os.getenv("PADDLE_TRAINER_ID", 0)) == 0:
+
         # 2. validate with validate dataset
         if config.validate and epoch_id % config.valid_interval == 0:
             if config.get('use_ema'):
                 logger.info(logger.coloring("EMA validate start..."))
                 with ema.apply(exe):
-                        top1_acc = program.run(valid_dataloader, exe,
-                                               compiled_valid_prog,
-                                               valid_fetchs, epoch_id, 'valid')
-                    logger.info(logger.coloring("EMA validate over!"))
-
                     top1_acc = program.run(valid_dataloader, exe,
                                            compiled_valid_prog, valid_fetchs,
                                            epoch_id, 'valid')
+                logger.info(logger.coloring("EMA validate over!"))
+
+            top1_acc = program.run(valid_dataloader, exe, compiled_valid_prog,
+                                   valid_fetchs, epoch_id, 'valid')
             if top1_acc > best_top1_acc:
                 best_top1_acc = top1_acc
                 message = "The best top1 acc {:.5f}, in epoch: {:d}".format(