set accelerate_mode default True (#461)

* accelerate_mode default True

paddlehub/finetune/task/base_task.py

@@ -30,12 +30,13 @@ if six.PY2:
 else:
     from inspect import getfullargspec as get_args
 import numpy as np
+import paddle
 import paddle.fluid as fluid
 from tb_paddle import SummaryWriter
 
 import paddlehub as hub
 from paddlehub.common.paddle_helper import dtype_map, clone_program
-from paddlehub.common.utils import mkdir
+from paddlehub.common.utils import mkdir, version_compare
 from paddlehub.common.dir import tmp_dir
 from paddlehub.common.logger import logger
 from paddlehub.finetune.checkpoint import load_checkpoint, save_checkpoint
@@ -983,7 +984,7 @@ class BaseTask(object):
                 data,
                 load_best_model=True,
                 return_result=False,
-                accelerate_mode=False):
+                accelerate_mode=True):
         """
         make prediction for the input data.
 
@@ -996,6 +997,11 @@ class BaseTask(object):
         Returns:
             RunState: the running result of predict phase
         """
+        if not version_compare(paddle.__version__, "1.6.2") and accelerate_mode:
+            logger.warning(
+                "Fail to open predict accelerate mode as it does not support paddle < 1.6.2. Please update PaddlePaddle."
+            )
+            accelerate_mode = False
         self.accelerate_mode = accelerate_mode
 
         with self.phase_guard(phase="predict"):