diff --git a/tools/download.py b/tools/download.py
index 35cf77a725a9790c3cd2804ffd4e6ce1509b39de..a9500efd377cb709a6a170716c18559247bf98cf 100644
--- a/tools/download.py
+++ b/tools/download.py
@@ -12,9 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import argparse
-
 from ppcls import model_zoo
+import argparse
+import os
+import sys
+__dir__ = os.path.dirname(os.path.abspath(__file__))
+sys.path.append(__dir__)
+sys.path.append(os.path.abspath(os.path.join(__dir__, '..')))
 
 
 def parse_args():
diff --git a/tools/eval.py b/tools/eval.py
index c458951811a503391601860ba5a83aacd6211eb8..c917deb11fae9155d7527caa7f051417105d7a6b 100644
--- a/tools/eval.py
+++ b/tools/eval.py
@@ -13,19 +13,22 @@
 # limitations under the License.
 
 from __future__ import absolute_import
+import program
+from ppcls.utils import logger
+from ppcls.utils.save_load import init_model
+from ppcls.utils.config import get_config
+from ppcls.data import Reader
+import paddle.fluid as fluid
+import paddle
+import argparse
 from __future__ import division
 from __future__ import print_function
 
 import os
-import argparse
-
-from ppcls.data import Reader
-from ppcls.utils.config import get_config
-from ppcls.utils.save_load import init_model
-from ppcls.utils import logger
-
-from paddle.fluid.incubate.fleet.collective import fleet
-from paddle.fluid.incubate.fleet.base import role_maker
+import sys
+__dir__ = os.path.dirname(os.path.abspath(__file__))
+sys.path.append(__dir__)
+sys.path.append(os.path.abspath(os.path.join(__dir__, '..')))
 
 
 def parse_args():
@@ -47,21 +50,26 @@ def parse_args():
 
 
 def main(args):
-    # assign the place
-    gpu_id = fluid.dygraph.parallel.Env().dev_id
-    place = fluid.CUDAPlace(gpu_id)
+    config = get_config(args.config, overrides=args.override, show=True)
+    # assign place
+    use_gpu = config.get("use_gpu", True)
+    if use_gpu:
+        gpu_id = fluid.dygraph.ParallelEnv().dev_id
+        place = fluid.CUDAPlace(gpu_id)
+    else:
+        place = fluid.CPUPlace()
     with fluid.dygraph.guard(place):
-        pre_weights_dict = fluid.dygraph.load_dygraph(config.pretrained_model)[0]
         strategy = fluid.dygraph.parallel.prepare_context()
         net = program.create_model(config.ARCHITECTURE, config.classes_num)
         net = fluid.dygraph.parallel.DataParallel(net, strategy)
-        net.set_dict(pre_weights_dict)
+        init_model(config, net, optimizer=None)
         valid_dataloader = program.create_dataloader()
         valid_reader = Reader(config, 'valid')()
         valid_dataloader.set_sample_list_generator(valid_reader, place)
         net.eval()
         top1_acc = program.run(valid_dataloader, config, net, None, 0, 'valid')
 
+
 if __name__ == '__main__':
     args = parse_args()
     main(args)
diff --git a/tools/eval.sh b/tools/eval.sh
index 7da3ad4c9411a532966d3544558f87e027050492..42770cd56ff8fb56ceb5474d1909d95774450b68 100644
--- a/tools/eval.sh
+++ b/tools/eval.sh
@@ -1,6 +1,6 @@
-export PYTHONPATH=$PWD:$PYTHONPATH
-
 python -m paddle.distributed.launch \
     --selected_gpus="0" \
     tools/eval.py \
-        -c ./configs/eval.yaml
+        -c ./configs/eval.yaml \
+        -o load_static_weights=True \
+        -o use_gpu=False
diff --git a/tools/infer/infer.py b/tools/infer/infer.py
index 410a90476590a70b651977b55d463457fa7710ac..a4aa1c6fb7df7971eba10ae43a84841c9a73da60 100644
--- a/tools/infer/infer.py
+++ b/tools/infer/infer.py
@@ -12,13 +12,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import utils
-import argparse
-import numpy as np
-
-import paddle.fluid as fluid
-from ppcls.modeling import architectures
 from ppcls.utils.save_load import load_dygraph_pretrain
+from ppcls.modeling import architectures
+import paddle.fluid as fluid
+import numpy as np
+import argparse
+import utils
+import os
+import sys
+__dir__ = os.path.dirname(os.path.abspath(__file__))
+sys.path.append(__dir__)
+sys.path.append(os.path.abspath(os.path.join(__dir__, '../..')))
 
 
 def parse_args():
@@ -66,6 +70,23 @@ def postprocess(outputs, topk=5):
     return zip(index, prob[index])
 
 
+def get_image_list(img_file):
+    imgs_lists = []
+    if img_file is None or not os.path.exists(img_file):
+        raise Exception("not found any img file in {}".format(img_file))
+
+    img_end = ['jpg', 'png', 'jpeg', 'JPEG', 'JPG', 'bmp']
+    if os.path.isfile(img_file) and img_file.split('.')[-1] in img_end:
+        imgs_lists.append(img_file)
+    elif os.path.isdir(img_file):
+        for single_file in os.listdir(img_file):
+            if single_file.split('.')[-1] in img_end:
+                imgs_lists.append(os.path.join(img_file, single_file))
+    if len(imgs_lists) == 0:
+        raise Exception("not found any img file in {}".format(img_file))
+    return imgs_lists
+
+
 def main():
     args = parse_args()
     operators = create_operators()
@@ -78,22 +99,25 @@ def main():
 
     with fluid.dygraph.guard(place):
         net = architectures.__dict__[args.model]()
-        data = preprocess(args.image_file, operators)
-        data = np.expand_dims(data, axis=0)
-        data = fluid.dygraph.to_variable(data)
         load_dygraph_pretrain(net, args.pretrained_model,
                               args.load_static_weights)
-        net.eval()
-        outputs = net(data)
-        outputs = fluid.layers.softmax(outputs)
-        outputs = outputs.numpy()
-
-    probs = postprocess(outputs)
-    rank = 1
-    for idx, prob in probs:
-        print("top{:d}, class id: {:d}, probability: {:.4f}".format(rank, idx,
-                                                                    prob))
-        rank += 1
+        image_list = get_image_list(args.image_file)
+        for idx, filename in enumerate(image_list):
+            data = preprocess(filename, operators)
+            data = np.expand_dims(data, axis=0)
+            data = fluid.dygraph.to_variable(data)
+            net.eval()
+            outputs = net(data)
+            outputs = fluid.layers.softmax(outputs)
+            outputs = outputs.numpy()
+
+            probs = postprocess(outputs)
+            rank = 1
+            print("Current image file: {}".format(filename))
+            for idx, prob in probs:
+                print("\ttop{:d}, class id: {:d}, probability: {:.4f}".format(
+                    rank, idx, prob))
+                rank += 1
     return
 
 
diff --git a/tools/infer/predict.py b/tools/infer/predict.py
index 26b7a6cd448b9088b7c4b536ba6b7f31360688d7..02d0e526d612afb15bd564fc73823d3053fabbdd 100644
--- a/tools/infer/predict.py
+++ b/tools/infer/predict.py
@@ -15,13 +15,10 @@
 import argparse
 import utils
 import numpy as np
-import logging
 import time
 
 from paddle.fluid.core import AnalysisConfig
 from paddle.fluid.core import create_paddle_predictor
-logging.basicConfig(level=logging.INFO)
-logger = logging.getLogger(__name__)
 
 
 def parse_args():
@@ -101,7 +98,6 @@ def main():
     else:
         assert args.use_gpu is True
         assert args.model_name is not None
-        assert args.use_tensorrt is True
     # HALF precission predict only work when using tensorrt
     if args.use_fp16 is True:
         assert args.use_tensorrt is True
@@ -130,8 +126,9 @@ def main():
         output = output.flatten()
         cls = np.argmax(output)
         score = output[cls]
-        logger.info("class: {0}".format(cls))
-        logger.info("score: {0}".format(score))
+        print("Current image file: {}".format(args.image_file))
+        print("\ttop-1 class: {0}".format(cls))
+        print("\ttop-1 score: {0}".format(score))
     else:
         for i in range(0, test_num + 10):
             inputs = np.random.rand(args.batch_size, 3, 224,
@@ -145,11 +142,13 @@ def main():
             output = output.flatten()
             if i >= 10:
                 test_time += time.time() - start_time
+            time.sleep(0.01)  # sleep for T4 GPU
 
         fp_message = "FP16" if args.use_fp16 else "FP32"
-        logger.info("{0}\t{1}\tbatch size: {2}\ttime(ms): {3}".format(
-            args.model_name, fp_message, args.batch_size, 1000 * test_time /
-            test_num))
+        trt_msg = "using tensorrt" if args.use_tensorrt else "not using tensorrt"
+        print("{0}\t{1}\t{2}\tbatch size: {3}\ttime(ms): {4}".format(
+            args.model_name, trt_msg, fp_message, args.batch_size, 1000 *
+            test_time / test_num))
 
 
 if __name__ == "__main__":
diff --git a/tools/infer/py_infer.py b/tools/infer/py_infer.py
index 512c16b38df94b2ab335890f46c107f65cdc4dd3..78bf606232815d22e306b2af9c7a2721015d96f6 100644
--- a/tools/infer/py_infer.py
+++ b/tools/infer/py_infer.py
@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import os
 import utils
 import argparse
 import numpy as np
@@ -26,8 +27,6 @@ def parse_args():
     parser = argparse.ArgumentParser()
     parser.add_argument("-i", "--image_file", type=str)
     parser.add_argument("-d", "--model_dir", type=str)
-    parser.add_argument("-m", "--model_file", type=str)
-    parser.add_argument("-p", "--params_file", type=str)
     parser.add_argument("--use_gpu", type=str2bool, default=True)
 
     return parser.parse_args()
@@ -41,10 +40,7 @@ def create_predictor(args):
 
     exe = fluid.Executor(place)
     [program, feed_names, fetch_lists] = fluid.io.load_inference_model(
-        args.model_dir,
-        exe,
-        model_filename=args.model_file,
-        params_filename=args.params_file)
+        args.model_dir, exe, model_filename="model", params_filename="params")
     compiled_program = fluid.compiler.CompiledProgram(program)
 
     return exe, compiled_program, feed_names, fetch_lists
@@ -70,7 +66,6 @@ def preprocess(fname, ops):
     data = open(fname, 'rb').read()
     for op in ops:
         data = op(data)
-
     return data
 
 
@@ -81,21 +76,40 @@ def postprocess(outputs, topk=5):
     return zip(index, prob[index])
 
 
+def get_image_list(img_file):
+    imgs_lists = []
+    if img_file is None or not os.path.exists(img_file):
+        raise Exception("not found any img file in {}".format(img_file))
+
+    img_end = ['jpg', 'png', 'jpeg', 'JPEG', 'JPG', 'bmp']
+    if os.path.isfile(img_file) and img_file.split('.')[-1] in img_end:
+        imgs_lists.append(img_file)
+    elif os.path.isdir(img_file):
+        for single_file in os.listdir(img_file):
+            if single_file.split('.')[-1] in img_end:
+                imgs_lists.append(os.path.join(img_file, single_file))
+    if len(imgs_lists) == 0:
+        raise Exception("not found any img file in {}".format(img_file))
+    return imgs_lists
+
+
 def main():
     args = parse_args()
     operators = create_operators()
     exe, program, feed_names, fetch_lists = create_predictor(args)
 
-    data = preprocess(args.image_file, operators)
-    data = np.expand_dims(data, axis=0)
-    outputs = exe.run(program,
-                      feed={feed_names[0]: data},
-                      fetch_list=fetch_lists,
-                      return_numpy=False)
-    probs = postprocess(outputs)
-
-    for idx, prob in probs:
-        print("class id: {:d}, probability: {:.4f}".format(idx, prob))
+    image_list = get_image_list(args.image_file)
+    for idx, filename in enumerate(image_list):
+        data = preprocess(filename, operators)
+        data = np.expand_dims(data, axis=0)
+        outputs = exe.run(program,
+                          feed={feed_names[0]: data},
+                          fetch_list=fetch_lists,
+                          return_numpy=False)
+        probs = postprocess(outputs)
+        print("Current image file: {}".format(filename))
+        for idx, prob in probs:
+            print("\tclass id: {:d}, probability: {:.4f}".format(idx, prob))
 
 
 if __name__ == "__main__":
diff --git a/tools/run.sh b/tools/run.sh
index 5e8043b1205f99dada7448d172f84cd0661df509..ad1e5448904815dc35c689b02f6b7a0094eddd22 100755
--- a/tools/run.sh
+++ b/tools/run.sh
@@ -1,7 +1,5 @@
 #!/usr/bin/env bash
 
-export PYTHONPATH=$PWD:$PYTHONPATH
-
 python -m paddle.distributed.launch \
     --selected_gpus="0,1,2,3" \
     tools/train.py \
diff --git a/tools/run_download.sh b/tools/run_download.sh
index ba9fa0fc5388db19ed54588ab223ccb0593e33f5..ffcbd88c742a023f214e1e91bb5445af63b6a603 100755
--- a/tools/run_download.sh
+++ b/tools/run_download.sh
@@ -1,5 +1,3 @@
 #!/usr/bin/env bash
 
-export PYTHONPATH=$PWD:$PYTHONPATH
-
 python tools/download.py -a ResNet34 -p ./pretrained/ -d 1
diff --git a/tools/train.py b/tools/train.py
index afb78354874250019d22386d8226a62ba979e60a..9c5e6e5cf3e382a5f8c5694cfd5f1ddb93c55173 100644
--- a/tools/train.py
+++ b/tools/train.py
@@ -13,19 +13,21 @@
 # limitations under the License.
 
 from __future__ import absolute_import
+import program
+from ppcls.utils import logger
+from ppcls.utils.save_load import init_model, save_model
+from ppcls.utils.config import get_config
+from ppcls.data import Reader
+import paddle.fluid as fluid
 from __future__ import division
 from __future__ import print_function
 
 import argparse
 import os
-
-import paddle.fluid as fluid
-
-from ppcls.data import Reader
-from ppcls.utils.config import get_config
-from ppcls.utils.save_load import init_model, save_model
-from ppcls.utils import logger
-import program
+import sys
+__dir__ = os.path.dirname(os.path.abspath(__file__))
+sys.path.append(__dir__)
+sys.path.append(os.path.abspath(os.path.join(__dir__, '..')))
 
 
 def parse_args():
@@ -49,8 +51,12 @@ def parse_args():
 def main(args):
     config = get_config(args.config, overrides=args.override, show=True)
     # assign the place
-    gpu_id = fluid.dygraph.parallel.Env().dev_id
-    place = fluid.CUDAPlace(gpu_id)
+    use_gpu = config.get("use_gpu", True)
+    if use_gpu:
+        gpu_id = fluid.dygraph.ParallelEnv().dev_id
+        place = fluid.CUDAPlace(gpu_id)
+    else:
+        place = fluid.CPUPlace()
 
     use_data_parallel = int(os.getenv("PADDLE_TRAINERS_NUM", 1)) != 1
     config["use_data_parallel"] = use_data_parallel