add default config and quantize_op_types description for tensorrt and paddle-lite (#23)

* refine quanter

* add details in doc

* check type of for_tensorrt and is_full_quantize

* add description for tensorrt

demo/quant/quant_aware/README.md

@@ -20,8 +20,7 @@ quant_config = {
     'quantize_op_types': ['conv2d', 'depthwise_conv2d', 'mul'],
     'dtype': 'int8',
     'window_size': 10000,
-    'moving_rate': 0.9,
-    'quant_weight_only': False
+    'moving_rate': 0.9
 }
 ```
 
@@ -49,7 +48,7 @@ compiled_train_prog = compiled_train_prog.with_data_parallel(
 ### 4. freeze program
 
 ```
-float_program, int8_program = convert(val_program, 
+float_program, int8_program = convert(val_program,
                                       place,
                                       quant_config,
                                       scope=None,

demo/quant/quant_aware/train.py

@@ -78,27 +78,24 @@ def compress(args):
     # 1. quantization configs
     ############################################################################################################
     quant_config = {
-        # weight quantize type, default is 'abs_max'
-        'weight_quantize_type': 'abs_max',
-        # activation quantize type, default is 'abs_max'
+        # weight quantize type, default is 'channel_wise_abs_max'
+        'weight_quantize_type': 'channel_wise_abs_max',
+        # activation quantize type, default is 'moving_average_abs_max'
         'activation_quantize_type': 'moving_average_abs_max',
         # weight quantize bit num, default is 8
         'weight_bits': 8,
         # activation quantize bit num, default is 8
         'activation_bits': 8,
-        # op of name_scope in not_quant_pattern list, will not quantized
+        # ops of name_scope in not_quant_pattern list, will not be quantized
         'not_quant_pattern': ['skip_quant'],
-        # op of types in quantize_op_types, will quantized
+        # ops of type in quantize_op_types, will be quantized
         'quantize_op_types': ['conv2d', 'depthwise_conv2d', 'mul'],
-        # data type after quantization, default is 'int8'
+        # data type after quantization, such as 'uint8', 'int8', etc. default is 'int8'
         'dtype': 'int8',
         # window size for 'range_abs_max' quantization. defaulf is 10000
         'window_size': 10000,
         # The decay coefficient of moving average, default is 0.9
         'moving_rate': 0.9,
-        # if set quant_weight_only True, then only quantize parameters of layers which need quantization,
-        # and insert anti-quantization op for parameters of these layers.
-        'quant_weight_only': False
     }
 
     train_reader = None
@@ -141,8 +138,10 @@ def compress(args):
     #    According to the weight and activation quantization type, the graph will be added
     #    some fake quantize operators and fake dequantize operators.
     ############################################################################################################
-    val_program = quant_aware(val_program, place, quant_config, scope=None, for_test=True)
-    compiled_train_prog = quant_aware(train_prog, place, quant_config, scope=None, for_test=False)
+    val_program = quant_aware(
+        val_program, place, quant_config, scope=None, for_test=True)
+    compiled_train_prog = quant_aware(
+        train_prog, place, quant_config, scope=None, for_test=False)
     opt = create_optimizer(args)
     opt.minimize(avg_cost)
 
@@ -152,7 +151,8 @@ def compress(args):
     if args.pretrained_model:
 
         def if_exist(var):
-            return os.path.exists(os.path.join(args.pretrained_model, var.name))
+            return os.path.exists(
+                os.path.join(args.pretrained_model, var.name))
 
         fluid.io.load_vars(exe, args.pretrained_model, predicate=if_exist)
 
@@ -199,9 +199,9 @@ def compress(args):
         build_strategy.sync_batch_norm = False
         exec_strategy = fluid.ExecutionStrategy()
         compiled_train_prog = compiled_train_prog.with_data_parallel(
-                loss_name=avg_cost.name,
-                build_strategy=build_strategy,
-                exec_strategy=exec_strategy)
+            loss_name=avg_cost.name,
+            build_strategy=build_strategy,
+            exec_strategy=exec_strategy)
 
         batch_id = 0
         for data in train_reader():
@@ -242,8 +242,8 @@ def compress(args):
     # 4. Save inference model
     ############################################################################################################
     model_path = os.path.join(quantization_model_save_dir, args.model,
-                              'act_' + quant_config['activation_quantize_type'] + '_w_' + quant_config[
-                                  'weight_quantize_type'])
+                              'act_' + quant_config['activation_quantize_type']
+                              + '_w_' + quant_config['weight_quantize_type'])
     float_path = os.path.join(model_path, 'float')
     int8_path = os.path.join(model_path, 'int8')
     if not os.path.isdir(model_path):
@@ -252,7 +252,8 @@ def compress(args):
     fluid.io.save_inference_model(
         dirname=float_path,
         feeded_var_names=[image.name],
-        target_vars=[out], executor=exe,
+        target_vars=[out],
+        executor=exe,
         main_program=float_program,
         model_filename=float_path + '/model',
         params_filename=float_path + '/params')
@@ -260,7 +261,8 @@ def compress(args):
     fluid.io.save_inference_model(
         dirname=int8_path,
         feeded_var_names=[image.name],
-        target_vars=[out], executor=exe,
+        target_vars=[out],
+        executor=exe,
         main_program=int8_program,
         model_filename=int8_path + '/model',
         params_filename=int8_path + '/params')

docs/docs/api/quantization_api.md

@@ -4,29 +4,50 @@
 通过字典配置量化参数
 
 ```
-quant_config_default = {
-    'weight_quantize_type': 'abs_max',
-    'activation_quantize_type': 'abs_max',
+TENSORRT_OP_TYPES = [
+    'mul', 'conv2d', 'pool2d', 'depthwise_conv2d', 'elementwise_add',
+    'leaky_relu'
+]
+TRANSFORM_PASS_OP_TYPES = ['conv2d', 'depthwise_conv2d', 'mul']
+
+QUANT_DEQUANT_PASS_OP_TYPES = [
+        "pool2d", "elementwise_add", "concat", "softmax", "argmax", "transpose",
+        "equal", "gather", "greater_equal", "greater_than", "less_equal",
+        "less_than", "mean", "not_equal", "reshape", "reshape2",
+        "bilinear_interp", "nearest_interp", "trilinear_interp", "slice",
+        "squeeze", "elementwise_sub", "relu", "relu6", "leaky_relu", "tanh", "swish"
+    ]
+
+_quant_config_default = {
+    # weight quantize type, default is 'channel_wise_abs_max'
+    'weight_quantize_type': 'channel_wise_abs_max',
+    # activation quantize type, default is 'moving_average_abs_max'
+    'activation_quantize_type': 'moving_average_abs_max',
+    # weight quantize bit num, default is 8
     'weight_bits': 8,
+    # activation quantize bit num, default is 8
     'activation_bits': 8,
     # ops of name_scope in not_quant_pattern list, will not be quantized
     'not_quant_pattern': ['skip_quant'],
     # ops of type in quantize_op_types, will be quantized
-    'quantize_op_types':
-    ['conv2d', 'depthwise_conv2d', 'mul', 'elementwise_add', 'pool2d'],
+    'quantize_op_types': ['conv2d', 'depthwise_conv2d', 'mul'],
     # data type after quantization, such as 'uint8', 'int8', etc. default is 'int8'
     'dtype': 'int8',
     # window size for 'range_abs_max' quantization. defaulf is 10000
     'window_size': 10000,
     # The decay coefficient of moving average, default is 0.9
     'moving_rate': 0.9,
+    # if True, 'quantize_op_types' will be TENSORRT_OP_TYPES
+    'for_tensorrt': False,
+    # if True, 'quantoze_op_types' will be TRANSFORM_PASS_OP_TYPES + QUANT_DEQUANT_PASS_OP_TYPES
+    'is_full_quantize': False
 }
 ```
 
 **参数：**
 
-- **weight_quantize_type(str)** - 参数量化方式。可选``'abs_max'``,  ``'channel_wise_abs_max'``, ``'range_abs_max'``, ``'moving_average_abs_max'``。 默认``'abs_max'``。
-- **activation_quantize_type(str)** - 激活量化方式，可选``'abs_max'``, ``'range_abs_max'``, ``'moving_average_abs_max'``，默认``'abs_max'``。
+- **weight_quantize_type(str)** - 参数量化方式。可选``'abs_max'``,  ``'channel_wise_abs_max'``, ``'range_abs_max'``, ``'moving_average_abs_max'``。如果使用``TensorRT``加载量化后的模型来预测，请使用``'channel_wise_abs_max'``。 默认``'channel_wise_abs_max'``。
+- **activation_quantize_type(str)** - 激活量化方式，可选``'abs_max'``, ``'range_abs_max'``, ``'moving_average_abs_max'``。如果使用``TensorRT``加载量化后的模型来预测，请使用``'range_abs_max', 'moving_average_abs_max'``。，默认``'moving_average_abs_max'``。
 - **weight_bits(int)** - 参数量化bit数，默认8, 推荐设为8。
 - **activation_bits(int)** -  激活量化bit数，默认8， 推荐设为8。
 - **not_quant_pattern(str | list[str])** - 所有``name_scope``包含``'not_quant_pattern'``字符串的``op``，都不量化, 设置方式请参考[*fluid.name_scope*](https://www.paddlepaddle.org.cn/documentation/docs/zh/api_cn/fluid_cn/name_scope_cn.html#name-scope)。
@@ -34,7 +55,12 @@ quant_config_default = {
 - **dtype(int8)** - 量化后的参数类型，默认 ``int8``, 目前仅支持``int8``。
 - **window_size(int)** -  ``'range_abs_max'``量化方式的``window size``，默认10000。
 - **moving_rate(int)** - ``'moving_average_abs_max'``量化方式的衰减系数，默认 0.9。
+- **for_tensorrt(bool)** - 量化后的模型是否使用``TensorRT``进行预测。如果是的话，量化op类型为：``TENSORRT_OP_TYPES``。默认值为False.
+- **is_full_quantize(bool)** - 是否量化所有可支持op类型。默认值为False.
 
+!!! note "注意事项"
+
+- 目前``Paddle-Lite``有int8 kernel来加速的op只有 ``['conv2d', 'depthwise_conv2d', 'mul']``, 其他op的int8 kernel将陆续支持。
 
 ## quant_aware
 paddleslim.quant.quant_aware(program, place, config, scope=None, for_test=False)[[源代码]](https://github.com/PaddlePaddle/PaddleSlim/blob/develop/paddleslim/quant/quanter.py)
@@ -67,7 +93,7 @@ paddleslim.quant.quant_aware(program, place, config, scope=None, for_test=False)
 
 
 
-## convert 
+## convert
 paddleslim.quant.convert(program, place, config, scope=None, save_int8=False)[[源代码]](https://github.com/PaddlePaddle/PaddleSlim/blob/develop/paddleslim/quant/quanter.py)
 
 
@@ -135,7 +161,7 @@ inference_prog = quant.convert(quant_eval_program, place, config)
 更详细的用法请参考 <a href='https://github.com/PaddlePaddle/PaddleSlim/tree/develop/demo/quant/quant_aware'>量化训练demo</a>。
 
 ## quant_post
-paddleslim.quant.quant_post(executor, model_dir, quantize_model_path,sample_generator, model_filename=None, params_filename=None, batch_size=16,batch_nums=None, scope=None, algo='KL', quantizable_op_type=["conv2d", "depthwise_conv2d", "mul"])[[源代码]](https://github.com/PaddlePaddle/PaddleSlim/blob/develop/paddleslim/quant/quanter.py)
+paddleslim.quant.quant_post(executor, model_dir, quantize_model_path,sample_generator, model_filename=None, params_filename=None, batch_size=16,batch_nums=None, scope=None, algo='KL', quantizable_op_type=["conv2d", "depthwise_conv2d", "mul"], is_full_quantize=False, is_use_cache_file=False, cache_dir="./temp_post_training")[[源代码]](https://github.com/PaddlePaddle/PaddleSlim/blob/develop/paddleslim/quant/quanter.py)
 
 : 对保存在``${model_dir}``下的模型进行量化，使用``sample_generator``的数据进行参数校正。
 
@@ -152,6 +178,9 @@ paddleslim.quant.quant_post(executor, model_dir, quantize_model_path,sample_gene
 - **scope(fluid.Scope, optional)** - 用来获取和写入``Variable``, 如果设置为``None``,则使用[*fluid.global_scope()*](https://www.paddlepaddle.org.cn/documentation/docs/zh/develop/api_cn/executor_cn/global_scope_cn.html). 默认值是``None``.
 - **algo(str)** - 量化时使用的算法名称，可为``'KL'``或者``'direct'``。该参数仅针对激活值的量化，因为参数值的量化使用的方式为``'channel_wise_abs_max'``. 当``algo`` 设置为``'direct'``时，使用校正数据的激活值的绝对值的最大值当作``Scale``值，当设置为``'KL'``时，则使用``KL``散度的方法来计算``Scale``值。默认值为``'KL'``。
 - **quantizable_op_type(list[str])** -  需要量化的``op``类型列表。默认值为``["conv2d", "depthwise_conv2d", "mul"]``。
+- **is_full_quantize(bool)** - 是否量化所有可支持的op类型。如果设置为False, 则按照 ``'quantizable_op_type'`` 的设置进行量化。
+- **is_use_cache_file(bool)** - 是否使用硬盘对中间结果进行存储。如果为False, 则将中间结果存储在内存中。
+- **cache_dir(str)** - 如果 ``'is_use_cache_file'``为True, 则将中间结果存储在此参数设置的路径下。
 
 **返回**
 
@@ -159,7 +188,8 @@ paddleslim.quant.quant_post(executor, model_dir, quantize_model_path,sample_gene
 
 !!! note "注意事项"
 
-因为该接口会收集校正数据的所有的激活值，所以使用的校正图片不能太多。``'KL'``散度的计算也比较耗时。
+- 因为该接口会收集校正数据的所有的激活值，当校正图片比较多时，请设置``'is_use_cache_file'``为True, 将中间结果存储在硬盘中。另外，``'KL'``散度的计算比较耗时。
+- 目前``Paddle-Lite``有int8 kernel来加速的op只有 ``['conv2d', 'depthwise_conv2d', 'mul']``, 其他op的int8 kernel将陆续支持。
 
 **代码示例**
 

paddleslim/quant/quanter.py

@@ -13,6 +13,8 @@
 # limitations under the License.
 
 import copy
+import logging
+
 import paddle
 import paddle.fluid as fluid
 from paddle.fluid.framework import IrGraph
@@ -24,22 +26,37 @@ from paddle.fluid.contrib.slim.quantization import PostTrainingQuantization
 from paddle.fluid.contrib.slim.quantization import AddQuantDequantPass
 from paddle.fluid import core
 
+from ..common import get_logger
+_logger = get_logger(__name__, level=logging.INFO)
+
 WEIGHT_QUANTIZATION_TYPES = [
     'abs_max', 'channel_wise_abs_max', 'range_abs_max',
     'moving_average_abs_max'
 ]
+WEIGHT_QUANTIZATION_TYPES_TENSORRT = ['channel_wise_abs_max']
+
 ACTIVATION_QUANTIZATION_TYPES = [
     'abs_max', 'range_abs_max', 'moving_average_abs_max'
 ]
+
+ACTIVATION_QUANTIZATION_TYPES_TENSORRT = [
+    'range_abs_max', 'moving_average_abs_max'
+]
+
 VALID_DTYPES = ['int8']
-TRANSFORM_PASS_OP_TYPES = ['conv2d', 'depthwise_conv2d', 'mul']
-QUANT_DEQUANT_PASS_OP_TYPES = ['elementwise_add', 'pool2d']
+TRANSFORM_PASS_OP_TYPES = QuantizationTransformPass._supported_quantizable_op_type
+QUANT_DEQUANT_PASS_OP_TYPES = AddQuantDequantPass._supported_quantizable_op_type + \
+        AddQuantDequantPass._activation_type
+TENSORRT_OP_TYPES = [
+    'mul', 'conv2d', 'pool2d', 'depthwise_conv2d', 'elementwise_add',
+    'leaky_relu'
+]
 
 _quant_config_default = {
-    # weight quantize type, default is 'abs_max'
-    'weight_quantize_type': 'abs_max',
-    # activation quantize type, default is 'abs_max'
-    'activation_quantize_type': 'abs_max',
+    # weight quantize type, default is 'channel_wise_abs_max'
+    'weight_quantize_type': 'channel_wise_abs_max',
+    # activation quantize type, default is 'moving_average_abs_max'
+    'activation_quantize_type': 'moving_average_abs_max',
     # weight quantize bit num, default is 8
     'weight_bits': 8,
     # activation quantize bit num, default is 8
@@ -47,25 +64,25 @@ _quant_config_default = {
     # ops of name_scope in not_quant_pattern list, will not be quantized
     'not_quant_pattern': ['skip_quant'],
     # ops of type in quantize_op_types, will be quantized
-    'quantize_op_types':
-    ['conv2d', 'depthwise_conv2d', 'mul', 'elementwise_add', 'pool2d'],
+    'quantize_op_types': ['conv2d', 'depthwise_conv2d', 'mul'],
     # data type after quantization, such as 'uint8', 'int8', etc. default is 'int8'
     'dtype': 'int8',
     # window size for 'range_abs_max' quantization. defaulf is 10000
     'window_size': 10000,
     # The decay coefficient of moving average, default is 0.9
     'moving_rate': 0.9,
-    # if set quant_weight_only True, then only quantize parameters of layers which need to be quantized,
-    # and activations will not be quantized.
-    'quant_weight_only': False
+    # if True, 'quantize_op_types' will be TENSORRT_OP_TYPES
+    'for_tensorrt': False,
+    # if True, 'quantoze_op_types' will be TRANSFORM_PASS_OP_TYPES + QUANT_DEQUANT_PASS_OP_TYPES 
+    'is_full_quantize': False
 }
 
 
 def _parse_configs(user_config):
     """
-    check user configs is valid, and set default value if user not config.
+    check if user's configs are valid.
     Args:
-        user_config(dict):the config of user.
+        user_config(dict): user's config.
     Return:
         configs(dict): final configs will be used.
     """
@@ -73,12 +90,26 @@ def _parse_configs(user_config):
     configs = copy.deepcopy(_quant_config_default)
     configs.update(user_config)
 
-    # check configs is valid
-    assert configs['weight_quantize_type'] in WEIGHT_QUANTIZATION_TYPES, \
-        "Unknown weight_quantize_type: '%s'. It can only be " + " ".join(WEIGHT_QUANTIZATION_TYPES)
+    assert isinstance(configs['for_tensorrt'], bool) and isinstance(
+        configs['is_full_quantize'],
+        bool), "'for_tensorrt' and 'is_full_quantize' must both be bool'"
+
+    # check if configs is valid
+    if configs['for_tensorrt']:
+        weight_types = WEIGHT_QUANTIZATION_TYPES_TENSORRT
+        activation_types = ACTIVATION_QUANTIZATION_TYPES_TENSORRT
+        platform = 'TensorRT'
+    else:
+        weight_types = WEIGHT_QUANTIZATION_TYPES
+        activation_types = WEIGHT_QUANTIZATION_TYPES
+        platform = 'PaddleLite'
+    assert configs['weight_quantize_type'] in weight_types, \
+        "Unknown weight_quantize_type: {}. {} only supports {} ".format(configs['weight_quantize_type'],
+                platform, weight_types)
 
-    assert configs['activation_quantize_type'] in ACTIVATION_QUANTIZATION_TYPES, \
-        "Unknown activation_quantize_type: '%s'. It can only be " + " ".join(ACTIVATION_QUANTIZATION_TYPES)
+    assert configs['activation_quantize_type'] in activation_types, \
+        "Unknown activation_quantize_type: {}. {} only supports {}".format(configs['activation_quantize_type'],
+                platform, activation_types)
 
     assert isinstance(configs['weight_bits'], int), \
         "weight_bits must be int value."
@@ -92,17 +123,24 @@ def _parse_configs(user_config):
     assert (configs['activation_bits'] >= 1 and configs['activation_bits'] <= 16), \
         "activation_bits should be between 1 and 16."
 
-    assert isinstance(configs['not_quant_pattern'], list), \
-        "not_quant_pattern must be a list"
+    assert isinstance(configs['not_quant_pattern'], (list, str)), \
+        "not_quant_pattern must be list or str"
 
     assert isinstance(configs['quantize_op_types'], list), \
         "quantize_op_types must be a list"
 
-    for op_type in configs['quantize_op_types']:
-        assert (op_type in QUANT_DEQUANT_PASS_OP_TYPES) or (
-            op_type in TRANSFORM_PASS_OP_TYPES), "{} is not support, \
-                    now support op types are {}".format(
-                op_type, TRANSFORM_PASS_OP_TYPES + QUANT_DEQUANT_PASS_OP_TYPES)
+    if configs['for_tensorrt']:
+        configs['quantize_op_types'] = TENSORRT_OP_TYPES
+    elif configs['is_full_quantize']:
+        configs[
+            'quantize_op_types'] = TRANSFORM_PASS_OP_TYPES + QUANT_DEQUANT_PASS_OP_TYPES
+    else:
+        for op_type in configs['quantize_op_types']:
+            assert (op_type in QUANT_DEQUANT_PASS_OP_TYPES) or (
+                op_type in TRANSFORM_PASS_OP_TYPES), "{} is not support, \
+                        now support op types are {}".format(
+                    op_type,
+                    TRANSFORM_PASS_OP_TYPES + QUANT_DEQUANT_PASS_OP_TYPES)
 
     assert isinstance(configs['dtype'], str), \
         "dtype must be a str."
@@ -116,36 +154,31 @@ def _parse_configs(user_config):
     assert isinstance(configs['moving_rate'], float), \
         "moving_rate must be float value, The decay coefficient of moving average, default is 0.9."
 
-    assert isinstance(configs['quant_weight_only'], bool), \
-        "quant_weight_only must be bool value, if set quant_weight_only True, " \
-        "then only quantize parameters of layers which need to be quantized, " \
-        " and activations will not be quantized."
-
     return configs
 
 
-def quant_aware(program, place, config, scope=None, for_test=False):
+def quant_aware(program, place, config=None, scope=None, for_test=False):
     """
     add trainable quantization ops in program.
     Args:
-        program(fluid.Program): program
-        scope(fluid.Scope): the scope to store var, it's should be the value of program's scope, usually it's fluid.global_scope().
-        place(fluid.CPUPlace or fluid.CUDAPlace): place
-        config(dict): configs for quantization, default values are in quant_config_default dict.
-        for_test: if program is test program, for_test should be set True, else False.
+        program(fluid.Program): program to quant
+        place(fluid.CPUPlace or fluid.CUDAPlace): CPU or CUDA device
+        config(dict, optional): configs for quantization. if None, will use default config. Default is None.
+        scope(fluid.Scope): the scope to store var, it should be program's scope. if None, will use fluid.global_scope().
+            default is None.
+        for_test(bool): if program is test program, set True when program is for test, False when program is for train. Default is False.
     Return:
         fluid.Program: user can finetune this quantization program to enhance the accuracy.
     """
 
     scope = fluid.global_scope() if not scope else scope
-    assert isinstance(config, dict), "config must be dict"
-
-    assert 'weight_quantize_type' in config.keys(
-    ), 'weight_quantize_type must be configured'
-    assert 'activation_quantize_type' in config.keys(
-    ), 'activation_quantize_type must be configured'
+    if config is None:
+        config = _quant_config_default
+    else:
+        assert isinstance(config, dict), "config must be dict"
+        config = _parse_configs(config)
+    _logger.info("quant_aware config {}".format(config))
 
-    config = _parse_configs(config)
     main_graph = IrGraph(core.Graph(program.desc), for_test=for_test)
 
     transform_pass_ops = []
@@ -197,7 +230,10 @@ def quant_post(executor,
                batch_nums=None,
                scope=None,
                algo='KL',
-               quantizable_op_type=["conv2d", "depthwise_conv2d", "mul"]):
+               quantizable_op_type=["conv2d", "depthwise_conv2d", "mul"],
+               is_full_quantize=False,
+               is_use_cache_file=False,
+               cache_dir="./temp_post_training"):
     """
     The function utilizes post training quantization method to quantize the 
     fp32 model. It uses calibrate data to calculate the scale factor of 
@@ -232,6 +268,11 @@ def quant_post(executor,
         quantizable_op_type(list[str], optional): The list of op types
                         that will be quantized. Default is ["conv2d", "depthwise_conv2d", 
                         "mul"].
+        is_full_quantize(bool): if True, apply quantization to all supported quantizable op type.
+                        If False, only apply quantization to the input quantizable_op_type. Default is False.
+        is_use_cache_file(bool): If False, all temp data will be saved in memory. If True,
+                                all temp data will be saved to disk. Defalut is False.
+        cache_dir(str): When 'is_use_cache_file' is True, temp data will be save in 'cache_dir'. Default is './temp_post_training'.
     Returns:
         None
     """
@@ -246,41 +287,64 @@ def quant_post(executor,
         scope=scope,
         algo=algo,
         quantizable_op_type=quantizable_op_type,
-        is_full_quantize=False)
+        is_full_quantize=is_full_quantize,
+        is_use_cache_file=is_use_cache_file,
+        cache_dir=cache_dir)
     post_training_quantization.quantize()
     post_training_quantization.save_quantized_model(quantize_model_path)
 
 
-def convert(program, place, config, scope=None, save_int8=False):
+def convert(program, place, config=None, scope=None, save_int8=False):
     """
-    add quantization ops in program. the program returned is not trainable.
+    change quantization ops order in program. return program that can used by Paddle-Lite.
     Args:
-        program(fluid.Program): program
-        scope(fluid.Scope): the scope to store var, when is None will use fluid.global_scope()
-        place(fluid.CPUPlace or fluid.CUDAPlace): place
-        config(dict): configs for quantization, default values are in quant_config_default dict.
-        save_int8: is export int8 freezed program.
+        program(fluid.Program): program that returned by quant_aware
+        place(fluid.CPUPlace or fluid.CUDAPlace): CPU or CUDA device
+        scope(fluid.Scope, optional):  the scope to store var, it should be program's scope. if None, will use fluid.global_scope().
+            default is None.
+        config(dict, optional): configs for convert. if set None, will use default config. Default is None.\
+                It must be same with config that used in 'quant_aware'.
+        save_int8: if return int8 freezed program. Int8 program can only be used to check size of model weights. \
+                It cannot be used in Fluid or Paddle-Lite.
     Return:
-        fluid.Program: freezed program which can be used for inference.
+        freezed_program(fluid.Program): freezed program which can be used for inference.
                        parameters is float32 type, but it's value in int8 range.
-        fluid.Program: freezed int8 program which can be used for inference.
-                       if save_int8 is False, this value is None.
+        freezed_program_int8(fluid.Program): freezed int8 program.
+        when save_int8 is False, return freezed_program.
+        when save_int8 is True, return freezed_program and freezed_program_int8
     """
     scope = fluid.global_scope() if not scope else scope
+
+    if config is None:
+        config = _quant_config_default
+    else:
+        assert isinstance(config, dict), "config must be dict"
+        config = _parse_configs(config)
+    _logger.info("convert config {}".format(config))
+
     test_graph = IrGraph(core.Graph(program.desc), for_test=True)
+    support_op_types = []
+    for op in config['quantize_op_types']:
+        if op in QuantizationFreezePass._supported_quantizable_op_type:
+            support_op_types.append(op)
 
     # Freeze the graph after training by adjusting the quantize
     # operators' order for the inference.
     freeze_pass = QuantizationFreezePass(
         scope=scope,
         place=place,
-        weight_quantize_type=config['weight_quantize_type'])
+        weight_bits=config['weight_bits'],
+        activation_bits=config['activation_bits'],
+        weight_quantize_type=config['weight_quantize_type'],
+        quantizable_op_type=support_op_types)
     freeze_pass.apply(test_graph)
     freezed_program = test_graph.to_program()
 
     if save_int8:
         convert_int8_pass = ConvertToInt8Pass(
-            scope=fluid.global_scope(), place=place)
+            scope=fluid.global_scope(),
+            place=place,
+            quantizable_op_type=support_op_types)
         convert_int8_pass.apply(test_graph)
         freezed_program_int8 = test_graph.to_program()
         return freezed_program, freezed_program_int8