Merge pull request #53 from SunAhong1993/syf_slim

add quant log

paddlex/cv/models/slim/post_quantization.py

@@ -19,6 +19,9 @@ from paddle.fluid.contrib.slim.quantization import PostTrainingQuantization
 import paddlex.utils.logging as logging
 import paddle.fluid as fluid
 import os
+import re
+import numpy as np
+import time
 
 
 class PaddleXPostTrainingQuantization(PostTrainingQuantization):
@@ -123,28 +126,37 @@ class PaddleXPostTrainingQuantization(PostTrainingQuantization):
             the program of quantized model.
         '''
         self._preprocess()
-
+        batch_ct = 0
+        for data in self._data_loader():
+            batch_ct += 1
+            if self._batch_nums and batch_ct >= self._batch_nums:
+                break
         batch_id = 0
+        logging.info("Start to run batch!")
         for data in self._data_loader():
+            start = time.time()
             self._executor.run(
                 program=self._program,
                 feed=data,
                 fetch_list=self._fetch_list,
                 return_numpy=False)
             self._sample_data(batch_id)
-
-            if batch_id % 5 == 0:
-                logging.info("run batch: {}".format(batch_id))
+            end = time.time()
+            logging.debug('[Run batch data] Batch={}/{}, time_each_batch={} s.'.format(
+                str(batch_id + 1),
+                str(batch_ct),
+                str(end-start)))
             batch_id += 1
             if self._batch_nums and batch_id >= self._batch_nums:
                 break
-        logging.info("all run batch: ".format(batch_id))
-        logging.info("calculate scale factor ...")
+        logging.info("All run batch: ".format(batch_id))
+        logging.info("Calculate scale factor ...")
         self._calculate_scale_factor()
-        logging.info("update the program ...")
+        logging.info("Update the program ...")
         self._update_program()
-
+        logging.info("Save ...")
         self._save_output_scale()
+        logging.info("Finish quant!")
         return self._program
 
     def save_quantized_model(self, save_model_path):
@@ -221,3 +233,69 @@ class PaddleXPostTrainingQuantization(PostTrainingQuantization):
         for var in self._program.list_vars():
             if var.name in self._quantized_act_var_name:
                 var.persistable = True
+                
+    def _calculate_scale_factor(self):
+        '''
+        Calculate the scale factor of quantized variables.
+        '''
+        # apply channel_wise_abs_max quantization for weights
+        ct = 1
+        for var_name in self._quantized_weight_var_name:
+            start = time.time()
+            data = self._sampling_data[var_name]
+            scale_factor_per_channel = []
+            for i in range(data.shape[0]):
+                abs_max_value = np.max(np.abs(data[i]))
+                scale_factor_per_channel.append(abs_max_value)
+            self._quantized_var_scale_factor[
+                var_name] = scale_factor_per_channel
+            end = time.time()
+            logging.debug('[Calculate weight] Weight_id={}/{}, time_each_weight={} s.'.format(
+                str(ct),
+                str(len(self._quantized_weight_var_name)),
+                str(end-start)))
+            ct += 1
+            
+        ct = 1
+        # apply kl quantization for activation
+        if self._is_use_cache_file:
+            for var_name in self._quantized_act_var_name:
+                start = time.time()
+                sampling_data = []
+                filenames = [f for f in os.listdir(self._cache_dir) \
+                    if re.match(var_name + '_[0-9]+.npy', f)]
+                for filename in filenames:
+                    file_path = os.path.join(self._cache_dir, filename)
+                    sampling_data.append(np.load(file_path))
+                    os.remove(file_path)
+                sampling_data = np.concatenate(sampling_data)
+
+                if self._algo == "KL":
+                    self._quantized_var_scale_factor[var_name] = \
+                        self._get_kl_scaling_factor(np.abs(sampling_data))
+                else:
+                    self._quantized_var_scale_factor[var_name] = \
+                        np.max(np.abs(sampling_data))
+                end = time.time()
+                logging.debug('[Calculate activation] Activation_id={}/{}, time_each_activation={} s.'.format(
+                    str(ct),
+                    str(len(self._quantized_act_var_name)),
+                    str(end-start)))
+                ct += 1
+        else:
+            for var_name in self._quantized_act_var_name:
+                start = time.time()
+                self._sampling_data[var_name] = np.concatenate(
+                    self._sampling_data[var_name])
+                if self._algo == "KL":
+                    self._quantized_var_scale_factor[var_name] = \
+                        self._get_kl_scaling_factor(np.abs(self._sampling_data[var_name]))
+                else:
+                    self._quantized_var_scale_factor[var_name] = \
+                        np.max(np.abs(self._sampling_data[var_name]))
+                end = time.time()
+                logging.debug('[Calculate activation] Activation_id={}/{}, time_each_activation={} s.'.format(
+                    str(ct),
+                    str(len(self._quantized_act_var_name)),
+                    str(end-start)))
+                ct += 1