remove old dataloader & generator from quantilization (PaddlePaddle#5…

…5754)

* remove old dataloader & generator from quantilization

* fix ut test_post_training_quantization_mnist

python/paddle/static/quantization/post_training_quantization.py

@@ -23,12 +23,10 @@
 except:
     from .utils import tqdm
 
-from inspect import isgeneratorfunction
 
 from paddle.fluid.framework import IrGraph, _get_var
 
 from ... import io, static
-from ...fluid import reader
 from ...framework import core
 from ...utils import unique_name
 from ..log_helper import get_logger
@@ -171,16 +169,16 @@ def __init__(
                 When all parameters were saved in a single binary file, set it
                 as the real filename. If parameters were saved in separate files,
                 set it as 'None'. Default is 'None'.
-            batch_generator(Python Generator): The batch generator provides
+            batch_generator(Python Generator, depreceated): The batch generator provides
                 calibrate data for DataLoader, and it returns a batch every
                 time. Note that, sample_generator and batch_generator, only one
                 should be set. Beisdes, batch_generator supports lod tensor.
-            sample_generator(Python Generator): The sample generator provides
+            sample_generator(Python Generator, depreceated): The sample generator provides
                 calibrate data for DataLoader, and it only returns a sample every
                 time. Note that, sample_generator and batch_generator, only one
                 should be set. Beisdes, sample_generator dose not support lod tensor.
-            data_loader(Python Generator, Paddle.io.DataLoader, optional): The
-                Generator or Dataloader provides calibrate data, and it could
+            data_loader(Paddle.io.DataLoader): The
+                Dataloader provides calibrate data, and it could
                 return a batch every time.
             batch_size(int, optional): The batch size of DataLoader. Default is 10.
             batch_nums(int, optional): If batch_nums is not None, the number of
@@ -309,22 +307,12 @@ def __init__(
 
         # Check inputs
         assert executor is not None, "The executor cannot be None."
-        assert any(
-            [gen is not None]
-            for gen in [sample_generator, batch_generator, data_loader]
-        ), (
-            "The sample_generator, batch_generator "
-            "and data_loader cannot be None in the same time."
-        )
-        if data_loader is not None:
-            assert isinstance(
-                data_loader,
-                (
-                    io.DataLoader,
-                    type(isgeneratorfunction),
-                    reader.GeneratorLoader,
-                ),
-            ), "data_loader only accepts `paddle.io.DataLoader` or Generator instance."
+        assert data_loader is not None, "data_loader cannot be None."
+
+        assert isinstance(
+            data_loader, io.DataLoader
+        ), "data_loader only accepts `paddle.io.DataLoader`."
+
         assert batch_size > 0, "The batch_size should be greater than 0."
         assert (
             algo in self._support_algo_type
@@ -615,29 +603,8 @@ def _load_model_data(self):
             for var_name in self._feed_list
         ]
 
-        if self._data_loader is not None:
-            self._batch_nums = (
-                self._batch_nums if self._batch_nums else len(self._data_loader)
-            )
-            return
-        self._data_loader = reader.DataLoader.from_generator(
-            feed_list=feed_vars, capacity=3 * self._batch_size, iterable=True
-        )
-        if self._sample_generator is not None:
-            self._data_loader.set_sample_generator(
-                self._sample_generator,
-                batch_size=self._batch_size,
-                drop_last=True,
-                places=self._place,
-            )
-        elif self._batch_generator is not None:
-            self._data_loader.set_batch_generator(
-                self._batch_generator, places=self._place
-            )
         self._batch_nums = (
-            self._batch_nums
-            if self._batch_nums
-            else len(list(self._data_loader))
+            self._batch_nums if self._batch_nums else len(self._data_loader)
         )
 
     def _optimize_fp32_model(self):

test/quantization/test_post_training_quantization_mnist.py

@@ -30,6 +30,23 @@
 np.random.seed(0)
 
 
+class TransedMnistDataSet(paddle.io.Dataset):
+    def __init__(self, mnist_data):
+        self.mnist_data = mnist_data
+
+    def __getitem__(self, idx):
+        img = (
+            np.array(self.mnist_data[idx][0])
+            .astype('float32')
+            .reshape(1, 28, 28)
+        )
+        batch = img / 127.5 - 1.0
+        return {"img": batch}
+
+    def __len__(self):
+        return len(self.mnist_data)
+
+
 class TestPostTrainingQuantization(unittest.TestCase):
     def setUp(self):
         self.root_path = tempfile.TemporaryDirectory()
@@ -217,14 +234,27 @@ def generate_quantized_model(
     ):
         place = paddle.CPUPlace()
         exe = paddle.static.Executor(place)
-        val_reader = paddle.dataset.mnist.train()
+
+        train_dataset = paddle.vision.datasets.MNIST(
+            mode='train', transform=None
+        )
+        train_dataset = TransedMnistDataSet(train_dataset)
+        BatchSampler = paddle.io.BatchSampler(
+            train_dataset, batch_size=batch_size
+        )
+        val_data_generator = paddle.io.DataLoader(
+            train_dataset,
+            batch_sampler=BatchSampler,
+            places=paddle.static.cpu_places(),
+        )
 
         ptq = PostTrainingQuantization(
             executor=exe,
             model_dir=model_path,
             model_filename=model_filename,
             params_filename=params_filename,
-            sample_generator=val_reader,
+            sample_generator=None,
+            data_loader=val_data_generator,
             batch_size=batch_size,
             batch_nums=batch_nums,
             algo=algo,

test/quantization/test_post_training_quantization_while.py

@@ -29,6 +29,23 @@
 np.random.seed(0)
 
 
+class TransedMnistDataSet(paddle.io.Dataset):
+    def __init__(self, mnist_data):
+        self.mnist_data = mnist_data
+
+    def __getitem__(self, idx):
+        img = (
+            np.array(self.mnist_data[idx][0])
+            .astype('float32')
+            .reshape(1, 28, 28)
+        )
+        batch = img / 127.5 - 1.0
+        return {"x": batch}
+
+    def __len__(self):
+        return len(self.mnist_data)
+
+
 class TestPostTrainingQuantization(unittest.TestCase):
     def setUp(self):
         self.download_path = 'int8/download'
@@ -132,28 +149,30 @@ def generate_quantized_model(
         is_optimize_model=False,
         batch_size=10,
         batch_nums=10,
-        is_data_loader=False,
     ):
         place = paddle.CPUPlace()
         exe = paddle.static.Executor(place)
-        val_reader = paddle.dataset.mnist.train()
 
-        def val_data_generator():
-            batches = []
-            for data in val_reader():
-                batches.append(data[0].reshape(1, 28, 28))
-                if len(batches) == batch_size:
-                    batches = np.asarray(batches)
-                    yield {"x": batches}
-                    batches = []
+        train_dataset = paddle.vision.datasets.MNIST(
+            mode='train', transform=None
+        )
+        train_dataset = TransedMnistDataSet(train_dataset)
+        BatchSampler = paddle.io.BatchSampler(
+            train_dataset, batch_size=batch_size
+        )
+        val_data_generator = paddle.io.DataLoader(
+            train_dataset,
+            batch_sampler=BatchSampler,
+            places=paddle.static.cpu_places(),
+        )
 
         ptq = PostTrainingQuantization(
             executor=exe,
             model_dir=model_path,
             model_filename='model.pdmodel',
             params_filename='model.pdiparams',
-            sample_generator=val_reader if not is_data_loader else None,
-            data_loader=val_data_generator if is_data_loader else None,
+            sample_generator=None,
+            data_loader=val_data_generator,
             batch_size=batch_size,
             batch_nums=batch_nums,
             algo=algo,
@@ -183,7 +202,6 @@ def run_test(
         batch_size=10,
         infer_iterations=10,
         quant_iterations=5,
-        is_data_loader=False,
     ):
         origin_model_path = self.download_model(data_url, data_md5, model_name)
 
@@ -210,7 +228,6 @@ def run_test(
             is_optimize_model,
             batch_size,
             quant_iterations,
-            is_data_loader=is_data_loader,
         )
 
         print(
@@ -442,7 +459,6 @@ def test_post_training_abs_max(self):
             batch_size,
             infer_iterations,
             quant_iterations,
-            is_data_loader=True,
         )