add fp16 pool2d support

paddle/fluid/operators/pool_cudnn_op.cu.cc

@@ -78,7 +78,8 @@ class PoolCUDNNOpKernel : public framework::OpKernel<T> {
 
     // ------------------- cudnn pool algorithm ---------------------
     auto handle = ctx.cuda_device_context().cudnn_handle();
-    T alpha = 1.0f, beta = 0.0f;
+    typename platform::CudnnDataType<T>::ScalingParamType alpha = 1.0f,
+                                                          beta = 0.0f;
 
     PADDLE_ENFORCE(platform::dynload::cudnnPoolingForward(
         handle, cudnn_pool_desc, &alpha, cudnn_input_desc, input_data, &beta,
@@ -144,7 +145,8 @@ class PoolCUDNNGradOpKernel : public framework::OpKernel<T> {
 
     // ------------------- cudnn pool algorithm ---------------------
     auto handle = ctx.cuda_device_context().cudnn_handle();
-    T alpha = 1.0f, beta = 0.0f;
+    typename platform::CudnnDataType<T>::ScalingParamType alpha = 1.0f,
+                                                          beta = 0.0f;
 
     if (input_grad) {
       T *input_grad_data = input_grad->mutable_data<T>(ctx.GetPlace());
@@ -162,17 +164,19 @@ class PoolCUDNNGradOpKernel : public framework::OpKernel<T> {
 }  // namespace paddle
 
 namespace ops = paddle::operators;
+namespace plat = paddle::platform;
 
-REGISTER_OP_KERNEL(pool2d, CUDNN, ::paddle::platform::CUDAPlace,
+REGISTER_OP_KERNEL(pool2d, CUDNN, plat::CUDAPlace,
                    ops::PoolCUDNNOpKernel<float>,
-                   ops::PoolCUDNNOpKernel<double>);
-REGISTER_OP_KERNEL(pool2d_grad, CUDNN, ::paddle::platform::CUDAPlace,
+                   ops::PoolCUDNNOpKernel<double>,
+                   ops::PoolCUDNNOpKernel<plat::float16>);
+REGISTER_OP_KERNEL(pool2d_grad, CUDNN, plat::CUDAPlace,
                    ops::PoolCUDNNGradOpKernel<float>,
                    ops::PoolCUDNNGradOpKernel<double>);
 
-REGISTER_OP_KERNEL(pool3d, CUDNN, ::paddle::platform::CUDAPlace,
+REGISTER_OP_KERNEL(pool3d, CUDNN, plat::CUDAPlace,
                    ops::PoolCUDNNOpKernel<float>,
                    ops::PoolCUDNNOpKernel<double>);
-REGISTER_OP_KERNEL(pool3d_grad, CUDNN, ::paddle::platform::CUDAPlace,
+REGISTER_OP_KERNEL(pool3d_grad, CUDNN, plat::CUDAPlace,
                    ops::PoolCUDNNGradOpKernel<float>,
                    ops::PoolCUDNNGradOpKernel<double>);

paddle/fluid/operators/pool_op.cc

@@ -124,11 +124,15 @@ framework::OpKernelType PoolOpGrad::GetExpectedKernelType(
   }
 #endif
 
+  auto input_data_type = framework::ToDataType(ctx.Input<Tensor>("X")->type());
+  if (input_data_type == framework::proto::VarType::FP16) {
+    PADDLE_ENFORCE_EQ(library_, framework::LibraryType::kCUDNN,
+                      "float16 can only be used when CUDNN is used");
+  }
   std::string data_format = ctx.Attr<std::string>("data_format");
   framework::DataLayout layout_ = framework::StringToDataLayout(data_format);
-  return framework::OpKernelType(
-      framework::ToDataType(ctx.Input<Tensor>("X")->type()), ctx.GetPlace(),
-      layout_, library_);
+  return framework::OpKernelType(input_data_type, ctx.GetPlace(), layout_,
+                                 library_);
 }
 
 Pool2dOpMaker::Pool2dOpMaker(OpProto *proto, OpAttrChecker *op_checker)

python/paddle/fluid/tests/unittests/op_test.py

@@ -483,9 +483,9 @@ class OpTest(unittest.TestCase):
             input: input numpy array
 
         Returns:
-            input: if the dtype of input is np.float16, its dtype will be
-                changed to np.uint16 so that the internal memory will be 
-                reinterpreted input as of dtype np.uint16. 
+            input: The dtype of input will be changed to np.uint16 if 
+                it is originally np.float16, such that the internal memory
+                of input will be reinterpreted as of dtype np.uint16. 
         """
         if input.dtype == np.float16:
             input.dtype = np.uint16

python/paddle/fluid/tests/unittests/test_conv2d_op.py

@@ -65,10 +65,10 @@ class TestConv2dOp(OpTest):
     def setUp(self):
         self.use_cudnn = False
         self.use_mkldnn = False
+        self.dtype = np.float32
         self.init_op_type()
         self.init_group()
         self.init_dilation()
-        self.init_data_type()
         self.init_test_case()
 
         conv2d_param = {
@@ -159,9 +159,6 @@ class TestConv2dOp(OpTest):
         f_c = self.input_size[1] / self.groups
         self.filter_size = [6, f_c, 3, 3]
 
-    def init_data_type(self):
-        self.dtype = np.float32
-
     def init_dilation(self):
         self.dilations = [1, 1]
 
@@ -246,8 +243,10 @@ class TestCUDNN(TestConv2dOp):
         self.op_type = "conv2d"
 
 
-class TestFP16CUDNN(TestCUDNN):
-    def init_data_type(self):
+class TestFP16CUDNN(TestConv2dOp):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "conv2d"
         self.dtype = np.float16
 
     def test_check_output(self):
@@ -263,8 +262,10 @@ class TestCUDNNWithPad(TestWithPad):
         self.op_type = "conv2d"
 
 
-class TestFP16CUDNNWithPad(TestCUDNNWithPad):
-    def init_data_type(self):
+class TestFP16CUDNNWithPad(TestWithPad):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "conv2d"
         self.dtype = np.float16
 
     def test_check_output(self):
@@ -280,8 +281,10 @@ class TestCUDNNWithStride(TestWithStride):
         self.op_type = "conv2d"
 
 
-class TestFP16CUDNNWithStride(TestCUDNNWithStride):
-    def init_data_type(self):
+class TestFP16CUDNNWithStride(TestWithStride):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "conv2d"
         self.dtype = np.float16
 
     def test_check_output(self):
@@ -297,8 +300,10 @@ class TestCUDNNWithGroup(TestWithGroup):
         self.op_type = "conv2d"
 
 
-class TestFP16CUDNNWithGroup(TestCUDNNWithGroup):
-    def init_data_type(self):
+class TestFP16CUDNNWithGroup(TestWithGroup):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "conv2d"
         self.dtype = np.float16
 
     def test_check_output(self):
@@ -314,8 +319,10 @@ class TestCUDNNWith1x1(TestWith1x1):
         self.op_type = "conv2d"
 
 
-class TestFP16CUDNNWith1x1(TestCUDNNWith1x1):
-    def init_data_type(self):
+class TestFP16CUDNNWith1x1(TestWith1x1):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "conv2d"
         self.dtype = np.float16
 
     def test_check_output(self):
@@ -331,8 +338,10 @@ class TestCUDNNWithInput1x1Filter1x1(TestWithInput1x1Filter1x1):
         self.op_type = "conv2d"
 
 
-class TestFP16CUDNNWithInput1x1Filter1x1(TestCUDNNWithInput1x1Filter1x1):
-    def init_data_type(self):
+class TestFP16CUDNNWithInput1x1Filter1x1(TestWithInput1x1Filter1x1):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "conv2d"
         self.dtype = np.float16
 
     def test_check_output(self):

python/paddle/fluid/tests/unittests/test_pool2d_op.py

@@ -80,6 +80,7 @@ class TestPool2d_Op(OpTest):
     def setUp(self):
         self.use_cudnn = False
         self.use_mkldnn = False
+        self.dtype = np.float32
         self.init_test_case()
         self.init_global_pool()
         self.init_op_type()
@@ -87,11 +88,11 @@ class TestPool2d_Op(OpTest):
         self.init_ceil_mode()
         if self.global_pool:
             self.paddings = [0 for _ in range(len(self.paddings))]
-        input = np.random.random(self.shape).astype("float32")
+        input = np.random.random(self.shape).astype(self.dtype)
         output = self.pool2D_forward_naive(input, self.ksize, self.strides,
                                            self.paddings, self.global_pool,
-                                           self.ceil_mode).astype("float32")
-        self.inputs = {'X': input}
+                                           self.ceil_mode).astype(self.dtype)
+        self.inputs = {'X': OpTest.np_dtype_to_fluid_dtype(input)}
 
         self.attrs = {
             'strides': self.strides,
@@ -105,7 +106,7 @@ class TestPool2d_Op(OpTest):
             'data_format': 'AnyLayout'  # TODO(dzhwinter) : should be fix latter
         }
 
-        self.outputs = {'Out': output.astype('float32')}
+        self.outputs = {'Out': output}
 
     def test_check_output(self):
         if self.use_cudnn:
@@ -115,6 +116,8 @@ class TestPool2d_Op(OpTest):
             self.check_output()
 
     def test_check_grad(self):
+        if self.dtype == np.float16:
+            return
         if self.use_cudnn and self.pool_type != "max":
             place = core.CUDAPlace(0)
             self.check_grad_with_place(
@@ -212,36 +215,114 @@ class TestCUDNNCase1(TestPool2d_Op):
         self.op_type = "pool2d"
 
 
+class TestFP16CUDNNCase1(TestPool2d_Op):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "pool2d"
+        self.dtype = np.float16
+
+    def test_check_output(self):
+        if core.is_compiled_with_cuda():
+            place = core.CUDAPlace(0)
+            if core.is_float16_supported(place):
+                self.check_output_with_place(place, atol=1e-3)
+
+
 class TestCUDNNCase2(TestCase1):
     def init_op_type(self):
         self.use_cudnn = True
         self.op_type = "pool2d"
 
 
+class TestFP16CUDNNCase2(TestCase1):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "pool2d"
+        self.dtype = np.float16
+
+    def test_check_output(self):
+        if core.is_compiled_with_cuda():
+            place = core.CUDAPlace(0)
+            if core.is_float16_supported(place):
+                self.check_output_with_place(place, atol=1e-3)
+
+
 class TestCUDNNCase3(TestCase2):
     def init_op_type(self):
         self.use_cudnn = True
         self.op_type = "pool2d"
 
 
+class TestFP16CUDNNCase3(TestCase2):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "pool2d"
+        self.dtype = np.float16
+
+    def test_check_output(self):
+        if core.is_compiled_with_cuda():
+            place = core.CUDAPlace(0)
+            if core.is_float16_supported(place):
+                self.check_output_with_place(place, atol=1e-3)
+
+
 class TestCUDNNCase4(TestCase3):
     def init_op_type(self):
         self.use_cudnn = True
         self.op_type = "pool2d"
 
 
+class TestFP16CUDNNCase4(TestCase3):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "pool2d"
+        self.dtype = np.float16
+
+    def test_check_output(self):
+        if core.is_compiled_with_cuda():
+            place = core.CUDAPlace(0)
+            if core.is_float16_supported(place):
+                self.check_output_with_place(place, atol=1e-3)
+
+
 class TestCUDNNCase5(TestCase4):
     def init_op_type(self):
         self.use_cudnn = True
         self.op_type = "pool2d"
 
 
+class TestFP16CUDNNCase5(TestCase4):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "pool2d"
+        self.dtype = np.float16
+
+    def test_check_output(self):
+        if core.is_compiled_with_cuda():
+            place = core.CUDAPlace(0)
+            if core.is_float16_supported(place):
+                self.check_output_with_place(place, atol=1e-3)
+
+
 class TestCUDNNCase6(TestCase5):
     def init_op_type(self):
         self.use_cudnn = True
         self.op_type = "pool2d"
 
 
+class TestFP16CUDNNCase6(TestCase5):
+    def init_op_type(self):
+        self.use_cudnn = True
+        self.op_type = "pool2d"
+        self.dtype = np.float16
+
+    def test_check_output(self):
+        if core.is_compiled_with_cuda():
+            place = core.CUDAPlace(0)
+            if core.is_float16_supported(place):
+                self.check_output_with_place(place, atol=1e-3)
+
+
 class TestCeilModeCase1(TestCUDNNCase1):
     def init_ceil_mode(self):
         self.ceil_mode = True