[CUDNN hardcode] Opt CUDNN hardcode of sequence_softmax (#47319)

* opt cudnn hardcode of sequence_softmax

* fix grad datatype

paddle/fluid/operators/sequence_ops/sequence_softmax_op.cc

@@ -16,6 +16,10 @@ limitations under the License. */
 
 #include <string>
 
+#if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP)
+#include "paddle/fluid/platform/device/gpu/gpu_dnn.h"
+#endif
+
 namespace paddle {
 namespace operators {
 
@@ -34,28 +38,20 @@ class SequenceSoftmaxOp : public framework::OperatorWithKernel {
  protected:
   framework::OpKernelType GetExpectedKernelType(
       const framework::ExecutionContext& ctx) const override {
-    // choose cudnn kernel if the runtime supported.
-    bool use_cudnn =
-        ctx.HasAttr("use_cudnn") ? ctx.Attr<bool>("use_cudnn") : false;
-    bool runtime_cudnn_support = false;
+    auto input_data_type = OperatorWithKernel::IndicateVarDataType(ctx, "X");
+    phi::DataLayout layout_ = DataLayout::kAnyLayout;
+    if (ctx.HasAttr("data_format")) {
+      layout_ = phi::StringToDataLayout(ctx.Attr<std::string>("data_format"));
+    }
 #if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP)
-    if (platform::is_gpu_place(ctx.GetPlace())) {
-      auto& dev_ctx = ctx.template device_context<phi::GPUContext>();
-      runtime_cudnn_support = dev_ctx.cudnn_handle() != nullptr ? true : false;
+    if (platform::CanCUDNNBeUsed(ctx)) {
+      return framework::OpKernelType(input_data_type,
+                                     ctx.GetPlace(),
+                                     layout_,
+                                     framework::LibraryType::kCUDNN);
     }
 #endif
-    framework::LibraryType library_ = framework::LibraryType::kPlain;
-    if (use_cudnn && runtime_cudnn_support) {
-      library_ = framework::LibraryType::kCUDNN;
-    }
-    std::string data_format = ctx.HasAttr("data_format")
-                                  ? ctx.Attr<std::string>("data_format")
-                                  : "AnyLayout";
-    return framework::OpKernelType(
-        OperatorWithKernel::IndicateVarDataType(ctx, "X"),
-        ctx.GetPlace(),
-        phi::StringToDataLayout(data_format),
-        library_);
+    return framework::OpKernelType(input_data_type, ctx.GetPlace(), layout_);
   }
 };
 
@@ -134,28 +130,20 @@ class SequenceSoftmaxGradOp : public framework::OperatorWithKernel {
  protected:
   framework::OpKernelType GetExpectedKernelType(
       const framework::ExecutionContext& ctx) const override {
-    // choose cudnn kernel if the runtime supported.
-    bool use_cudnn =
-        ctx.HasAttr("use_cudnn") ? ctx.Attr<bool>("use_cudnn") : false;
-    bool runtime_cudnn_support = false;
+    auto input_data_type = OperatorWithKernel::IndicateVarDataType(ctx, "Out");
+    phi::DataLayout layout_ = DataLayout::kAnyLayout;
+    if (ctx.HasAttr("data_format")) {
+      layout_ = phi::StringToDataLayout(ctx.Attr<std::string>("data_format"));
+    }
 #if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP)
-    if (platform::is_gpu_place(ctx.GetPlace())) {
-      auto& dev_ctx = ctx.template device_context<phi::GPUContext>();
-      runtime_cudnn_support = dev_ctx.cudnn_handle() != nullptr ? true : false;
+    if (platform::CanCUDNNBeUsed(ctx)) {
+      return framework::OpKernelType(input_data_type,
+                                     ctx.GetPlace(),
+                                     layout_,
+                                     framework::LibraryType::kCUDNN);
     }
 #endif
-    framework::LibraryType library_ = framework::LibraryType::kPlain;
-    if (use_cudnn && runtime_cudnn_support) {
-      library_ = framework::LibraryType::kCUDNN;
-    }
-    std::string data_format = ctx.HasAttr("data_format")
-                                  ? ctx.Attr<std::string>("data_format")
-                                  : "AnyLayout";
-    return framework::OpKernelType(
-        OperatorWithKernel::IndicateVarDataType(ctx, "Out"),
-        ctx.GetPlace(),
-        phi::StringToDataLayout(data_format),
-        library_);
+    return framework::OpKernelType(input_data_type, ctx.GetPlace(), layout_);
   }
 };