Move layer norm to phi (PaddlePaddle#40193)

* update

* fix bugs; test=develop

* update; test=develop

* fix test compile error; test=develop

* fix cpu compile error; test=develop

* fix test error; test=develo

* fix layer_norm_op plugin error; test=develop

* fix error; test=develop

* fix test bug; test=develop

* update; test=develop

* polish code; test=develop

* fix bugs; test=develop

* remove unused depency; test=develop

* polish code; test=develop

paddle/fluid/inference/tensorrt/convert/layer_norm_op.cc

@@ -11,7 +11,7 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License. */
-#include "paddle/fluid/operators/layer_norm_op.h"
+
 #include "paddle/fluid/inference/tensorrt/convert/op_converter.h"
 #include "paddle/fluid/inference/tensorrt/plugin/layer_norm_op_plugin.h"
 

paddle/fluid/inference/tensorrt/plugin/layer_norm_op_plugin.cu

@@ -17,7 +17,7 @@
 #include <vector>
 #include "glog/logging.h"
 #include "paddle/fluid/inference/tensorrt/plugin/layer_norm_op_plugin.h"
-#include "paddle/fluid/operators/layer_norm_op.h"
+#include "paddle/phi/kernels/layer_norm_kernel.h"
 
 namespace paddle {
 namespace inference {
@@ -83,7 +83,7 @@ int LayerNormPlugin::enqueue(int batch_size, const void *const *inputs,
   cudaMemcpyAsync(bias_d, bias_.data(), sizeof(float) * feature_size,
                   cudaMemcpyHostToDevice, stream);
 
-  paddle::operators::LayerNormDirectCUDAFunctor<float> layer_norm;
+  phi::LayerNormDirectCUDAFunctor<float> layer_norm;
   layer_norm(stream, input, input_shape, bias_d, scale_d, output, mean_d,
              variance_d, begin_norm_axis, eps);
   return cudaGetLastError() != cudaSuccess;
@@ -177,7 +177,7 @@ int LayerNormPluginDynamic::enqueue(
     cudaMemcpyAsync(bias_d, bias_.data(), sizeof(float) * feature_size,
                     cudaMemcpyHostToDevice, stream);
 
-    paddle::operators::LayerNormDirectCUDAFunctor<float> layer_norm;
+    phi::LayerNormDirectCUDAFunctor<float> layer_norm;
     layer_norm(stream, input, input_shape, bias_d, scale_d, output, mean_d,
                variance_d, begin_norm_axis, eps);
   } else {

paddle/fluid/operators/fused/fused_dropout_test.h

@@ -25,14 +25,16 @@ limitations under the License. */
 #include "paddle/fluid/memory/memory.h"
 #include "paddle/fluid/operators/layer_norm_kernel.cu.h"
 #include "paddle/fluid/string/printf.h"
+#include "paddle/phi/backends/gpu/gpu_context.h"
 #include "paddle/phi/kernels/funcs/math_function.h"
+#include "paddle/phi/kernels/layer_norm_kernel.h"
 
 namespace framework = paddle::framework;
 namespace platform = paddle::platform;
 namespace memory = paddle::memory;
 
 USE_OP_ITSELF(dropout);
-USE_OP(layer_norm);
+USE_OP_ITSELF(layer_norm);
 
 template <typename T>
 using CudnnDataType = platform::CudnnDataType<T>;
@@ -136,18 +138,23 @@ void LayerNorm(const std::vector<LayerNormParamType<T>> &scale,
                const platform::CUDADeviceContext &ctx) {
   framework::Scope scope;
   auto place = ctx.GetPlace();
+  paddle::optional<const framework::LoDTensor &> scale_opt = paddle::none;
   if (scale.size() > 0) {
     auto var_scale = scope.Var("Scale");
     auto tensor_scale = var_scale->GetMutable<framework::LoDTensor>();
     framework::TensorFromVector(scale, ctx, tensor_scale);
     tensor_scale->Resize({cols});
+    scale_opt = *tensor_scale;
   }
 
+  paddle::optional<const framework::LoDTensor &> bias_opt = paddle::none;
   if (bias.size() > 0) {
     auto var_bias = scope.Var("Bias");
     auto tensor_bias = var_bias->GetMutable<framework::LoDTensor>();
     framework::TensorFromVector(bias, ctx, tensor_bias);
     tensor_bias->Resize({cols});
+
+    bias_opt = *tensor_bias;
   }
 
   auto var_x = scope.Var("X");
@@ -157,20 +164,19 @@ void LayerNorm(const std::vector<LayerNormParamType<T>> &scale,
 
   auto var_y = scope.Var("Y");
   auto tensor_y = var_y->GetMutable<framework::LoDTensor>();
+  tensor_y->Resize({rows, cols});
 
   auto var_mean = scope.Var("Mean");
   auto tensor_mean = var_mean->GetMutable<framework::LoDTensor>();
+  tensor_mean->Resize({rows});
 
   auto var_variance = scope.Var("Variance");
   auto tensor_variance = var_variance->GetMutable<framework::LoDTensor>();
-
-  framework::AttributeMap attrs;
-  attrs.insert({"epsilon", epsilon});
-
-  auto op = framework::OpRegistry::CreateOp(
-      "layer_norm", {{"X", {"X"}}, {"Scale", {"Scale"}}, {"Bias", {"Bias"}}},
-      {{"Y", {"Y"}}, {"Mean", {"Mean"}}, {"Variance", {"Variance"}}}, attrs);
-  op->Run(scope, place);
+  tensor_variance->Resize({rows});
+  ctx.Wait();
+  phi::LayerNormKernel<T>(static_cast<const phi::GPUContext &>(ctx), *tensor_x,
+                          scale_opt, bias_opt, 1e-5, 1, false, tensor_y,
+                          tensor_mean, tensor_variance);
   framework::TensorToVector(*tensor_y, ctx, y);
   framework::TensorToVector(*tensor_mean, ctx, means);
   framework::TensorToVector(*tensor_variance, ctx, vars);

paddle/fluid/operators/fused/fused_layernorm_residual_dropout_bias_test.cu

@@ -198,7 +198,6 @@ struct TestFusedLayernormResidualDropoutBias {
             residual_vec[i * cols + j] + out2[i * cols + j];
       }
     }
-
     LayerNorm<T>(scale_vec, layernorm_bias_vec, correct_out, &correct_means,
                  &correct_vars, &correct_layernorm_out, epsilon, rows, cols,
                  *ctx);

paddle/fluid/operators/layer_norm_kernel.cu.h

@@ -758,12 +758,14 @@ __global__ __launch_bounds__(THREADS_PER_CTA) void ln_bwd_1024_final_kernel(
 */
 template <typename T, typename U, typename ScaleT = U,
           typename MaskType = uint8_t>
-void ln_bwd_1024_kernel_driver(
-    const platform::CUDADeviceContext &dev_ctx, const int rows, const int cols,
-    float epsilon, const T *x_ptr, const ScaleT *scale_ptr, const U *mean_ptr,
-    const U *var_ptr, const T *dout_ptr, T *dx_ptr, ScaleT *dscale_ptr,
-    ScaleT *dbias_ptr, const MaskType *mask_ptr = nullptr,
-    T factor = static_cast<T>(0), T *d_dropout_src_ptr = nullptr) {
+void ln_bwd_1024_kernel_driver(const phi::GPUContext &dev_ctx, const int rows,
+                               const int cols, float epsilon, const T *x_ptr,
+                               const ScaleT *scale_ptr, const U *mean_ptr,
+                               const U *var_ptr, const T *dout_ptr, T *dx_ptr,
+                               ScaleT *dscale_ptr, ScaleT *dbias_ptr,
+                               const MaskType *mask_ptr = nullptr,
+                               T factor = static_cast<T>(0),
+                               T *d_dropout_src_ptr = nullptr) {
   auto stream = dev_ctx.stream();
   if (cols == 1024) {
     // step-1: compute dx and reduced part results of dscale and dbias.
@@ -1334,8 +1336,7 @@ static void LayerNormBackward(
     const U *mean, const U *var, T *d_x,
     LayerNormScaleBiasT<T, U, ScaleBiasWithSameTypeX> *d_scale,
     LayerNormScaleBiasT<T, U, ScaleBiasWithSameTypeX> *d_bias, float epsilon,
-    int64_t batch_size, int64_t feature_size,
-    const platform::CUDADeviceContext &dev_ctx) {
+    int64_t batch_size, int64_t feature_size, const phi::GPUContext &dev_ctx) {
   auto stream = dev_ctx.stream();
 #ifdef __HIPCC__
   const int kMaxBlockDim = 256;

paddle/fluid/operators/layer_norm_op.cc

@@ -12,10 +12,9 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License. */
 
-#include "paddle/fluid/operators/layer_norm_op.h"
-
 #include <memory>
 #include <string>
+#include "paddle/fluid/framework/op_registry.h"
 
 #ifdef PADDLE_WITH_MKLDNN
 #include "paddle/fluid/platform/mkldnn_helper.h"
@@ -278,10 +277,3 @@ REGISTER_OPERATOR(layer_norm, ops::LayerNormOp, ops::LayerNormOpMaker,
                   ops::LayerNormGradOpMaker<paddle::imperative::OpBase>);
 REGISTER_OPERATOR(layer_norm_grad, ops::LayerNormGradOp,
                   ops::LayerNormGradNoNeedBufferVarInferer);
-REGISTER_OP_CPU_KERNEL(
-    layer_norm, ops::LayerNormKernel<paddle::platform::CPUDeviceContext, float>,
-    ops::LayerNormKernel<paddle::platform::CPUDeviceContext, double>);
-REGISTER_OP_CPU_KERNEL(
-    layer_norm_grad,
-    ops::LayerNormGradKernel<paddle::platform::CPUDeviceContext, float>,
-    ops::LayerNormGradKernel<paddle::platform::CPUDeviceContext, double>);