[NPU] add sqrt op bridge and unit test (#2515)

test=develop

lite/kernels/npu/bridges/CMakeLists.txt

@@ -20,6 +20,7 @@ lite_cc_library(npu_bridge_concat_op SRCS concat_op.cc DEPS ${npu_bridge_deps})
 lite_cc_library(npu_bridge_shuffle_channel_op SRCS shuffle_channel_op.cc DEPS ${npu_bridge_deps})
 lite_cc_library(npu_bridge_pad2d_op SRCS pad2d_op.cc DEPS ${npu_bridge_deps})
 lite_cc_library(npu_bridge_square_op SRCS square_op.cc DEPS ${npu_bridge_deps})
+lite_cc_library(npu_bridge_sqrt_op SRCS sqrt_op.cc DEPS ${npu_bridge_deps})
 
 set(npu_bridges
         npu_bridge_registry
@@ -41,6 +42,7 @@ set(npu_bridges
         npu_bridge_shuffle_channel_op
         npu_bridge_pad2d_op
         npu_bridge_square_op
+        npu_bridge_sqrt_op
         CACHE INTERNAL "npu_bridges")
 
 set(npu_bridge_test_deps ${npu_bridges} ${npu_kernels} ${ops})
@@ -63,5 +65,6 @@ lite_cc_test(test_npu_bridge_concat_op SRCS concat_op_test.cc test_helper.cc DEP
 lite_cc_test(test_npu_bridge_shuffle_channel_op SRCS shuffle_channel_op_test.cc test_helper.cc DEPS ${npu_bridge_test_deps})
 lite_cc_test(test_npu_bridge_pad2d_op SRCS pad2d_op_test.cc test_helper.cc DEPS ${npu_bridge_test_deps})
 lite_cc_test(test_npu_bridge_square_op SRCS square_op_test.cc test_helper.cc DEPS ${npu_bridge_test_deps})
+lite_cc_test(test_npu_bridge_sqrt_op SRCS sqrt_op_test.cc test_helper.cc DEPS ${npu_bridge_test_deps})
 
 message(STATUS "+++++ npu_bridges: ${npu_bridges}")

lite/kernels/npu/bridges/sqrt_op.cc

+// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// 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 "lite/backends/npu/builder.h"
+#include "lite/kernels/npu/bridges/registry.h"
+
+namespace paddle {
+namespace lite {
+namespace kernels {
+namespace npu {
+namespace bridges {
+
+node_map_type SqrtConverter(const std::shared_ptr<lite::OpLite> sqrt_op,
+                            const node_map_type& inputs_map) {
+  auto scope = sqrt_op->scope();
+  auto op_info = sqrt_op->op_info();
+  auto op_type = op_info->Type();
+  auto unique_op_type = lite::npu::UniqueName(op_type);
+  LOG(INFO) << "[NPU] Converting " + op_type + "...";
+
+  std::shared_ptr<ge::op::Sqrt> sqrt_node =
+      std::make_shared<ge::op::Sqrt>(unique_op_type);
+
+  auto x_var_name = op_info->Input("X").front();
+
+  CHECK(inputs_map.count(x_var_name));
+  sqrt_node->set_input_x(*inputs_map.at(x_var_name));
+
+  lite::npu::OpList::Global().add(inputs_map.at(x_var_name));
+  lite::npu::OpList::Global().add(sqrt_node);
+
+  node_map_type outputs_map;
+  outputs_map[op_info->Output("Out").front()] = sqrt_node;
+  return outputs_map;
+}
+
+}  // namespace bridges
+}  // namespace npu
+}  // namespace kernels
+}  // namespace lite
+}  // namespace paddle
+
+REGISTER_NPU_BRIDGE(sqrt, paddle::lite::kernels::npu::bridges::SqrtConverter);

lite/kernels/npu/bridges/sqrt_op_test.cc

+// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// 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 <gtest/gtest.h>
+#include <cmath>
+#include "lite/core/op_registry.h"
+#include "lite/kernels/npu/bridges/registry.h"
+#include "lite/kernels/npu/bridges/test_helper.h"
+#include "lite/operators/activation_ops.h"
+
+namespace paddle {
+namespace lite {
+namespace kernels {
+namespace npu {
+namespace bridges {
+
+template <typename dtype>
+void sqrt_ref(const std::shared_ptr<operators::ActivationOp> op) {
+  Scope* scope = op->scope();
+  const OpInfo* op_info = op->op_info();
+
+  auto x = scope->FindTensor("x");
+  auto out = scope->FindMutableTensor("out_ref");
+  out->Resize(x->dims());
+  auto x_data = x->data<dtype>();
+  auto out_data = out->mutable_data<dtype>();
+
+  for (size_t i = 0; i < x->numel(); i++) {
+    out_data[i] = std::sqrtf(x_data[i]);
+  }
+}
+
+void test_sqrt(const std::vector<int64_t>& input_shape) {
+  // prepare input&output variables
+  Scope scope;
+  std::string x_var_name = "x";
+  std::string out_var_name = "out";
+  std::string out_ref_var_name = "out_ref";
+  auto* x = scope.NewTensor(x_var_name);
+  auto* out = scope.NewTensor(out_var_name);
+  auto* out_ref = scope.NewTensor(out_ref_var_name);
+  x->Resize(input_shape);
+
+  // initialize input&output data
+  FillTensor<float>(x, 0, 5);
+
+  // initialize op desc
+  cpp::OpDesc opdesc;
+  opdesc.SetType("sqrt");
+  opdesc.SetInput("X", {x_var_name});
+  opdesc.SetOutput("Out", {out_var_name});
+
+  // create and convert op to NPU model, then run it on NPU
+  auto op = CreateOp<operators::ActivationOp>(opdesc, &scope);
+  LauchOp(op, {x_var_name}, {out_var_name});
+
+  // execute reference implementation and save to output tensor
+  sqrt_ref<float>(op);
+
+  // compare results
+  auto* out_data = out->mutable_data<float>();
+  auto* out_ref_data = out_ref->mutable_data<float>();
+  for (int i = 0; i < out->dims().production(); i++) {
+    EXPECT_NEAR(out_data[i], out_ref_data[i], 1e-2);
+  }
+}
+
+TEST(NPUBridges, sqrt) {
+  test_sqrt({2});
+  test_sqrt({2, 3});
+  test_sqrt({1, 2, 3, 4});
+  test_sqrt({5, 6, 7, 8});
+}
+
+}  // namespace bridges
+}  // namespace npu
+}  // namespace kernels
+}  // namespace lite
+}  // namespace paddle
+
+USE_LITE_OP(sqrt);
+USE_NPU_BRIDGE(sqrt);

lite/operators/activation_ops.cc

@@ -117,6 +117,7 @@ REGISTER_LITE_OP(log, paddle::lite::operators::ActivationOp);
 REGISTER_LITE_OP(exp, paddle::lite::operators::ActivationOp);
 REGISTER_LITE_OP(floor, paddle::lite::operators::ActivationOp);
 REGISTER_LITE_OP(hard_sigmoid, paddle::lite::operators::ActivationOp);
+REGISTER_LITE_OP(sqrt, paddle::lite::operators::ActivationOp);
 REGISTER_LITE_OP(rsqrt, paddle::lite::operators::ActivationOp);
 REGISTER_LITE_OP(softsign, paddle::lite::operators::ActivationOp);