Implementing the fill constant op for the executor

paddle/operators/fill_constant_op.cc

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+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 "paddle/operators/fill_constant_op.h"
+
+namespace paddle {
+namespace operators {
+
+class FillConstantOp : public framework::OperatorWithKernel {
+ public:
+  using framework::OperatorWithKernel::OperatorWithKernel;
+
+ protected:
+  void InferShape(framework::InferShapeContext *ctx) const override {
+    PADDLE_ENFORCE(ctx->HasOutput("Out"),
+                   "Output(Out) of FillConstantOp should not be null.");
+    auto &shape = ctx->Attrs().Get<std::vector<int>>("shape");
+    std::vector<int64_t> shape_int64(shape.size(), 0);
+    std::transform(shape.begin(), shape.end(), shape_int64.begin(),
+                   [](int a) { return static_cast<int64_t>(a); });
+    auto dims = framework::make_ddim(shape_int64);
+    ctx->SetOutputDim("Out", dims);
+  }
+
+  framework::DataType IndicateDataType(
+      const framework::ExecutionContext &ctx) const override {
+    return static_cast<framework::DataType>(ctx.Attr<int>("dataType"));
+  }
+};
+
+class FillConstantOpMaker : public framework::OpProtoAndCheckerMaker {
+ public:
+  FillConstantOpMaker(framework::OpProto *proto,
+                      framework::OpAttrChecker *op_checker)
+      : framework::OpProtoAndCheckerMaker(proto, op_checker) {
+    AddAttr<int>("dataType",
+                 "(int, default 5 (FP32)) "
+                 "Output data type")
+        .SetDefault(framework::DataType::FP32);
+    AddAttr<std::vector<int>>("shape", "(vector<int>) The shape of the output");
+    AddAttr<float>("value", "(float, default 0) The value to be filled")
+        .SetDefault(0.0f);
+    AddOutput("Out",
+              "(Tensor) Tensor of specified shape will be filled "
+              "with the specified value");
+    AddComment(R"DOC(Fill up a variable with specified constant value.)DOC");
+  }
+};
+}  // namespace operators
+}  // namespace paddle
+
+namespace ops = paddle::operators;
+REGISTER_OP_WITHOUT_GRADIENT(fill_constant, ops::FillConstantOp,
+                             ops::FillConstantOpMaker);
+REGISTER_OP_CPU_KERNEL(
+    fill_constant,
+    ops::FillConstantOpKernel<paddle::platform::CPUPlace, float>);

paddle/operators/fill_constant_op.cu

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+   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. */
+
+#define EIGEN_USE_GPU
+#include "paddle/framework/op_registry.h"
+#include "paddle/operators/fill_constant_op.h"
+
+namespace ops = paddle::operators;
+REGISTER_OP_GPU_KERNEL(
+    fill_constant,
+    ops::FillConstantOpKernel<paddle::platform::GPUPlace, float>);

paddle/operators/fill_constant_op.h

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+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. */
+
+#pragma once
+#include "paddle/framework/eigen.h"
+#include "paddle/framework/op_registry.h"
+
+namespace paddle {
+namespace operators {
+
+template <typename Place, typename T>
+class FillConstantOpKernel : public framework::OpKernel<T> {
+ public:
+  void Compute(const framework::ExecutionContext& ctx) const override {
+    auto* out = ctx.Output<framework::Tensor>("Out");
+    out->mutable_data<T>(ctx.GetPlace());
+    auto value = ctx.Attr<T>("value");
+
+    auto out_eigen = framework::EigenVector<T>::Flatten(*out);
+    auto place = ctx.GetEigenDevice<Place>();
+    out_eigen.device(place) = out_eigen.constant(static_cast<T>(value));
+  }
+};
+
+}  // namespace operators
+}  // namespace paddle

python/paddle/v2/framework/tests/test_fill_constant_op.py

+import unittest
+import numpy as np
+from op_test import OpTest
+
+
+class TestFillConstantOp1(OpTest):
+    def setUp(self):
+        '''Test fill_constant op with specified value
+        '''
+        self.op_type = "fill_constant"
+
+        self.inputs = {}
+        self.attrs = {'shape': [123, 92], 'value': 3.8}
+        self.outputs = {'Out': np.full((123, 92), 3.8)}
+
+    def test_check_output(self):
+        self.check_output()
+
+
+class TestFillConstantOp2(OpTest):
+    def setUp(self):
+        '''Test fill_constant op with default value
+        '''
+        self.op_type = "fill_constant"
+
+        self.inputs = {}
+        self.attrs = {'shape': [123, 92]}
+        self.outputs = {'Out': np.full((123, 92), 0.0)}
+
+    def test_check_output(self):
+        self.check_output()
+
+
+if __name__ == "__main__":
+    unittest.main()