[NPU] add reduce_mean_op_npu and test (#34053)

* add reduce_mean_op_npu and test

* remove skip.If

* update

paddle/fluid/operators/reduce_ops/reduce_mean_op_npu.cc

+/* Copyright (c) 2021 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 "paddle/fluid/operators/reduce_ops/reduce_mean_op.h"
+#include "paddle/fluid/operators/elementwise/elementwise_npu.h"
+#include "paddle/fluid/operators/npu_op_runner.h"
+
+namespace paddle {
+namespace operators {
+
+template <typename T>
+class NPUReduceMeanOpKernel : public framework::OpKernel<T> {
+ public:
+  void Compute(const framework::ExecutionContext& ctx) const override {
+    auto* input = ctx.Input<Tensor>("X");
+    auto* output = ctx.Output<Tensor>("Out");
+    output->mutable_data<T>(ctx.GetPlace());
+
+    bool reduce_all = ctx.Attr<bool>("reduce_all");
+    auto dims = ctx.Attr<std::vector<int>>("dim");
+    bool keep_dim = ctx.Attr<bool>("keep_dim");
+
+    auto input_dims_vec = framework::vectorize(input->dims());
+    if (reduce_all) {
+      dims.clear();
+      for (size_t i = 0; i < input_dims_vec.size(); i++) {
+        dims.push_back(static_cast<int>(i));
+      }
+    }
+
+    const auto& runner = NpuOpRunner("ReduceMeanD", {*input}, {*output},
+                                     {{"axes", dims}, {"keep_dims", keep_dim}});
+    auto stream =
+        ctx.template device_context<paddle::platform::NPUDeviceContext>()
+            .stream();
+    runner.Run(stream);
+  }
+};
+
+template <typename T>
+class NPUReduceMeanGradOpKernel : public framework::OpKernel<T> {
+ public:
+  void Compute(const framework::ExecutionContext& ctx) const override {
+    auto* input = ctx.Input<Tensor>("X");
+    auto* output_grad = ctx.Input<Tensor>(framework::GradVarName("Out"));
+    auto* input_grad = ctx.Output<Tensor>(framework::GradVarName("X"));
+    input_grad->mutable_data<T>(ctx.GetPlace());
+
+    bool reduce_all = ctx.Attr<bool>("reduce_all");
+    auto reduce_dims = ctx.Attr<std::vector<int>>("dim");
+    auto input_dims_vec = framework::vectorize(input->dims());
+
+    int reduce_numel = 1;
+    if (reduce_all) {
+      reduce_dims.clear();
+      for (size_t d = 0; d < input_dims_vec.size(); ++d) {
+        reduce_dims.push_back(static_cast<int>(d));
+      }
+    }
+    for (auto& d : reduce_dims) {
+      if (d < 0) {
+        d = d + input_dims_vec.size();
+      }
+      reduce_numel *= input_dims_vec[d];
+    }
+
+    const auto& runner =
+        NpuOpRunner("FillV2D", {}, {*input_grad},
+                    {{"value", 1.0f / static_cast<float>(reduce_numel)},
+                     {"dims", input_dims_vec}});
+    auto stream =
+        ctx.template device_context<paddle::platform::NPUDeviceContext>()
+            .stream();
+    runner.Run(stream);
+
+    Tensor transformed_input_grad, transformed_out_grad;
+    Tensor tmp_output_grad;
+    auto tmp_output_dims_vec = input_dims_vec;
+    for (auto d : reduce_dims) {
+      tmp_output_dims_vec[d] = 1;
+    }
+    tmp_output_grad.ShareDataWith(*output_grad);
+    tmp_output_grad.Resize(framework::make_ddim(tmp_output_dims_vec));
+    auto& dev_ctx =
+        ctx.template device_context<paddle::platform::NPUDeviceContext>();
+    NpuElementWiseOpBroadcast<T>(dev_ctx, input_grad, &tmp_output_grad, 0,
+                                 &transformed_input_grad,
+                                 &transformed_out_grad);
+    const auto& runner2 =
+        NpuOpRunner("Mul", {transformed_input_grad, transformed_out_grad},
+                    {*input_grad}, {});
+    runner2.Run(stream);
+  }
+};
+}  // namespace operators
+}  // namespace paddle
+
+namespace ops = paddle::operators;
+namespace plat = paddle::platform;
+
+REGISTER_OP_NPU_KERNEL(reduce_mean, ops::NPUReduceMeanOpKernel<float>);
+REGISTER_OP_NPU_KERNEL(reduce_mean_grad, ops::NPUReduceMeanGradOpKernel<float>);

python/paddle/fluid/tests/unittests/npu/test_reduce_mean_op_npu.py

+#  Copyright (c) 2021 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.
+
+from __future__ import print_function
+
+import numpy as np
+import unittest
+import sys
+sys.path.append("..")
+from op_test import OpTest
+import paddle
+import paddle.fluid as fluid
+
+paddle.enable_static()
+
+
+class TestMeanOp(OpTest):
+    def set_npu(self):
+        self.__class__.use_npu = True
+
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.inputs = {'X': np.random.random((5, 6, 10)).astype("float32")}
+        self.outputs = {'Out': self.inputs['X'].mean(axis=0)}
+
+    def test_check_output(self):
+        self.check_output_with_place(paddle.NPUPlace(0))
+
+    def test_check_grad(self):
+        self.check_grad_with_place(paddle.NPUPlace(0), ['X'], 'Out')
+
+
+class TestMeanOp5D(TestMeanOp):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.inputs = {
+            'X': np.random.random((1, 2, 5, 6, 10)).astype("float32")
+        }
+        self.outputs = {'Out': self.inputs['X'].mean(axis=0)}
+
+
+class TestMeanOp6D(TestMeanOp):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.inputs = {
+            'X': np.random.random((1, 1, 2, 5, 6, 10)).astype("float32")
+        }
+        self.outputs = {'Out': self.inputs['X'].mean(axis=0)}
+
+
+class TestMeanOp8D(TestMeanOp):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.inputs = {
+            'X': np.random.random((1, 3, 1, 2, 1, 4, 3, 10)).astype("float32")
+        }
+        self.attrs = {'dim': (0, 3)}
+        self.outputs = {'Out': self.inputs['X'].mean(axis=(0, 3))}
+
+
+class Test1DReduce(TestMeanOp):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.inputs = {'X': np.random.random(120).astype("float32")}
+        self.outputs = {'Out': self.inputs['X'].mean(axis=0)}
+
+
+class Test2DReduce0(Test1DReduce):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.attrs = {'dim': [0]}
+        self.inputs = {'X': np.random.random((20, 10)).astype("float32")}
+        self.outputs = {'Out': self.inputs['X'].mean(axis=0)}
+
+
+class Test2DReduce1(Test1DReduce):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.attrs = {'dim': [1]}
+        self.inputs = {'X': np.random.random((20, 10)).astype("float32")}
+        self.outputs = {
+            'Out': self.inputs['X'].mean(axis=tuple(self.attrs['dim']))
+        }
+
+
+class Test3DReduce0(Test1DReduce):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.attrs = {'dim': [1]}
+        self.inputs = {'X': np.random.random((5, 6, 7)).astype("float32")}
+        self.outputs = {
+            'Out': self.inputs['X'].mean(axis=tuple(self.attrs['dim']))
+        }
+
+
+class Test3DReduce1(Test1DReduce):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.attrs = {'dim': [2]}
+        self.inputs = {'X': np.random.random((5, 6, 7)).astype("float32")}
+        self.outputs = {
+            'Out': self.inputs['X'].mean(axis=tuple(self.attrs['dim']))
+        }
+
+
+class Test3DReduce2(Test1DReduce):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.attrs = {'dim': [-2]}
+        self.inputs = {'X': np.random.random((5, 6, 7)).astype("float32")}
+        self.outputs = {
+            'Out': self.inputs['X'].mean(axis=tuple(self.attrs['dim']))
+        }
+
+
+class Test3DReduce3(Test1DReduce):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.attrs = {'dim': [1, 2]}
+        self.inputs = {'X': np.random.random((5, 6, 7)).astype("float32")}
+        self.outputs = {
+            'Out': self.inputs['X'].mean(axis=tuple(self.attrs['dim']))
+        }
+
+
+class TestKeepDimReduce(Test1DReduce):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.inputs = {'X': np.random.random((5, 6, 10)).astype("float32")}
+        self.attrs = {'dim': [1], 'keep_dim': True}
+        self.outputs = {
+            'Out': self.inputs['X'].mean(
+                axis=tuple(self.attrs['dim']), keepdims=self.attrs['keep_dim'])
+        }
+
+
+class TestKeepDim8DReduce(Test1DReduce):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.inputs = {
+            'X': np.random.random((2, 5, 3, 2, 2, 3, 4, 2)).astype("float32")
+        }
+        self.attrs = {'dim': (3, 4, 5), 'keep_dim': True}
+        self.outputs = {
+            'Out': self.inputs['X'].mean(
+                axis=tuple(self.attrs['dim']), keepdims=self.attrs['keep_dim'])
+        }
+
+
+class TestReduceAll(Test1DReduce):
+    def setUp(self):
+        self.set_npu()
+        self.op_type = "reduce_mean"
+        self.inputs = {'X': np.random.random((5, 6, 2, 10)).astype("float32")}
+        self.attrs = {'reduce_all': True}
+        self.outputs = {'Out': self.inputs['X'].mean()}
+
+
+if __name__ == '__main__':
+    unittest.main()