[MLU] add exp and exp_grad kernel (#43852)

paddle/fluid/operators/activation_op_mlu.cc

@@ -208,6 +208,54 @@ class LogMLUKernel : public framework::OpKernel<T> {
   }
 };
 
+template <typename T>
+class ExpMLUKernel : 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());
+
+    MLUCnnlTensorDesc input_desc(*input);
+    MLUCnnlTensorDesc output_desc(*output);
+    cnnlComputationPreference_t prefer = CNNL_COMPUTATION_HIGH_PRECISION;
+
+    MLUCnnl::Exp(ctx,
+                 prefer,
+                 input_desc.get(),
+                 GetBasePtr(input),
+                 output_desc.get(),
+                 GetBasePtr(output));
+  }
+};
+
+template <typename T>
+class ExpGradMLUKernel : public framework::OpKernel<T> {
+ public:
+  void Compute(const framework::ExecutionContext& ctx) const override {
+    auto* out = ctx.Input<Tensor>("Out");
+    auto* dout = ctx.Input<Tensor>(framework::GradVarName("Out"));
+    auto* dx = ctx.Output<Tensor>(framework::GradVarName("X"));
+    dx->mutable_data<T>(ctx.GetPlace());
+    MLUCnnlTensorDesc dout_desc(*dout);
+    MLUCnnlTensorDesc dx_desc(*dx);
+    MLUCnnlTensorDesc out_desc(*out);
+
+    MLUCnnlOpTensorDesc op_tensor_desc(
+        CNNL_OP_TENSOR_MUL, ToCnnlDataType<T>(), CNNL_NOT_PROPAGATE_NAN);
+
+    MLUCnnl::OpTensor(ctx,
+                      op_tensor_desc.get(),
+                      dout_desc.get(),
+                      GetBasePtr(dout),
+                      out_desc.get(),
+                      GetBasePtr(out),
+                      dx_desc.get(),
+                      GetBasePtr(dx),
+                      ToCnnlDataType<T>());
+  }
+};
+
 }  // namespace operators
 }  // namespace paddle
 
@@ -303,3 +351,11 @@ REGISTER_OP_MLU_KERNEL(
     log10,
     ops::LogMLUKernel<CNNL_LOG_10, float>,
     ops::LogMLUKernel<CNNL_LOG_10, paddle::platform::float16>);
+
+REGISTER_OP_MLU_KERNEL(exp,
+                       ops::ExpMLUKernel<float>,
+                       ops::ExpMLUKernel<paddle::platform::float16>);
+
+REGISTER_OP_MLU_KERNEL(exp_grad,
+                       ops::ExpGradMLUKernel<float>,
+                       ops::ExpGradMLUKernel<paddle::platform::float16>);

python/paddle/fluid/tests/unittests/mlu/test_exp_op_mlu.py

+#  Copyright (c) 2022 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()
+SEED = 2021
+
+
+class TestExp(OpTest):
+
+    def setUp(self):
+        self.set_mlu()
+        self.op_type = "exp"
+        self.place = paddle.MLUPlace(0)
+
+        self.init_dtype()
+        np.random.seed(SEED)
+        x = np.random.rand(20, 5).astype(self.dtype)
+        out = np.exp(x)
+
+        self.inputs = {'X': OpTest.np_dtype_to_fluid_dtype(x)}
+        self.attrs = {}
+        self.outputs = {'Out': out}
+
+    def set_mlu(self):
+        self.__class__.use_mlu = True
+
+    def init_dtype(self):
+        self.dtype = np.float32
+
+    def test_check_output(self):
+        self.check_output_with_place(self.place)
+
+    def test_check_grad(self):
+        self.check_grad_with_place(self.place, ['X'], 'Out')
+
+
+class TestExpFp16(OpTest):
+
+    def setUp(self):
+        self.set_mlu()
+        self.op_type = "exp"
+        self.place = paddle.MLUPlace(0)
+
+        self.init_dtype()
+        np.random.seed(SEED)
+        x = np.random.rand(20, 5).astype(self.dtype)
+        out = np.exp(x)
+
+        self.inputs = {'X': OpTest.np_dtype_to_fluid_dtype(x)}
+        self.attrs = {}
+        self.outputs = {'Out': out}
+
+    def set_mlu(self):
+        self.__class__.use_mlu = True
+        self.__class__.no_need_check_grad = True
+
+    def init_dtype(self):
+        self.dtype = np.float16
+
+    def test_check_output(self):
+        self.check_output_with_place(self.place)
+
+
+class TestExpNeg(OpTest):
+
+    def setUp(self):
+        self.set_mlu()
+        self.op_type = "exp"
+        self.place = paddle.MLUPlace(0)
+
+        self.init_dtype()
+        np.random.seed(SEED)
+        x = np.random.random([20, 5]).astype(self.dtype)
+        x -= 1
+        out = np.exp(x)
+
+        self.inputs = {'X': OpTest.np_dtype_to_fluid_dtype(x)}
+        self.attrs = {}
+        self.outputs = {'Out': out}
+
+    def set_mlu(self):
+        self.__class__.use_mlu = True
+
+    def init_dtype(self):
+        self.dtype = np.float32
+
+    def test_check_output(self):
+        self.check_output_with_place(self.place)
+
+
+if __name__ == '__main__':
+    unittest.main()