fix bug that asin/acos not support fp16 on gpu

mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/unary_op_impl.cu

@@ -1,5 +1,5 @@
 /**
- * Copyright 2019 Huawei Technologies Co., Ltd
+ * Copyright 2019-2020 Huawei Technologies Co., Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -111,7 +111,9 @@ __global__ void SinKernel(const half *input, half *output, const size_t count) {
 template <typename T>
 __global__ void AsinKernel(const T *input, T *output, const size_t count) {
   for (size_t i = blockIdx.x * blockDim.x + threadIdx.x; i < (count); i += blockDim.x * gridDim.x) {
-    output[i] = asinf(input[i]);
+    float inputf = static_cast<float>(input[i]);
+    T res = static_cast<T>(asinf(inputf));
+    output[i] = res;
   }
   return;
 }
@@ -132,7 +134,9 @@ __global__ void CosKernel(const half *input, half *output, const size_t count) {
 template <typename T>
 __global__ void ACosKernel(const T *input, T *output, const size_t count) {
   for (size_t i = blockIdx.x * blockDim.x + threadIdx.x; i < (count); i += blockDim.x * gridDim.x) {
-    output[i] = acosf(input[i]);
+    float inputf = static_cast<float>(input[i]);
+    T res = static_cast<T>(acosf(inputf));
+    output[i] = res;
   }
   return;
 }

mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/unary_op_impl.cuh

@@ -1,5 +1,5 @@
 /**
- * Copyright 2019 Huawei Technologies Co., Ltd
+ * Copyright 2019-2020 Huawei Technologies Co., Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

mindspore/ccsrc/backend/kernel_compiler/gpu/math/unary_op_gpu_kernel.cc

@@ -1,5 +1,5 @@
 /**
- * Copyright 2019 Huawei Technologies Co., Ltd
+ * Copyright 2019-2020 Huawei Technologies Co., Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -56,12 +56,16 @@ MS_REG_GPU_KERNEL_ONE(Sin, KernelAttr().AddInputAttr(kNumberTypeFloat16).AddOutp
                       UnaryOpGpuKernel, half)
 MS_REG_GPU_KERNEL_ONE(Asin, KernelAttr().AddInputAttr(kNumberTypeFloat32).AddOutputAttr(kNumberTypeFloat32),
                       UnaryOpGpuKernel, float)
+MS_REG_GPU_KERNEL_ONE(Asin, KernelAttr().AddInputAttr(kNumberTypeFloat16).AddOutputAttr(kNumberTypeFloat16),
+                      UnaryOpGpuKernel, half)
 MS_REG_GPU_KERNEL_ONE(Cos, KernelAttr().AddInputAttr(kNumberTypeFloat32).AddOutputAttr(kNumberTypeFloat32),
                       UnaryOpGpuKernel, float)
 MS_REG_GPU_KERNEL_ONE(Cos, KernelAttr().AddInputAttr(kNumberTypeFloat16).AddOutputAttr(kNumberTypeFloat16),
                       UnaryOpGpuKernel, half)
 MS_REG_GPU_KERNEL_ONE(ACos, KernelAttr().AddInputAttr(kNumberTypeFloat32).AddOutputAttr(kNumberTypeFloat32),
                       UnaryOpGpuKernel, float)
+MS_REG_GPU_KERNEL_ONE(ACos, KernelAttr().AddInputAttr(kNumberTypeFloat16).AddOutputAttr(kNumberTypeFloat16),
+                      UnaryOpGpuKernel, half)
 MS_REG_GPU_KERNEL_ONE(Abs, KernelAttr().AddInputAttr(kNumberTypeFloat32).AddOutputAttr(kNumberTypeFloat32),
                       UnaryOpGpuKernel, float)
 MS_REG_GPU_KERNEL_ONE(Abs, KernelAttr().AddInputAttr(kNumberTypeFloat16).AddOutputAttr(kNumberTypeFloat16),

mindspore/ccsrc/backend/kernel_compiler/gpu/math/unary_op_gpu_kernel.h

@@ -1,5 +1,5 @@
 /**
- * Copyright 2019 Huawei Technologies Co., Ltd
+ * Copyright 2019-2020 Huawei Technologies Co., Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

tests/st/ops/gpu/test_acos_op.py

@@ -29,3 +29,12 @@ def test_acos_fp32():
     output_ms = P.ACos()(Tensor(x_np))
     output_np = np.arccos(x_np)
     assert np.allclose(output_ms.asnumpy(), output_np)
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_acos_fp16():
+    x_np = np.array([0.74, 0.04, 0.30, 0.56]).astype(np.float16)
+    output_ms = P.ACos()(Tensor(x_np))
+    output_np = np.arccos(x_np)
+    assert np.allclose(output_ms.asnumpy(), output_np)

tests/st/ops/gpu/test_asin_op.py

@@ -29,3 +29,12 @@ def test_asin_fp32():
     output_ms = P.Asin()(Tensor(x_np))
     output_np = np.arcsin(x_np)
     assert np.allclose(output_ms.asnumpy(), output_np)
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_asin_fp16():
+    x_np = np.array([0.74, 0.04, 0.30, 0.56]).astype(np.float16)
+    output_ms = P.Asin()(Tensor(x_np))
+    output_np = np.arcsin(x_np)
+    assert np.allclose(output_ms.asnumpy(), output_np)