text: /*
  //@HEADER
  // ************************************************************************
  //
  //                        Kokkos v. 3.0
  //       Copyright (2020) National Technology & Engineering
  //               Solutions of Sandia, LLC (NTESS).
  //
  // Under the terms of Contract DE-NA0003525 with NTESS,
  // the U.S. Government retains certain rights in this software.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  // 1. Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  //
  // 2. Redistributions in binary form must reproduce the above copyright
  // notice, this list of conditions and the following disclaimer in the
  // documentation and/or other materials provided with the distribution.
  //
  // 3. Neither the name of the Corporation nor the names of the
  // contributors may be used to endorse or promote products derived from
  // this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY NTESS "AS IS" AND ANY
  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NTESS OR THE
  // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  // Questions? Contact Christian R. Trott (crtrott@sandia.gov)
  //
  // ************************************************************************
  //@HEADER
  */
  
  #include <Kokkos_Core.hpp>
  #include <cuda/TestCuda_Category.hpp>
  
  namespace Test {
  
  __global__ void offset(int* p) {
    int idx = blockIdx.x * blockDim.x + threadIdx.x;
    if (idx < 100) {
      p[idx] += idx;
    }
  }
  
  // Test whether allocations survive Kokkos initialize/finalize if done via Raw
  // Cuda.
  TEST(cuda, raw_cuda_interop) {
    int* p;
    cudaMalloc(&p, sizeof(int) * 100);
    Kokkos::InitArguments arguments{-1, -1, -1, false};
    Kokkos::initialize(arguments);
  
    Kokkos::View<int*, Kokkos::MemoryTraits<Kokkos::Unmanaged>> v(p, 100);
    Kokkos::deep_copy(v, 5);
  
    Kokkos::finalize();
  
    offset<<<100, 64>>>(p);
    CUDA_SAFE_CALL(cudaDeviceSynchronize());
  
    int* h_p = new int[100];
    cudaMemcpy(h_p, p, sizeof(int) * 100, cudaMemcpyDefault);
    CUDA_SAFE_CALL(cudaDeviceSynchronize());
    int64_t sum        = 0;
    int64_t sum_expect = 0;
    for (int i = 0; i < 100; i++) {
      sum += h_p[i];
      sum_expect += 5 + i;
    }
  
    ASSERT_EQ(sum, sum_expect);
  }
  }  // namespace Test
  