TheRock/rocm-systems/projects/hip-tests/catch/unit/kernel/hipLaunchBoundsBasic.cc

/*
 * Copyright (c) Advanced Micro Devices, Inc., or its affiliates.
 *
 * SPDX-License-Identifier: MIT
 */

#include <hip_test_common.hh>


constexpr size_t N = 1024;
int p_blockSize = 256;

__global__ void __launch_bounds__(256, 2) myKern(int* C, const int* A, int N) {
  int tid = (blockIdx.x * blockDim.x + threadIdx.x);

  if (tid < N) {
    C[tid] = A[tid];
  }
}
/**
* @addtogroup hipLaunchKernelGGL
* @{
* @ingroup KernelTest
* `void hipLaunchKernelGGL(F kernel, const dim3& numBlocks, const dim3& dimBlocks,
   std::uint32_t sharedMemBytes, hipStream_t stream, Args... args)` -
* Method to invocate kernel functions
*/

/**
 * Test Description
 * ------------------------
 * - Test case to check launch bounds via kernel call.

 * Test source
 * ------------------------
 * - catch/unit/kernel/launch_bounds.cc
 * Test requirements
 * ------------------------
 * - HIP_VERSION >= 5.6
 */

HIP_TEST_CASE(Unit_kernel_LaunchBounds_Functional) {
  size_t Nbytes = N * sizeof(int);
  int *A_d, *C_d, *A_h, *C_h;
  HIPCHECK(hipMalloc(&A_d, Nbytes));
  HIPCHECK(hipMalloc(&C_d, Nbytes));

  A_h = reinterpret_cast<int*>(malloc(Nbytes));
  C_h = reinterpret_cast<int*>(malloc(Nbytes));

  for (int i = 0; i < N; i++) {
    A_h[i] = i * 10;
    C_h[i] = 0x0;
  }
  int blocks = N / p_blockSize;

  HIPCHECK(hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice));
  HIPCHECK(hipGetLastError());
  hipLaunchKernelGGL(myKern, dim3(blocks), dim3(p_blockSize), 0, 0, C_d, A_d, N);

#ifdef __HIP_PLATFORM_NVIDIA__
  cudaFuncAttributes attrib;
  cudaFuncGetAttributes(&attrib, myKern);
  printf("binaryVersion = %d\n", attrib.binaryVersion);
  printf("cacheModeCA = %d\n", attrib.cacheModeCA);
  printf("constSizeBytes = %zu\n", attrib.constSizeBytes);
  printf("localSizeBytes = %zud\n", attrib.localSizeBytes);
  printf("maxThreadsPerBlock = %d\n", attrib.maxThreadsPerBlock);
  printf("numRegs = %d\n", attrib.numRegs);
  printf("ptxVersion = %d\n", attrib.ptxVersion);
  printf("sharedSizeBytes = %zud\n", attrib.sharedSizeBytes);
#endif

  HIPCHECK(hipDeviceSynchronize());
  HIPCHECK(hipGetLastError());
  HIPCHECK(hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost));
  HIPCHECK(hipDeviceSynchronize());

  for (int i = 0; i < N; i++) {
    int goldVal = i * 10;
    REQUIRE(C_h[i] == goldVal);
  }
  HIP_CHECK(hipFree(A_d));
  HIP_CHECK(hipFree(C_d));
  free(A_h);
  free(C_h);
}

/**
 * End doxygen group KernelTest.
 * @}
 */