rocm-systems/catch/unit/streamperthread/hipStreamPerThread_Basic.cc

/*
Copyright (c) 2021 Advanced Micro Devices, Inc. All rights reserved.
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The above copyright notice and this permission notice shall be included in
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IMPLIED, INNCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
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THE SOFTWARE.
*/

#include <hip_test_common.hh>

#define MEM_SIZE (1024*1024*32)
#define SEED 5

constexpr unsigned int MAX_THREAD_CNT = 10;

__global__ void copy_kernl(int* devPtr) {
  for (int i = 0; i < MEM_SIZE; ++i) {
    devPtr[i] = (i+1) + SEED;
  }
}

TEST_CASE("Unit_hipStreamPerThread_Basic") {
  constexpr int size = sizeof(int) * MEM_SIZE;
  int* hostMem = nullptr;
  int* devMem = nullptr;

  HIP_CHECK(hipHostMalloc(&hostMem, size));
  HIP_CHECK(hipMalloc(&devMem, size));

  // Init host mem with different values
  for (int i = 0; i < MEM_SIZE; ++i) {
    hostMem[i] = i;
  }

  /*
   hipStreamPerThread is an implicit stream which works independent of null stream.
   Null stream synchronize will account hipStreamPerThread into account.
   test scenario: Launch kernel + Async mem copy on hipStreamPerThread and call synchronize on null stream.
   Result : Null stream synchronize should sync hipStreamPerThread as well
   */
  copy_kernl<<<1, 1, 0, hipStreamPerThread>>>(devMem);

  HIP_CHECK(hipMemcpyAsync(hostMem, devMem, size, hipMemcpyDeviceToHost, hipStreamPerThread));

  HIP_CHECK(hipStreamSynchronize(0));

  // validate result
  for (int i = MEM_SIZE-1; i >= 0; --i) {
    CHECK(hostMem[i] == (i+1+SEED));
  }

  // Clean-up
  HIP_CHECK(hipHostFree(hostMem));
  HIP_CHECK(hipFree(devMem));

}

TEST_CASE("Unit_hipStreamPerThread_StreamQuery") {
  std::vector<std::thread> threads(MAX_THREAD_CNT);

  for (auto &th : threads) {
    th = std::thread([](){HIP_CHECK(hipStreamQuery(hipStreamPerThread));});
  }

  for (auto& th : threads) {
    th.join();
  }
  REQUIRE(true);
}

TEST_CASE("Unit_hipStreamPerThread_StreamSynchronize") {
  constexpr unsigned int MAX_THREAD_CNT = 10;
  std::vector<std::thread> threads(MAX_THREAD_CNT);

  for (auto& th : threads) {
    th = std::thread([]() { HIP_CHECK(hipStreamSynchronize(hipStreamPerThread)); });
  }

  for (auto& th : threads) {
    th.join();
  }
  REQUIRE(true);
}

TEST_CASE("Unit_hipStreamPerThread_StreamGetPriority") {
  int priority = 0;
  HIP_CHECK(hipStreamGetPriority(hipStreamPerThread, &priority));
}

TEST_CASE("Unit_hipStreamPerThread_StreamGetFlags") {
  unsigned int flags = 0;
  HIP_CHECK(hipStreamGetFlags(hipStreamPerThread, &flags));
}

TEST_CASE("Unit_hipStreamPerThread_StreamDestroy") {
  hipError_t status = hipStreamDestroy(hipStreamPerThread);
  REQUIRE(status != hipSuccess);
}

TEST_CASE("Unit_hipStreamPerThread_MemcpyAsync") {
  unsigned int ele_size = (16 * 1024);  // 16KB
  int* A_h = nullptr;
  int* A_d = nullptr;

  HIP_CHECK(hipHostMalloc(&A_h, ele_size*sizeof(int)));
  HIP_CHECK(hipMalloc(&A_d, ele_size * sizeof(int)));

  for (unsigned int i = 0; i < ele_size; ++i) {
    A_h[i] = 123;
  }

  HIP_CHECK(hipMemcpy(A_d, A_h, ele_size * sizeof(int), hipMemcpyHostToDevice));

  // Rest host memory
  for (unsigned int i = 0; i < ele_size; ++i) {
    A_h[i] = 0;
  }

  HIP_CHECK(hipMemcpyAsync(A_h, A_d, ele_size * sizeof(int), hipMemcpyDeviceToHost,
                           hipStreamPerThread));
  HIP_CHECK(hipStreamSynchronize(hipStreamPerThread));

  // Verify result
  for (unsigned int i = 0; i < ele_size; ++i) {
    REQUIRE(A_h[i] == 123);
  }
}