rocm-systems/tests/catch/stress/memory/hipMemPrftchAsyncStressTst.cc

/*
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*/

/* Test Case Description:
   The following test allocates a managed memory and prefetch it in
   one-to-all and all-to-one fashion followed by kernel launch within available
   devices*/

#include <hip_test_common.hh>

// Kernel function
__global__ void MemPrftchAsyncKernel1(int* Hmm, size_t N) {
  size_t offset = (hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x);
  size_t stride = hipBlockDim_x * hipGridDim_x;
  for (size_t i = offset; i < N; i += stride) {
    Hmm[i] = Hmm[i] * Hmm[i];
  }
}

static int HmmAttrPrint() {
  int managed = 0;
  WARN("The following are the attribute values related to HMM for"
         " device 0:\n");
  HIP_CHECK(hipDeviceGetAttribute(&managed,
              hipDeviceAttributeDirectManagedMemAccessFromHost, 0));
  WARN("hipDeviceAttributeDirectManagedMemAccessFromHost: " << managed);
  HIP_CHECK(hipDeviceGetAttribute(&managed,
                                 hipDeviceAttributeConcurrentManagedAccess, 0));
  WARN("hipDeviceAttributeConcurrentManagedAccess: " << managed);
  HIP_CHECK(hipDeviceGetAttribute(&managed,
                                 hipDeviceAttributePageableMemoryAccess, 0));
  WARN("hipDeviceAttributePageableMemoryAccess: " << managed);
  HIP_CHECK(hipDeviceGetAttribute(&managed,
              hipDeviceAttributePageableMemoryAccessUsesHostPageTables, 0));
  WARN("hipDeviceAttributePageableMemoryAccessUsesHostPageTables:"
         << managed);

  HIP_CHECK(hipDeviceGetAttribute(&managed, hipDeviceAttributeManagedMemory,
                                  0));
  WARN("hipDeviceAttributeManagedMemory: " << managed);
  return managed;
}

static void ReleaseResource(int *Hmm, int *Hmm1, hipStream_t *strm) {
  HIP_CHECK(hipFree(Hmm));
  HIP_CHECK(hipFree(Hmm1));
  HIP_CHECK(hipStreamDestroy(*strm));
}


/* The following test allocates a managed memory and prefetch it in
   one-to-all and all-to-one fahsion followed by kernel launch within available
   devices*/
TEST_CASE("Unit_hipMemPrefetchAsyncOneToAll") {
  int MangdMem = HmmAttrPrint();
  if (MangdMem == 1) {
    int *Hmm = nullptr, *Hmm1 = nullptr, NumDevs, MemSz = (4096 * 4);
    int InitVal = 123, NumElms = MemSz/4;
    bool IfTestPassed = true;
    HIP_CHECK(hipGetDeviceCount(&NumDevs));
    HIP_CHECK(hipMallocManaged(&Hmm, MemSz));
    HIP_CHECK(hipMallocManaged(&Hmm1, MemSz));
    for (int i = 0; i < NumElms; ++i) {
      Hmm1[i] = InitVal;
    }
    hipStream_t strm;
    for (int i = -1; i < NumDevs; ++i) {
      HIP_CHECK(hipMemPrefetchAsync(Hmm1, MemSz, i, 0));
      for (int j = -1; j < NumDevs; ++j) {
        if (i == j) {
          continue;
        }
        if (j != -1) {
          HIP_CHECK(hipSetDevice(j));
        }
        HIP_CHECK(hipStreamCreate(&strm));
        // Prefetching memory from i to j
        HIP_CHECK(hipMemPrefetchAsync(Hmm1, MemSz, j, strm));
        HIP_CHECK(hipStreamSynchronize(strm));
        MemPrftchAsyncKernel<<<(NumElms/32), 32, 0, strm>>>(Hmm, Hmm1, NumElms);
        HIP_CHECK(hipStreamSynchronize(strm));
        // Verifying the result
        for (int m = 0; m < NumElms; ++m) {
          if (Hmm[m] != (InitVal * InitVal)) {
            IfTestPassed = false;
          }
        }
        if (!IfTestPassed) {
          ReleaseResource(Hmm, Hmm1, &strm);
          INFO("Did not find expected value!");
          REQUIRE(false);
        }
        // Resetting the values in Hmm
        HIP_CHECK(hipMemset(Hmm, 0, MemSz));
        // Prefetching memory from j to i
        HIP_CHECK(hipMemPrefetchAsync(Hmm1, MemSz, i, strm));
        HIP_CHECK(hipStreamSynchronize(strm));
        MemPrftchAsyncKernel<<<(NumElms/32), 32, 0, strm>>>(Hmm, Hmm1, NumElms);
        HIP_CHECK(hipStreamSynchronize(strm));
        // Verifying the result
        for (int m = 0; m < NumElms; ++m) {
          if (Hmm[m] != (InitVal * InitVal)) {
            IfTestPassed = false;
          }
        }
        if (!IfTestPassed) {
          ReleaseResource(Hmm, Hmm1, &strm);
          INFO("Did not find expected value!");
          REQUIRE(false);
        }
        // Resetting the values in Hmm
        HIP_CHECK(hipMemset(Hmm, 0, MemSz));
        HIP_CHECK(hipStreamDestroy(strm));
      }
    }
    // Releasing the resources in case all the scenarios passed
    HIP_CHECK(hipFree(Hmm));
    HIP_CHECK(hipFree(Hmm1));
  } else {
    SUCCEED("GPU 0 doesn't support hipDeviceAttributeManagedMemory "
           "attribute. Hence skipping the testing with Pass result.\n");
  }
}