rocm-systems/tests/src/runtimeApi/module/hipModuleLoadDataMultThreaded.cpp

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/* HIT_START
 * BUILD: %t %s ../../test_common.cpp NVCC_OPTIONS -std=c++11 EXCLUDE_HIP_PLATFORM nvidia LINK_OPTIONS -lpthread
 * TEST: %t
 * HIT_END
 */

#include "hip/hip_runtime.h"
#include "hip/hip_runtime_api.h"
#include <iostream>
#include <fstream>
#include <vector>
#include <thread>
#include <chrono>

#include "test_common.h"

#define LEN 64
#define SIZE LEN << 2
#define THREADS 8
#define MAX_THREADS 512

#define FILENAME "vcpy_kernel.code"
#define kernel_name "hello_world"

std::vector<char> load_file() {
  std::ifstream file(FILENAME, std::ios::binary | std::ios::ate);
  std::streamsize fsize = file.tellg();
  file.seekg(0, std::ios::beg);

  std::vector<char> buffer(fsize);
  if (!file.read(buffer.data(), fsize)) {
    failed("could not open code object '%s'\n", FILENAME);
  }
  return buffer;
}

void run(const std::vector<char>& buffer) {
  hipModule_t Module;
  hipFunction_t Function;

  float *A, *B, *Ad, *Bd;
  A = new float[LEN];
  B = new float[LEN];

  for (uint32_t i = 0; i < LEN; i++) {
    A[i] = i * 1.0f;
    B[i] = 0.0f;
  }

  HIPCHECK(hipMalloc((void**)&Ad, SIZE));
  HIPCHECK(hipMalloc((void**)&Bd, SIZE));

  HIPCHECK(hipMemcpy(Ad, A, SIZE, hipMemcpyHostToDevice));
  HIPCHECK(hipMemcpy(Bd, B, SIZE, hipMemcpyHostToDevice));

  HIPCHECK(hipModuleLoadData(&Module, &buffer[0]));
  HIPCHECK(hipModuleGetFunction(&Function, Module, kernel_name));

  hipStream_t stream;
  HIPCHECK(hipStreamCreate(&stream));

  struct {
    void* _Ad;
    void* _Bd;
  } args;
  args._Ad = (void*) Ad;
  args._Bd = (void*) Bd;
  size_t size = sizeof(args);

  void* config[] = {HIP_LAUNCH_PARAM_BUFFER_POINTER, &args, HIP_LAUNCH_PARAM_BUFFER_SIZE, &size,
                    HIP_LAUNCH_PARAM_END};
  HIPCHECK(hipModuleLaunchKernel(Function, 1, 1, 1, LEN, 1, 1, 0, stream, NULL, (void**)&config));

  HIPCHECK(hipStreamSynchronize(stream));

  HIPCHECK(hipStreamDestroy(stream));

  HIPCHECK(hipModuleUnload(Module));

  HIPCHECK(hipMemcpy(B, Bd, SIZE, hipMemcpyDeviceToHost));

  for (uint32_t i = 0; i < LEN; i++) {
    assert(A[i] == B[i]);
  }

  hipFree(Ad);
  hipFree(Bd);
  delete[] A;
  delete[] B;
}

struct joinable_thread : std::thread {
  template <class... Xs>
  joinable_thread(Xs&&... xs) : std::thread(std::forward<Xs>(xs)...) {} // NOLINT

  joinable_thread& operator=(joinable_thread&& other) = default;
  joinable_thread(joinable_thread&& other)      = default;

  ~joinable_thread() {
    if (this->joinable())
      this->join();
  }
};

void run_multi_threads(uint32_t n, const std::vector<char>& buffer) {
  std::vector<joinable_thread> threads;
  for (uint32_t i = 0; i < n; i++) {
    threads.emplace_back(std::thread{[&] {
    run(buffer);
    }});
  }
}

int main() {
  HIPCHECK(hipInit(0));
  auto buffer = load_file();
  auto file_size = buffer.size() / (1024 * 1024);
  auto thread_count = getHostThreadCount(file_size + 10);
  if(thread_count == 0) {
      failed("Thread Count is zero");
  }

  run_multi_threads(thread_count, buffer);

  passed();
}