C++ (Cpp) distributeWork Examples

Example #1

File: diffusion.c Project: jdaaph/DLA

void initialize() {
  bool ok = true;
  int i;

  if (MPIRank == 0) {
    ok = X11_Init();
  }
  if (!ok) {
    MPI_Finalize();
    exit(EXIT_FAILURE);
  }

  distributeWork();

  if (MPIRank != 0) {
    srandom(RandomSeed * MPISize + MPIRank);

    if (MPIRank == 1) {
      ParticleXs[0] = ENVIRONMENT_WIDTH / 2 - 1;
      ParticleYs[0] = ENVIRONMENT_WIDTH / 2 - 1;
      ParticleStates[0] = STUCK;
      i = 1;
    }
    else {
      i = ParticleDispls[MPIRank];
    }

    for (; i < ParticleDispls[MPIRank] + ParticleCounts[MPIRank]; i++) {
      ParticleXs[i] = ENVIRONMENT_WIDTH * random() / RAND_MAX;
      ParticleYs[i] = ENVIRONMENT_HEIGHT * random() / RAND_MAX;
      ParticleStates[i] = FREE;
    }
  }
}

Example #2

File: pi-mpi-1.c Project: Jgarcia08/PetascaleInstitute

/************************
 * FUNCTION DEFINITIONS *
 ************************/
int main(int argc, char **argv) {
  int numRects = 10;
  double area = 0.0;
  int myRank = 0;
  int numProcs = 1;
  int myNumRects = 0;
  int myDispl = 0;

  setupMPI(&argc, &argv, &myRank, &numProcs);

  getUserOptions(argc, argv, &numRects);

  distributeWork(numRects, myRank, numProcs, &myNumRects, &myDispl);

  calculateArea(numRects, myNumRects, (1.0 / numRects), myDispl, &area);

  syncData(myRank, numProcs, &area);

  if (myRank == 0) {
    calculateAndPrintPi(area);
  }

  MPI_Finalize();

  return 0;
}