Examples of org.openpixi.pixi.distributed.partitioning.SimplePartitioner

Package org.openpixi.pixi.distributed.partitioning

Examples of org.openpixi.pixi.distributed.partitioning.SimplePartitioner

org.openpixi.pixi.distributed.partitioning.SimplePartitioner
Basic simulation area partitioner. Works only under following conditions. 1) numCellsX, numCellsY and numPartitions are all powers of 2. 2) numPartitions <= numCellsX * numCellsY The algorithm works as follows. We have list of areas (boxes) which we need to split (initially 1 area/box). - In each iteration we take all the boxes and split them into half at the larger side. - We repeat the previous step until we have the specified number of boxes.

  private static final int NUM_PARTITIONS_SPC = 8;


  public void testPeriodicMapsGeneric() {


    // Create partitions
    Partitioner partitioner = new SimplePartitioner();
    IntBox[] partitions = partitioner.partition(NUM_CELLS_X_GEN, NUM_CELLS_Y_GEN, NUM_PARTITIONS_GEN);
    IntBox globalSimulation = new IntBox(0, NUM_CELLS_X_GEN - 1, 0, NUM_CELLS_Y_GEN - 1);


    // Go through each partition and test its neighbor map
    for (int i = 0; i < partitions.length; ++i) {
      NeighborMap neighborMap = new NeighborMap(

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  public void testHardwallMapsGeneric() {


    // Create partitions
    Partitioner partitioner = new SimplePartitioner();
    IntBox[] partitions = partitioner.partition(NUM_CELLS_X_GEN, NUM_CELLS_Y_GEN, NUM_PARTITIONS_GEN);
    IntBox globalSimulation = new IntBox(0, NUM_CELLS_X_GEN - 1, 0, NUM_CELLS_Y_GEN - 1);


    // Go through each partition and test its neighbor map
    for (int i = 0; i < partitions.length; ++i) {
      NeighborMap neighborMap = new NeighborMap(

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  public void testPeriodicMapSpecific() {


    // Create partitions
    Partitioner partitioner = new SimplePartitioner();
    IntBox[] partitions = partitioner.partition(NUM_CELLS_X_SPC, NUM_CELLS_Y_SPC, NUM_PARTITIONS_SPC);
    IntBox globalSimulation = new IntBox(0, NUM_CELLS_X_SPC - 1, 0, NUM_CELLS_Y_SPC - 1);


    int myPartID = 0;
    NeighborMap neighborMap = new NeighborMap(
        myPartID, partitions, globalSimulation, GeneralBoundaryType.Periodic);

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  public void testHardwallMapSpecific() {


    // Create partitions
    Partitioner partitioner = new SimplePartitioner();
    IntBox[] partitions = partitioner.partition(NUM_CELLS_X_SPC, NUM_CELLS_Y_SPC, NUM_PARTITIONS_SPC);
    IntBox globalSimulation = new IntBox(0, NUM_CELLS_X_SPC - 1, 0, NUM_CELLS_Y_SPC - 1);


    int myPartID = 0;
    NeighborMap neighborMap = new NeighborMap(
        myPartID, partitions, globalSimulation, GeneralBoundaryType.Hardwall);

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  }




  public void distributeProblem() {
    // Partition the problem
    Partitioner partitioner = new SimplePartitioner();
    partitions = partitioner.partition(
        settings.getGridCellsX(), settings.getGridCellsY(), settings.getNumOfNodes());


    // Log the partitioning scheme
    Logger logger = LoggerFactory.getLogger(this.getClass());
    logger.debug("Problem partitioning:\n{}", partitioner);

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  private static final int NUM_CELLS_Y = 32;
  private static final int NUM_PARTITIONS = 16;




  public void testPartition() throws Exception {
    SimplePartitioner partitioner = new SimplePartitioner();
    IntBox[] partitions = partitioner.partition(NUM_CELLS_X, NUM_CELLS_Y, NUM_PARTITIONS);


    Assert.assertEquals(NUM_PARTITIONS, partitions.length);


    int largestXmax = Integer.MIN_VALUE;
    int smallestXmin = Integer.MAX_VALUE;

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Related Classes of org.openpixi.pixi.distributed.partitioning.SimplePartitioner

org.openpixi.pixi.distributed.Master

org.openpixi.pixi.distributed.NeighborMapTest

org.openpixi.pixi.distributed.partitioning.SimplePartitionerTest

org.openpixi.pixi.physics.util.IntBox

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