buffertestdyna4.java

MPI for java for Distributed Programming

package mpjdev.buffertest;

import mpjdev.*;
import mpjbuf.*;

/**
 * Gather/Scatter Operation on a single
 */
public class BufferTestDyna4 {
  public static void main(String args[]) throws Exception {
  }

  public BufferTestDyna4() {
  }
  
  public BufferTestDyna4(String[] args) throws Exception {

    String[] nargs = new String[args.length+1];	  
    System.arraycopy(args,0,nargs,0,args.length);
    nargs[args.length] = this.toString();	  
    MPJDev.init(args);
    int id = MPJDev.WORLD.id();
    int size = MPJDev.WORLD.size();

    if(size > 2) {
      if(id == 1)
        System.out.println("BufferTestDyna4: Must run with 2 tasks!");      
      //MPJDev.WORLD.barrier();
      MPJDev.finish();
      return;
    }

    int SEND_OVERHEAD = MPJDev.getSendOverhead(); 
    int RECV_OVERHEAD = MPJDev.getRecvOverhead(); 
    
    if (MPJDev.WORLD.id() == 0) {
      int intArray[] = new int[100];
      for (int j = 0; j < intArray.length; j++) {
        intArray[j] = j + 1;
      }

      float floatArray[] = new float[100];
      for (int i = 0; i < floatArray.length; i++) {
        floatArray[i] = i + 11;
      }

      double doubleArray[] = new double[100];
      for (int i = 0; i < doubleArray.length; i++) {
        doubleArray[i] = i + 11.11;
      }

      long longArray[] = new long[100];
      for (int i = 0; i < longArray.length; i++) {
        longArray[i] = i + 11;
      }

      boolean booleanArray[] = new boolean[100];
      for (int i = 0; i < booleanArray.length; i++) {
        booleanArray[i] = true;
      }

      short shortArray[] = new short[100];
      for (int i = 0; i < shortArray.length; i++) {
        shortArray[i] = 1;
      }

      char charArray[] = new char[100];
      for (int i = 0; i < charArray.length; i++) {
        charArray[i] = 's';
      }

      byte byteArray[] = new byte[100];
      for (int i = 0; i < byteArray.length; i++) {
        byteArray[i] = 's';
      }

      int indexes[] = {
          2, 4, 6, 8, 12, 14, 16, 18, 22, 24, 26, 28, 32, 34, 36, 38, 42, 44,
          46, 48, 52, 54, 56, 58,
          62, 64, 66, 68, 72, 74, 76, 78, 82, 84, 86, 88, 92, 94, 96, 98};

      Buffer buffer = new Buffer( 
		      BufferFactory.create((8*8)+SEND_OVERHEAD), 
			      SEND_OVERHEAD, (8*8)+SEND_OVERHEAD ); 
      buffer.putSectionHeader(Type.BYTE_DYNAMIC);
      buffer.gather(byteArray, 40, 0, indexes);
      buffer.putSectionHeader(Type.CHAR_DYNAMIC);
      buffer.gather(charArray, 40, 0, indexes);
      buffer.putSectionHeader(Type.INT_DYNAMIC);
      buffer.gather(intArray, 40, 0, indexes);
      buffer.putSectionHeader(Type.SHORT_DYNAMIC);
      buffer.gather(shortArray, 40, 0, indexes);
      buffer.putSectionHeader(Type.BOOLEAN_DYNAMIC);
      buffer.gather(booleanArray, 40, 0, indexes);
      buffer.putSectionHeader(Type.LONG_DYNAMIC);
      buffer.gather(longArray, 40, 0, indexes);
      buffer.putSectionHeader(Type.DOUBLE_DYNAMIC);
      buffer.gather(doubleArray, 40, 0, indexes);
      buffer.putSectionHeader(Type.FLOAT_DYNAMIC);
      buffer.gather(floatArray, 40, 0, indexes);
      buffer.commit();
      MPJDev.WORLD.send(buffer, 1, 999, true); //Buffer, destinationRank, tag (make sure you have matchin recv also called)
      //System.out.println("Send Completed \n\n");
      //
      BufferFactory.destroy( buffer.getStaticBuffer()) ;
    }

    else if (MPJDev.WORLD.id() == 1) {

      /********* THINGIES TO BE READ ******************/
      int intReadArray[] = new int[100];
      for (int j = 0; j < intReadArray.length; j++) {
        intReadArray[j] = 3;
      }

      float floatReadArray[] = new float[100];
      for (int i = 0; i < floatReadArray.length; i++) {
        floatReadArray[i] = i + 19;
      }

      double doubleReadArray[] = new double[100];
      for (int i = 0; i < doubleReadArray.length; i++) {
        doubleReadArray[i] = i + 99.11;
      }

      long longReadArray[] = new long[100];
      for (int i = 0; i < longReadArray.length; i++) {
        longReadArray[i] = i + 9;
      }

      boolean booleanReadArray[] = new boolean[100];
      for (int i = 0; i < booleanReadArray.length; i++) {
        booleanReadArray[i] = false;
      }

      short shortReadArray[] = new short[100];
      for (int i = 0; i < shortReadArray.length; i++) {
        shortReadArray[i] = 2;
      }

      char charReadArray[] = new char[100];
      for (int i = 0; i < charReadArray.length; i++) {
        charReadArray[i] = 'x';
      }

      byte byteReadArray[] = new byte[100];
      for (int i = 0; i < byteReadArray.length; i++) {
        byteReadArray[i] = 'x';
      }

      /********* THINGIES TO BE READ ******************/
      //Same rules as above apply here as well. For the size of the things.
      Buffer buffer = new Buffer( 
		      BufferFactory.create( (8*8)+RECV_OVERHEAD), 
			     RECV_OVERHEAD, (8*8)+RECV_OVERHEAD); 

      MPJDev.WORLD.recv(buffer, 0, 999, true);
      int indexes[] = {
          2, 4, 6, 8, 12, 14, 16, 18, 22, 24, 26, 28, 32, 34, 36, 38, 42, 44,
          46, 48, 52, 54, 56, 58,
          62, 64, 66, 68, 72, 74, 76, 78, 82, 84, 86, 88, 92, 94, 96, 98};
      buffer.commit();

      try {
        buffer.getSectionHeader();
        buffer.getSectionSize();
        buffer.scatter(byteReadArray, 40, 0, indexes);
	
        buffer.getSectionHeader();
        buffer.getSectionSize();
        buffer.scatter(charReadArray, 40, 0, indexes);
	
        buffer.getSectionHeader();
        buffer.getSectionSize();
        buffer.scatter(intReadArray, 40, 0, indexes);
	
        buffer.getSectionHeader();
        buffer.getSectionSize();
        buffer.scatter(shortReadArray, 40, 0, indexes);
	
        buffer.getSectionHeader();
        buffer.getSectionSize();
        buffer.scatter(booleanReadArray, 40, 0, indexes);
	
        buffer.getSectionHeader();
        buffer.getSectionSize();
        buffer.scatter(longReadArray, 40, 0, indexes);
	
        buffer.getSectionHeader();
        buffer.getSectionSize();
        buffer.scatter(doubleReadArray, 40, 0, indexes);
	
        buffer.getSectionHeader();
        buffer.getSectionSize();
        buffer.scatter(floatReadArray, 40, 0, indexes);
      }
      catch (Exception e) {
        e.printStackTrace();
      }
      
      BufferFactory.destroy( buffer.getStaticBuffer()) ;
      System.out.println("BufferTestDyna4 TEST Completed (?)");
    }

 //   MPJDev.WORLD.barrier();
    MPJDev.finish();
  }
}