buffertestdyna5.java

MPI for java for Distributed Programming

package mpjdev.buffertest;

import mpjdev.*;
import mpjbuf.*;

/**
 * Gather methods of Buffer Class, and Scatter methods of Buffer Class.
 */
public class BufferTestDyna5 {
  public static void main(String args[]) throws Exception {
  }

  public BufferTestDyna5() {
  }


  public BufferTestDyna5(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("BufferTestDyna5: 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) {
      /********* THINGIES TO BE SENT ******************/
      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};

      Buffer floatBuffer = new Buffer(
              BufferFactory.create(8 + SEND_OVERHEAD),
	      SEND_OVERHEAD, 8+ SEND_OVERHEAD );
      
      floatBuffer.putSectionHeader(Type.FLOAT_DYNAMIC);
      floatBuffer.strGather(floatArray, 0, 2, 0, 2, indexes);

      Buffer byteBuffer = new Buffer(
              BufferFactory.create(8 + SEND_OVERHEAD),
	      SEND_OVERHEAD, 8+ SEND_OVERHEAD );
      byteBuffer.putSectionHeader(Type.BYTE_DYNAMIC);
      byteBuffer.strGather(byteArray, 0, 2, 0, 2, indexes);

      Buffer charBuffer = new Buffer(
              BufferFactory.create(8 + SEND_OVERHEAD),
	      SEND_OVERHEAD, 8+ SEND_OVERHEAD );
      charBuffer.putSectionHeader(Type.CHAR_DYNAMIC);
      charBuffer.strGather(charArray, 0, 2, 0, 2, indexes);

      Buffer intBuffer = new Buffer(
              BufferFactory.create(8 + SEND_OVERHEAD),
	      SEND_OVERHEAD, 8+ SEND_OVERHEAD );
      intBuffer.putSectionHeader(Type.INT_DYNAMIC);
      intBuffer.strGather(intArray, 0, 2, 0, 2, indexes);

      Buffer shortBuffer = new Buffer(
              BufferFactory.create(8 + SEND_OVERHEAD),
	      SEND_OVERHEAD, 8+ SEND_OVERHEAD );
      shortBuffer.putSectionHeader(Type.SHORT_DYNAMIC);
      shortBuffer.strGather(shortArray, 0, 2, 0, 2, indexes);

      Buffer booleanBuffer = new Buffer(
              BufferFactory.create(8 + SEND_OVERHEAD),
	      SEND_OVERHEAD, 8+ SEND_OVERHEAD );
      booleanBuffer.putSectionHeader(Type.BOOLEAN_DYNAMIC);
      booleanBuffer.strGather(booleanArray, 0, 2, 0, 2, indexes);

      Buffer longBuffer = new Buffer(
              BufferFactory.create(8 + SEND_OVERHEAD),
	      SEND_OVERHEAD, 8+ SEND_OVERHEAD );
      longBuffer.putSectionHeader(Type.LONG_DYNAMIC);
      longBuffer.strGather(longArray, 0, 2, 0, 2, indexes);

      Buffer doubleBuffer = new Buffer(
              BufferFactory.create(8 + SEND_OVERHEAD),
	      SEND_OVERHEAD, 8+ SEND_OVERHEAD );
      doubleBuffer.putSectionHeader(Type.DOUBLE_DYNAMIC);
      doubleBuffer.strGather(doubleArray, 0, 2, 0, 2, indexes);

      /********* PACKING OF THE BUFFER *****************/
      //uses blocking send to
      floatBuffer.commit();
      intBuffer.commit();
      byteBuffer.commit();
      charBuffer.commit();
      doubleBuffer.commit();
      longBuffer.commit();
      booleanBuffer.commit();
      shortBuffer.commit();

      MPJDev.WORLD.send(floatBuffer, 1, 992, true);
      MPJDev.WORLD.send(intBuffer, 1, 999, true);
      MPJDev.WORLD.send(byteBuffer, 1, 998, true);
      MPJDev.WORLD.send(charBuffer, 1, 997, true);
      MPJDev.WORLD.send(doubleBuffer, 1, 996, true);
      MPJDev.WORLD.send(longBuffer, 1, 995, true);
      MPJDev.WORLD.send(booleanBuffer, 1, 994, true);
      MPJDev.WORLD.send(shortBuffer, 1, 993, true);
      /********* PACKING OF THE BUFFER *****************/
      //System.out.println("Send Completed \n\n");
      BufferFactory.destroy(intBuffer.getStaticBuffer() );
      BufferFactory.destroy(charBuffer.getStaticBuffer() );
      BufferFactory.destroy(shortBuffer.getStaticBuffer() );
      BufferFactory.destroy(longBuffer.getStaticBuffer()  );
      BufferFactory.destroy(booleanBuffer.getStaticBuffer()  );
      BufferFactory.destroy(floatBuffer.getStaticBuffer()  ); 
      BufferFactory.destroy(byteBuffer.getStaticBuffer()  ); 
      BufferFactory.destroy(doubleBuffer.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 ******************/

      int indexes[] = {
          2, 4, 6, 8};

      Buffer intBuffer = new Buffer(
	     BufferFactory.create( 8 + RECV_OVERHEAD), RECV_OVERHEAD, 
	     8+RECV_OVERHEAD) ; 
      
      Buffer floatBuffer = new Buffer(
             BufferFactory.create( 8 + RECV_OVERHEAD), RECV_OVERHEAD, 
	     8+RECV_OVERHEAD) ; 
      
      Buffer doubleBuffer = new Buffer(
	     BufferFactory.create( 8 + RECV_OVERHEAD), RECV_OVERHEAD, 
	     8+RECV_OVERHEAD) ; 
      
      Buffer shortBuffer = new Buffer(
	     BufferFactory.create( 8 + RECV_OVERHEAD), RECV_OVERHEAD, 
	     8+RECV_OVERHEAD) ; 
      
      Buffer booleanBuffer = new Buffer(
	     BufferFactory.create( 8 + RECV_OVERHEAD), RECV_OVERHEAD, 
	     8+RECV_OVERHEAD) ; 
      
      Buffer charBuffer = new Buffer(
	     BufferFactory.create( 8 + RECV_OVERHEAD), RECV_OVERHEAD, 
	     8+RECV_OVERHEAD) ; 
      
      Buffer longBuffer = new Buffer(
	     BufferFactory.create( 8 + RECV_OVERHEAD), RECV_OVERHEAD, 
	     8+RECV_OVERHEAD) ; 
      
      Buffer byteBuffer = new Buffer(
	     BufferFactory.create( 8 + RECV_OVERHEAD), RECV_OVERHEAD, 
	     8+RECV_OVERHEAD) ; 

      MPJDev.WORLD.recv(floatBuffer, 0, 992, true);
      MPJDev.WORLD.recv(intBuffer, 0, 999, true);
      MPJDev.WORLD.recv(byteBuffer, 0, 998, true);
      MPJDev.WORLD.recv(charBuffer, 0, 997, true);
      MPJDev.WORLD.recv(doubleBuffer, 0, 996, true);
      MPJDev.WORLD.recv(longBuffer, 0, 995, true);
      MPJDev.WORLD.recv(booleanBuffer, 0, 994, true);
      MPJDev.WORLD.recv(shortBuffer, 0, 993, true);

      floatBuffer.commit();
      intBuffer.commit();
      doubleBuffer.commit();
      longBuffer.commit();
      shortBuffer.commit();
      charBuffer.commit();
      byteBuffer.commit();
      booleanBuffer.commit();

      try {
        floatBuffer.getSectionHeader ();
        floatBuffer.getSectionSize ();
        floatBuffer.strScatter(floatReadArray, 0, 2, 0, 2, indexes);

        intBuffer.getSectionHeader();
        intBuffer.getSectionSize ();
        intBuffer.strScatter(intReadArray, 0, 2, 0, 2, indexes);

        doubleBuffer.getSectionHeader();
	doubleBuffer.getSectionSize () ;
        doubleBuffer.strScatter(doubleReadArray, 0, 2, 0, 2, indexes);

        longBuffer.getSectionHeader();
	longBuffer.getSectionSize () ;
        longBuffer.strScatter(longReadArray, 0, 2, 0, 2, indexes);

        shortBuffer.getSectionHeader();
        shortBuffer.getSectionSize ();
        shortBuffer.strScatter(shortReadArray, 0, 2, 0, 2, indexes);

        charBuffer.getSectionHeader();
        charBuffer.getSectionSize ();
        charBuffer.strScatter(charReadArray, 0, 2, 0, 2, indexes);

        byteBuffer.getSectionHeader();
        byteBuffer.getSectionSize ();
        byteBuffer.strScatter(byteReadArray, 0, 2, 0, 2, indexes);

        booleanBuffer.getSectionHeader();
        booleanBuffer.getSectionSize ();
        booleanBuffer.strScatter(booleanReadArray, 0, 2, 0, 2, indexes);
      }
      catch (Exception e) {
        e.printStackTrace();
      }
      BufferFactory.destroy(intBuffer.getStaticBuffer() );
      BufferFactory.destroy(charBuffer.getStaticBuffer() );
      BufferFactory.destroy(shortBuffer.getStaticBuffer() );
      BufferFactory.destroy(longBuffer.getStaticBuffer()  );
      BufferFactory.destroy(booleanBuffer.getStaticBuffer()  );
      BufferFactory.destroy(floatBuffer.getStaticBuffer()  ); 
      BufferFactory.destroy(byteBuffer.getStaticBuffer()  ); 
      BufferFactory.destroy(doubleBuffer.getStaticBuffer()  ); 
      
      System.out.println("BufferTestDyna5 TEST Completed (?) ");
    }
 //   MPJDev.WORLD.barrier();
    //This should be the last call, in order to finish the communication
    MPJDev.finish();
  }
}