buffertest2.java

MPI for java for Distributed Programming

package buffertest;

import mpjdev.*;
import mpjbuf.*;
import java.util.Arrays;

public class BufferTest2 {

  public BufferTest2(String args[]) throws Exception {

    MPJDev.init(args);

    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';
    }

    if (MPJDev.WORLD.id() == 0) {

     Buffer buffer = new
	     Buffer( (100 + 100 + 200 + 200 + 400 + 400 + 800 + 800) + (8 * 8) +
                 100);

      buffer.putSectionHeader(Buffer.BYTE);
      buffer.write(byteArray, 0, 100); //writes the first section
      buffer.putSectionHeader(Buffer.CHAR);
      buffer.write(charArray, 0, 100); //writes teh second section
      buffer.putSectionHeader(Buffer.INT);
      buffer.write(intArray, 0, 100); // and so on ....
      buffer.putSectionHeader(Buffer.SHORT);
      buffer.write(shortArray, 0, 100);
      buffer.putSectionHeader(Buffer.BOOLEAN);
      buffer.write(booleanArray, 0, 100);
      buffer.putSectionHeader(Buffer.LONG);
      buffer.write(longArray, 0, 100);
      buffer.putSectionHeader(Buffer.DOUBLE);
      buffer.write(doubleArray, 0, 100);
      buffer.putSectionHeader(Buffer.FLOAT);
      buffer.write(floatArray, 0, 100);
      
      buffer.commit();
      MPJDev.WORLD.send(buffer, 1, 999); 
      System.out.println("Send Completed \n\n");
    }

    else if (MPJDev.WORLD.id() == 1) {
     
      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';
      }

      Buffer buffer = new Buffer( (100 + 100 + 200 + 200 + 400 + 400 + 800 +
                                   800) + (8 * 8) + 100);
      MPJDev.WORLD.recv(buffer, 0, 999);
      buffer.commit();

      try {
        System.out.println("Read byte array");
        buffer.getSectionHeader(Buffer.BYTE);
        buffer.read(byteReadArray, 0, 100); //reads the first section
        System.out.println("Read char array");
        buffer.getSectionHeader(Buffer.CHAR);
        buffer.read(charReadArray, 0, 100); //reads the second section
        System.out.println("Read int array");
        buffer.getSectionHeader(Buffer.INT);
        buffer.read(intReadArray, 0, 100); // and so on ....
        System.out.println("Read short array");
        buffer.getSectionHeader(Buffer.SHORT);
        buffer.read(shortReadArray, 0, 100);
        System.out.println("Read boolean array");
        buffer.getSectionHeader(Buffer.BOOLEAN);
        buffer.read(booleanReadArray, 0, 100);
        System.out.println("Read long array");
        buffer.getSectionHeader(Buffer.LONG);
        buffer.read(longReadArray, 0, 100);
        System.out.println("Read double array");
        buffer.getSectionHeader(Buffer.DOUBLE);
        buffer.read(doubleReadArray, 0, 100);
        System.out.println("Read float array");
        buffer.getSectionHeader(Buffer.FLOAT);
        buffer.read(floatReadArray, 0, 100);
      }
      catch (Exception e) {
        e.printStackTrace();
        MPJDev.finish();
      }

      if (Arrays.equals(intArray, intReadArray) &&
          Arrays.equals(floatArray, floatReadArray) &&
          Arrays.equals(doubleArray, doubleReadArray) &&
          Arrays.equals(longArray, longReadArray) &&
          Arrays.equals(shortArray, shortReadArray) &&
          Arrays.equals(charArray, charReadArray) &&
          Arrays.equals(byteArray, byteReadArray) &&
          Arrays.equals(booleanArray, booleanReadArray)) {
        System.out.println("\n#################" +
                           "\n <<<<PASSED>>>> " +
                           "\n################");
      }
      else {
        System.out.println("\n#################" +
                           "\n <<<<FAILED>>>> " +
                           "\n################");
        System.exit(0);
      }
    }

    MPJDev.finish();
  }

  public static void main(String args[]) throws Exception {
    BufferTest2 test = new BufferTest2(args);
  }
}