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//******************************************************************************
//
// File: Test12.java
// Package: edu.rit.pj.test
// Unit: Class edu.rit.pj.test.Test12
//
// This Java source file is copyright (C) 2007 by Alan Kaminsky. All rights
// reserved. For further information, contact the author, Alan Kaminsky, at
// ark@cs.rit.edu.
//
// This Java source file is part of the Parallel Java Library ("PJ"). PJ is free
// software; you can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// PJ is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
//
// Linking this library statically or dynamically with other modules is making a
// combined work based on this library. Thus, the terms and conditions of the
// GNU General Public License cover the whole combination.
//
// As a special exception, the copyright holders of this library give you
// permission to link this library with independent modules to produce an
// executable, regardless of the license terms of these independent modules, and
// to copy and distribute the resulting executable under terms of your choice,
// provided that you also meet, for each linked independent module, the terms
// and conditions of the license of that module. An independent module is a
// module which is not derived from or based on this library. If you modify this
// library, you may extend this exception to your version of the library, but
// you are not obligated to do so. If you do not wish to do so, delete this
// exception statement from your version.
//
// A copy of the GNU General Public License is provided in the file gpl.txt. You
// may also obtain a copy of the GNU General Public License on the World Wide
// Web at http://www.gnu.org/licenses/gpl.html.
//
//******************************************************************************
package edu.rit.pj.test;
import edu.rit.crypto.blockcipher.AES256CipherSmp;
import edu.rit.pj.ParallelRegion;
import edu.rit.pj.ParallelTeam;
import edu.rit.util.Range;
/**
* Class Test12 is a unit test main program for the SMP barrier functionality in
* package {@linkplain edu.rit.pj}. The program obtains three numbers,
* <I>N1</I>, <I>N2</I>, and <I>N3</I>, from the command line. Then the program
* does the following:
* <PRE>
* block = Array of N2 16-byte blocks
* for i = 0 to N1 - 1
* parallel for j = 0 to N2 - 1
* for k = 0 to N3 - 1
* Encrypt block[j] using AES with an all-zero key
* barrier
* </PRE>
* <P>
* Usage: java -Dpj.nt=<I>K</I> edu.rit.pj.test.Test12 <I>N1</I> <I>N2</I>
* <I>N3</I>
* <BR><I>K</I> = Number of parallel threads
* <BR><I>N1</I> = Number of outer loop iterations
* <BR><I>N2</I> = Number of middle loop iterations
* <BR><I>N3</I> = Number of inner loop iterations
*
* @author Alan Kaminsky
* @version 20-Dec-2007
*/
public class Test12
{
// Prevent construction.
private Test12()
{
}
// Global variables.
// Command line arguments.
static int N1;
static int N2;
static int N3;
// Array of blocks.
static byte[][] block;
// Main program.
/**
* Unit test main program.
*/
public static void main
(String[] args)
throws Exception
{
// Start timing.
long time = -System.currentTimeMillis();
// Parse command line arguments.
if (args.length != 3) usage();
N1 = Integer.parseInt (args[0]);
N2 = Integer.parseInt (args[1]);
N3 = Integer.parseInt (args[2]);
// Set up blocks. Each block has 16 bytes data plus 128 bytes padding to
// avert cache interference.
block = new byte [N2] [144];
// Parallel region.
new ParallelTeam().execute (new ParallelRegion()
{
public void run() throws Exception
{
// Determine this thread's middle loop range.
Range range =
new Range (0, N2-1)
.subrange (getThreadCount(), getThreadIndex());
int lb = range.lb();
int ub = range.ub();
// Set up cipher object.
AES256CipherSmp cipher = new AES256CipherSmp (new byte [32]);
// Outer loop, N1 iterations.
for (int i = 0; i < N1; ++ i)
{
// Middle loop, N2 iterations in parallel.
for (int j = lb; j <= ub; ++ j)
{
byte[] block_j = block[j];
// Inner loop, N iterations.
for (int k = 0; k < N3; ++ k)
{
cipher.encrypt (block_j, block_j);
}
}
// Team threads wait for each other each outer loop
// iteration.
barrier();
}
}
});
// Stop timing.
time += System.currentTimeMillis();
System.out.println (time);
}
/**
* Print a usage message and exit.
*/
private static void usage()
{
System.err.println ("Usage: java -Dpj.nt=<K> edu.rit.pj.test.Test12 <N1> <N2> <N3>");
System.err.println ("<K> = Number of parallel threads");
System.err.println ("<N1> = Number of outer loop iterations");
System.err.println ("<N2> = Number of middle loop iterations");
System.err.println ("<N3> = Number of inner loop iterations");
System.exit (1);
}
}
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