Robust/src/Benchmarks/Prefetch/SOR/dsm/JGFSORBench.java

   1 /**************************************************************************
   2  *                                                                         *
   3  *         Java Grande Forum Benchmark Suite - Thread Version 1.0          *
   4  *                                                                         *
   5  *                            produced by                                  *
   6  *                                                                         *
   7  *                  Java Grande Benchmarking Project                       *
   8  *                                                                         *
   9  *                                at                                       *
  10  *                                                                         *
  11  *                Edinburgh Parallel Computing Centre                      *
  12  *                                                                         *
  13  *                email: epcc-javagrande@epcc.ed.ac.uk                     *
  14  *                                                                         *
  15  *                                                                         *
  16  *      This version copyright (c) The University of Edinburgh, 2001.      *
  17  *                         All rights reserved.                            *
  18  *                                                                         *
  19  **************************************************************************/
  20 public class JGFSORBench {
  21
  22   int size;
  23   int[] datasizes;
  24   int JACOBI_NUM_ITER;
  25   long RANDOM_SEED;
  26   public int nthreads;
  27   public double Gtotal;
  28
  29   public JGFSORBench(int nthreads){
  30     this.nthreads = nthreads;
  31     datasizes = global new int[3];
  32     datasizes[0] = 1000;
  33     datasizes[1] = 1500;
  34     datasizes[2] = 2000;
  35     JACOBI_NUM_ITER = 100;
  36     RANDOM_SEED = 10101010;
  37     Gtotal = 0.0;
  38   }
  39
  40   public void JGFsetsize(int size){
  41     this.size = size;
  42   }
  43
  44   public static void JGFkernel(JGFSORBench sor) {
  45     int numthreads, datasize;
  46     BarrierServer mybarr;
  47
  48     int[] mid = new int[4];
  49     mid[0] = (128<<24)|(195<<16)|(175<<8)|79;
  50     mid[1] = (128<<24)|(195<<16)|(175<<8)|73;
  51     mid[2] = (128<<24)|(195<<16)|(175<<8)|78;
  52     mid[3] = (128<<24)|(195<<16)|(175<<8)|69;
  53
  54     double[][] G;
  55     int num_iterations;
  56
  57     atomic {
  58       numthreads = sor.nthreads;
  59       datasize = sor.datasizes[sor.size];
  60       mybarr = global new BarrierServer(numthreads);
  61       G =  global new double[datasize][];
  62       num_iterations = sor.JACOBI_NUM_ITER;
  63     }
  64     mybarr.start(mid[0]);
  65
  66     double omega = 1.25;
  67     double omega_over_four = omega * 0.25;
  68     double one_minus_omega = 1.0 - omega;
  69
  70     // update interior points
  71     //
  72     //spawn threads
  73
  74     SORWrap[] thobjects = new SORWrap[numthreads];
  75
  76     atomic {
  77         for(int i=0;i<numthreads;i++) {
  78             thobjects[i] =  new SORWrap(global new SORRunner(i,omega,G,num_iterations,numthreads));
  79         }
  80     }
  81
  82     boolean waitfordone=true;
  83     while(waitfordone) {
  84       atomic {
  85         if (mybarr.done)
  86           waitfordone=false;
  87       }
  88     }
  89
  90     for(int i=0;i<numthreads;i++) {
  91         thobjects[i].sor.start(mid[i]);
  92     }
  93
  94     for(int i=0;i<numthreads;i++) {
  95       thobjects[i].sor.join();
  96     }
  97
  98     //JGFInstrumentor.stopTimer("Section2:SOR:Kernel", instr.timers);
  99     atomic {
 100         for (int i=1; i<G.length-1; i++) {
 101             for (int j=1; j<G.length-1; j++) {
 102                 sor.Gtotal += G[i][j];
 103             }
 104         }
 105     }
 106   }
 107
 108   public int JGFvalidate(){
 109
 110     double refval[];
 111     refval = new double[3];
 112     refval[0] = 0.498574406322512;
 113     refval[1] = 1.1234778980135105;
 114     refval[2] = 1.9954895063582696;
 115     double dev = Math.fabs(Gtotal - refval[size]);
 116     long l = (long) refval[size] * 1000000;
 117     long r = (long) Gtotal * 1000000;
 118     if (l != r ){
 119       return 1;
 120     } else {
 121       return 0;
 122     }
 123   }
 124 }