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[4];
  32     datasizes[0] = 1000;
  33     datasizes[1] = 1500;
  34     datasizes[2] = 2000;
  35     datasizes[3] = 8000;
  36     JACOBI_NUM_ITER = 100;
  37     RANDOM_SEED = 10101010;
  38     Gtotal = 0.0;
  39   }
  40
  41   public void JGFsetsize(int size){
  42     this.size = size;
  43   }
  44
  45   public static void JGFkernel(JGFSORBench sor) {
  46     int numthreads, datasize;
  47     BarrierServer mybarr;
  48
  49     int[] mid = new int[4];
  50     mid[0] = (128<<24)|(195<<16)|(175<<8)|84;//dw-10
  51     mid[1] = (128<<24)|(195<<16)|(175<<8)|85;//dw-11
  52     mid[2] = (128<<24)|(195<<16)|(175<<8)|86;//dw-12
  53     mid[3] = (128<<24)|(195<<16)|(175<<8)|87;//dw-13
  54
  55     double[][] G;
  56     int num_iterations;
  57
  58     atomic {
  59       numthreads = sor.nthreads;
  60       datasize = sor.datasizes[sor.size];
  61       mybarr = global new BarrierServer(numthreads);
  62       G =  global new double[datasize][];
  63       num_iterations = sor.JACOBI_NUM_ITER;
  64     }
  65     mybarr.start(mid[0]);
  66
  67     double omega = 1.25;
  68     double omega_over_four = omega * 0.25;
  69     double one_minus_omega = 1.0 - omega;
  70
  71     // update interior points
  72     //
  73     //spawn threads
  74
  75     SORWrap[] thobjects = new SORWrap[numthreads];
  76
  77     atomic {
  78         for(int i=0;i<numthreads;i++) {
  79             thobjects[i] =  new SORWrap(global new SORRunner(i,omega,G,num_iterations,numthreads));
  80         }
  81     }
  82
  83     boolean waitfordone=true;
  84     while(waitfordone) {
  85       atomic {
  86         if (mybarr.done)
  87           waitfordone=false;
  88       }
  89     }
  90
  91     for(int i=0;i<numthreads;i++) {
  92         thobjects[i].sor.start(mid[i]);
  93     }
  94
  95     for(int i=0;i<numthreads;i++) {
  96       thobjects[i].sor.join();
  97     }
  98
  99     //JGFInstrumentor.stopTimer("Section2:SOR:Kernel", instr.timers);
 100     atomic {
 101         for (int i=1; i<G.length-1; i++) {
 102             for (int j=1; j<G.length-1; j++) {
 103                 sor.Gtotal += G[i][j];
 104             }
 105         }
 106     }
 107   }
 108
 109   public int JGFvalidate(){
 110
 111     double refval[];
 112     refval = new double[4];
 113     refval[0] = 0.498574406322512;
 114     refval[1] = 1.1234778980135105;
 115     refval[2] = 1.9954895063582696;
 116     refval[3] = 2.654895063582696;
 117     double dev = Math.fabs(Gtotal - refval[size]);
 118     long l = (long) refval[size] * 1000000;
 119     long r = (long) Gtotal * 1000000;
 120     if (l != r ){
 121       return 1;
 122     } else {
 123       return 0;
 124     }
 125   }
 126 }