benchmarks/multiply/multiply_main.c

   1 // *************************************************************************
   2 // multiply filter bencmark
   3 // -------------------------------------------------------------------------
   4 //
   5 // This benchmark tests the software multiply implemenation. The
   6 // input data (and reference data) should be generated using the
   7 // multiply_gendata.pl perl script and dumped to a file named
   8 // dataset1.h You should not change anything except the
   9 // HOST_DEBUG and VERIFY macros for your timing run.
  10
  11 #include "multiply.h"
  12
  13 int ncores = 1;
  14 #include "util.h"
  15
  16 //--------------------------------------------------------------------------
  17 // Macros
  18
  19 // Set HOST_DEBUG to 1 if you are going to compile this for a host
  20 // machine (ie Athena/Linux) for debug purposes and set HOST_DEBUG
  21 // to 0 if you are compiling with the smips-gcc toolchain.
  22
  23 #ifndef HOST_DEBUG
  24 #define HOST_DEBUG 0
  25 #endif
  26
  27 // Set PREALLOCATE to 1 if you want to preallocate the benchmark
  28 // function before starting stats. If you have instruction/data
  29 // caches and you don't want to count the overhead of misses, then
  30 // you will need to use preallocation.
  31
  32 #ifndef PREALLOCATE
  33 #define PREALLOCATE 0
  34 #endif
  35
  36 // Set VERIFY to 1 if you want the program to check that the sort
  37 // function returns the right answer. When you are doing your
  38 // benchmarking you should set this to 0 so that the verification
  39 // is not included in your timing.
  40
  41 #ifndef VERIFY
  42 #define VERIFY     1
  43 #endif
  44
  45 // Set SET_STATS to 1 if you want to carve out the piece that actually
  46 // does the computation.
  47
  48 #ifndef SET_STATS
  49 #define SET_STATS 0
  50 #endif
  51
  52 //--------------------------------------------------------------------------
  53 // Input/Reference Data
  54
  55 #include "dataset1.h"
  56
  57 //--------------------------------------------------------------------------
  58 // Helper functions
  59
  60 int verify( int n, int test[], int correct[] )
  61 {
  62   int i;
  63   for ( i = 0; i < n; i++ ) {
  64     if ( test[i] != correct[i] ) {
  65       return 2;
  66     }
  67   }
  68   return 1;
  69 }
  70
  71 #if HOST_DEBUG
  72 void printArray( char name[], int n, int arr[] )
  73 {
  74   int i;
  75   printf( " %10s :", name );
  76   for ( i = 0; i < n; i++ )
  77     printf( " %3d ", arr[i] );
  78   printf( "\n" );
  79 }
  80 #endif
  81
  82 void setStats( int enable )
  83 {
  84 #if ( !HOST_DEBUG && SET_STATS )
  85   asm( "mtpcr %0, cr10" : : "r" (enable) );
  86 #endif
  87 }
  88
  89 //--------------------------------------------------------------------------
  90 // Main
  91
  92 int main( int argc, char* argv[] )
  93 {
  94   int i;
  95   int results_data[DATA_SIZE];
  96
  97   // Output the input arrays
  98
  99 #if HOST_DEBUG
 100   printArray( "input1",  DATA_SIZE, input_data1  );
 101   printArray( "input2",  DATA_SIZE, input_data2  );
 102   printArray( "verify", DATA_SIZE, verify_data );
 103 #endif
 104
 105 #if ( !HOST_DEBUG && PREALLOCATE )
 106   for (i = 0; i < DATA_SIZE; i++)
 107   {
 108     results_data[i] = multiply( input_data1[i], input_data2[i] );
 109   }
 110 #endif
 111
 112 #if HOST_DEBUG
 113   for (i = 0; i < DATA_SIZE; i++)
 114   {
 115     results_data[i] = multiply( input_data1[i], input_data2[i] );
 116   }
 117 #else
 118   setStats(1);
 119   for (i = 0; i < DATA_SIZE; i++)
 120   {
 121     results_data[i] = multiply( input_data1[i], input_data2[i] );
 122   }
 123   setStats(0);
 124 #endif
 125
 126   // Print out the results
 127
 128 #if HOST_DEBUG
 129   printArray( "results", DATA_SIZE, results_data );
 130 #endif
 131
 132   // Check the results
 133
 134   finishTest(verify( DATA_SIZE, results_data, verify_data ));
 135
 136 }