benchmarks/median/median_main.c

   1 //**************************************************************************
   2 // Median filter bencmark
   3 //--------------------------------------------------------------------------
   4 //
   5 // This benchmark performs a 1D three element median filter. The
   6 // input data (and reference data) should be generated using the
   7 // median_gendata.pl perl script and dumped to a file named
   8 // dataset1.h You should not change anything except the
   9 // HOST_DEBUG and PREALLOCATE macros for your timing run.
  10
  11 #include "median.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 SET_STATS to 1 if you want to carve out the piece that actually
  37 // does the computation.
  38
  39 #ifndef SET_STATS
  40 #define SET_STATS 0
  41 #endif
  42
  43 //--------------------------------------------------------------------------
  44 // Input/Reference Data
  45
  46 #include "dataset1.h"
  47
  48 //--------------------------------------------------------------------------
  49 // Helper functions
  50
  51 int verify( int n, int test[], int correct[] )
  52 {
  53   int i;
  54   for ( i = 0; i < n; i++ ) {
  55     if ( test[i] != correct[i] ) {
  56       return 2;
  57     }
  58   }
  59   return 1;
  60 }
  61
  62 #if HOST_DEBUG
  63 void printArray( char name[], int n, int arr[] )
  64 {
  65   int i;
  66   printf( " %10s :", name );
  67   for ( i = 0; i < n; i++ )
  68     printf( " %3d ", arr[i] );
  69   printf( "\n" );
  70 }
  71 #endif
  72
  73 void setStats( int enable )
  74 {
  75 #if ( !HOST_DEBUG && SET_STATS )
  76   asm( "mtpcr %0, cr10" : : "r" (enable) );
  77 #endif
  78 }
  79
  80 //--------------------------------------------------------------------------
  81 // Main
  82
  83 int main( int argc, char* argv[] )
  84 {
  85   int results_data[DATA_SIZE];
  86
  87   // Output the input array
  88
  89 #if HOST_DEBUG
  90   printArray( "input",  DATA_SIZE, input_data  );
  91   printArray( "verify", DATA_SIZE, verify_data );
  92 #endif
  93
  94   // If needed we preallocate everything in the caches
  95
  96 #if ( !HOST_DEBUG && PREALLOCATE )
  97   median( DATA_SIZE, input_data, results_data );
  98 #endif
  99
 100   // Do the filter
 101
 102 #if HOST_DEBUG
 103   median( DATA_SIZE, input_data, results_data );
 104 #else
 105   setStats(1);
 106   median( DATA_SIZE, input_data, results_data );
 107   setStats(0);
 108 #endif
 109
 110   // Print out the results
 111
 112 #if HOST_DEBUG
 113   printArray( "results", DATA_SIZE, results_data );
 114 #endif
 115
 116   // Check the results
 117
 118   finishTest(verify( DATA_SIZE, results_data, verify_data ));
 119
 120 }