benchmarks initial commit

1 files changed, 139 insertions, 0 deletions

diff --git a/benchmarks/vvadd/vvadd_main.c b/benchmarks/vvadd/vvadd_main.c
new file mode 100644
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--- /dev/null
+++ b/benchmarks/vvadd/vvadd_main.c
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+//**************************************************************************
+// Vector-vector add benchmark
+//--------------------------------------------------------------------------
+//
+// This benchmark uses adds to vectors and writes the results to a
+// third vector. The input data (and reference data) should be
+// generated using the vvadd_gendata.pl perl script and dumped
+// to a file named dataset1.h The smips-gcc toolchain does not
+// support system calls so printf's can only be used on a host system,
+// not on the smips processor simulator itself. You should not change
+// anything except the HOST_DEBUG and PREALLOCATE macros for your timing
+// runs.
+
+//--------------------------------------------------------------------------
+// Macros
+
+// Set HOST_DEBUG to 1 if you are going to compile this for a host
+// machine (ie Athena/Linux) for debug purposes and set HOST_DEBUG
+// to 0 if you are compiling with the smips-gcc toolchain.
+
+#ifndef HOST_DEBUG
+#define HOST_DEBUG 0
+#endif
+
+// Set PREALLOCATE to 1 if you want to preallocate the benchmark
+// function before starting stats. If you have instruction/data
+// caches and you don't want to count the overhead of misses, then
+// you will need to use preallocation.
+
+#ifndef PREALLOCATE
+#define PREALLOCATE 0
+#endif
+
+// Set SET_STATS to 1 if you want to carve out the piece that actually
+// does the computation.
+
+#ifndef SET_STATS
+#define SET_STATS 0
+#endif
+
+//--------------------------------------------------------------------------
+// Input/Reference Data
+
+#include "dataset1.h"
+
+//--------------------------------------------------------------------------
+// Helper functions
+
+int verify( int n, int test[], int correct[] )
+{
+  int i;
+  for ( i = 0; i < n; i++ ) {
+    if ( test[i] != correct[i] ) {
+      return 2;
+    }
+  }
+  return 1;
+}
+
+#if HOST_DEBUG
+void printArray( char name[], int n, int arr[] )
+{
+  int i;
+  printf( " %10s :", name );
+  for ( i = 0; i < n; i++ )
+    printf( " %3d ", arr[i] );
+  printf( "\n" );
+}
+#endif
+
+void finishTest( int toHostValue )
+{
+#if HOST_DEBUG
+  if ( toHostValue == 1 )
+    printf( "*** PASSED ***\n" );
+  else
+    printf( "*** FAILED *** (tohost = %d)\n", toHostValue );
+  exit(0);
+#else
+  asm( "mtpcr %0, cr30" : : "r" (toHostValue) );
+  while ( 1 ) { }
+#endif
+}
+
+void setStats( int enable )
+{
+#if ( !HOST_DEBUG && SET_STATS )
+  asm( "mtpcr %0, cr10" : : "r" (enable) );
+#endif
+}
+
+//--------------------------------------------------------------------------
+// vvadd function
+
+void vvadd( int n, int a[], int b[], int c[] )
+{
+  int i;
+  for ( i = 0; i < n; i++ )
+    c[i] = a[i] + b[i];
+}
+
+//--------------------------------------------------------------------------
+// Main
+
+int main( int argc, char* argv[] )
+{
+  int results_data[DATA_SIZE];
+
+  // Output the input array
+
+#if HOST_DEBUG
+  printArray( "input1", DATA_SIZE, input1_data );
+  printArray( "input2", DATA_SIZE, input2_data );
+  printArray( "verify", DATA_SIZE, verify_data );
+#endif
+
+  // If needed we preallocate everything in the caches
+
+#if PREALLOCATE
+  vvadd( DATA_SIZE, input1_data, input2_data, results_data );
+#endif
+
+  // Do the vvadd
+
+  setStats(1);
+  vvadd( DATA_SIZE, input1_data, input2_data, results_data );
+  setStats(0);
+
+  // Print out the results
+
+#if HOST_DEBUG
+  printArray( "results", DATA_SIZE, results_data );
+#endif
+
+  // Check the results
+
+  finishTest(verify( DATA_SIZE, results_data, verify_data ));
+
+}