cache

#include <stdio.h>
#include <papi.h>
#include <stdlib.h>

#define NUM_EVENTS 2

int main(int argc, char **argv)
{
  int a = atoi(argv[1]);
  int b = atoi(argv[2]);

  int events[NUM_EVENTS] = {PAPI_L1_DCM, PAPI_L2_DCM};
  long long values[NUM_EVENTS];
  
  PAPI_library_init(PAPI_VER_CURRENT);
  
  PAPI_start_counters(events, NUM_EVENTS);
  printf("%d+%d=%d\n", a, b, a+b);
  PAPI_read_counters(values, NUM_EVENTS);
  PAPI_stop_counters(values, NUM_EVENTS);
  
  for (int i=0; i<NUM_EVENTS; i++)
    printf("L%d Cache Misses: %lld\n", i+1, values[i]);
  
  return 0;
}