diff options
Diffstat (limited to 'cacheRows.c')
-rw-r--r-- | cacheRows.c | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/cacheRows.c b/cacheRows.c index b784ee3..08b8142 100644 --- a/cacheRows.c +++ b/cacheRows.c @@ -3,31 +3,31 @@ #include <stdlib.h> #define MEASURE_METHOD optmemmeasure -#define RUNS 1000 -#define MIN_OFFSET 1 -#define MAX_OFFSET 128 -#define OFFSETS = MAX_OFFSET - MIN_OFFSET -#define FIELD_TYPE uint32_t +#define FIELD_SIZE 20000 int main(int argc, char* argv[]) { - - //uint64_t *results = malloc(sizeof(uint64_t)*RUNS*OFFSETS); - FIELD_TYPE *field = malloc(sizeof(FIELD_TYPE)*RUNS*OFFSETS); - int i=0; - - for(i=0;i <= RUNS;i++){ - measure(i*OFFSETS,field); - } - - - return 0; + + char *field = malloc(FIELD_SIZE); + int i,j; + uint64_t time=0; + + // fill array with crap + for (i=0;i < FIELD_SIZE; ++i) { + field[i]=(i+2342) % 255; + } + + for(i=0; i<FIELD_SIZE; ++i) { + time=optmemmeasure(field,i); + if (time < 1000) + fprintf(stdout,"%d %lld\n",i,time); + + // scrambeled eggs + for (j=0;j<FIELD_SIZE-1;++j) { + field[i]=(field[i]*field[i+1]) % 255; + } + field[FIELD_SIZE-1] = (field[FIELD_SIZE-1]*field[0]) % 255; + } + + return 0; } -void measure(int offset,FIELD_TYPE *field){ - int lowerAddress = field + sizeof(FIELD_TYPE)*offset; - - for(i=MIN_OFFSET;i <= MAX_OFFSET;i++){ - unit64_t time = MEASURE_METHOD((void*)lowerAddress,i*sizeof(FIELD_TYPE)); - fprintf(stdout,"%d %lld",i,time); - } -} |