diff options
Diffstat (limited to 'mbw.c')
| -rw-r--r-- | mbw.c | 9 |
1 files changed, 6 insertions, 3 deletions
@@ -27,6 +27,8 @@ * MBW memory bandwidth benchmark * * 2006, 2012 Andras.Horvath@gmail.com + * 2013 j.m.slocum@gmail.com + * (Special thanks to Stephen Pasich) * * http://github.com/raas/mbw * @@ -97,6 +99,7 @@ double worker(unsigned long long asize, long *a, long *b, int type, unsigned lon unsigned int long_size=sizeof(long); /* array size in bytes */ unsigned long long array_bytes=asize*long_size; + unsigned int advance=block_size/long_size; if(type==1) { /* memcpy test */ /* timer starts */ @@ -106,11 +109,11 @@ double worker(unsigned long long asize, long *a, long *b, int type, unsigned lon gettimeofday(&endtime, NULL); } else if(type==2) { /* memcpy block test */ gettimeofday(&starttime, NULL); - for(t=0; t<array_bytes; t+=block_size) { + for (t=array_bytes; t >= block_size; t-=block_size, a+=advance){ b=mempcpy(b, a, block_size); } - if(t>array_bytes) { - b=mempcpy(b, a, t-array_bytes); + if(t) { + b=mempcpy(b, a, t); } gettimeofday(&endtime, NULL); } else { /* dumb test */ |