Run with "taskset -c #" to lock the benchmark to a single CPU.

mattst88@megalith clear_page % time sudo taskset -c 1 ./ev6-prefetch_m 64 
              cycles:     100549 (scaled from 50.0%)
        instructions:     124155 (scaled from 50.0%)
        cache-misses:         63 (scaled from 50.0%)
        mbox-replays:         36 (scaled from 25.0%)
sudo taskset -c 1 ./ev6-prefetch_m 64  9.36s user 0.09s system 99% cpu 9.461 total