Use /cpu/present instead of /cpu/online
Use /cpu/present instead of /cpu/online

This seems a little more correct and will likely avoid issues on low power devices that aggressively put CPUs to sleep to save power, see: http://www.ks.uiuc.edu/Research/vmd/mailing_list/vmd-l/22503.html

kimwalisch/primesieve,kimwalisch/primesieve,kimwalisch/primesieve