John R Pierce wrote: > Stephan Grupp wrote: >> I have a Dell workstation with 2 processors (quad Xeons, total 8 cores, >> 4GB of RAM). Empirically, I have found that the "breakeven" point is 5 >> instances of Prime 95 - if I go past 5 instances, I lose so much >> iteration time on all running instances that my total throughput drops. >> > > the bottleneck is likely memory bus bandwidth. 8 instances of prime95 > hammering on your memory system is a LOT of accesses/second...
Hence, for maximum throughput, try running two threads per instance for four instances?... Regards, Martin _______________________________________________ Prime mailing list [email protected] http://hogranch.com/mailman/listinfo/prime
