opps I missed this e-mail... From: Adam Vande More <[email protected]> Subject: Re: How to reproduce: Re: Only 70% of theoretical peak performance on FreeBSD 8/amd64, Corei7 920 Date: Wed, 14 Apr 2010 11:45:04 -0500
> On Wed, Apr 14, 2010 at 11:34 AM, Adam Vande More > <[email protected]>wrote: > >> >> >> >> That's about 67% utilization, turning off HTT drops it more. HTT on the >> newer cores is good, not bad. >> > > Well that was completely contrarty to some tests I'd run when I first got > the cpu. > > With HTT off: > > n: 3000 > time : 44.705516 or 11.760183 > Mflops : 45932.959253 > n: 3100 > time : 50.598581 or 14.270123 > Mflops : 41766.437458 > n: 3200 > time : 55.748192 or 15.780977 > Mflops : 41541.458400 > n: 3300 > time : 62.072217 or 17.441431 > Mflops : 41221.262070 > n: 3400 > > so that's about 79% right there. > > also if I run cpuset on the dgemm then the utilization is basically at the > theoretical max for one core so at least that part is working. > > -- > Adam Vande More _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
