Date: Sat, 22 Feb 1997 13:59:10 +1100 From: Bruce Evans <bde@zeta.org.au> To: freebsd-hardware@freebsd.org, robsch@robkaos.ruhr.de Subject: Re: Performance problem with P6-200 Message-ID: <199702220259.NAA25747@godzilla.zeta.org.au>
next in thread | raw e-mail | index | archive | help
>The following may be somewhat off topic, but I have some problems with my new >P6NP5 motherboard from ASUS and a PPro-200 (256k). >When I run the C-linpack or other floating point stuff I can't get >more than 14 MFLOPS (with double precision). With single precision >I get 69 MFLOPS which is fine. Is it notmal that the P6 has such a lousy >double precision performance? Perhaps many memory variables are misaligned. I forget whether alignment is important for P5's or P6's or both. Anyway, the only support for double alignment is gcc's -malign-double, which is not the default and not supported by the linker. Bruce
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199702220259.NAA25747>