Date: Thu, 24 Jul 1997 12:14:50 +0200 (CEST) From: mickey@deadline.snafu.de (Andreas S. Wetzel) To: Troy Curtiss <troyc@sandy.merix.com> Cc: smp@freebsd.org Subject: Re: user questions Message-ID: <m0wrKv4-00049oC@deadline.snafu.de> In-Reply-To: <freebsd-smp.199707232224.QAA17793@Ilsa.StevesCafe.com> References: <freebsd-smp.199707232224.QAA17793@Ilsa.StevesCafe.com>
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Hi! --- In article <freebsd-smp.199707232224.QAA17793@ilsa.stevescafe.com>, Steve Passe <smp@csn.net> writes: > Hi Steve, > I see you've been working hot & heavy on the SMP FreeBSD stuff. > I may be in a position to buy an MP motherboard here at work, which > would you recommend? Secondly, how far along is the SMP in the way > of process sharing/threading/etc... If I write a program that parallel > tasks (ie... brute forcing password keyspaces), can I put a CPU on each > task/thread/process to effectively double my speed (almost)? I've been running FreeBSD SMP on a dual P5 box (ASUS P65Up5) since about March 97 without having any serious problems with it. I used it to render some animation sequences with Povray 3.0. I splitted the work onto two processes (one rendering all even image numbers and one rendering the odd image numbers). All I can say is that it runs like a breeze. Both povrays run parallel at nearly full single processor speed. Same thing is true for compiling things that support parallel make i.e. SMP kernel. My current kernel configuration takes about 4:59m with -j 8 enabled on a dual P133 and hits at about 180-190 % of single processor speed. Regards, Mickey -- (__) (@@) Andreas S. Wetzel Mail: mickey@deadline.snafu.de /-------\/ Utrechter Strasse 41 Web: http://cenotaph.snafu.de/ / | || 13347 Berlin Fon: <+4930> 456 066 90 * ||----|| Germany Fax: <+4930> 456 066 91/92 ~~ ~~
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