From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <382C1D65.205953EE@erols.com> Date: Fri, 12 Nov 1999 09:00:05 -0500 From: Erik Winkler Reply-To: ewinkler@erols.com MIME-Version: 1.0 To: happyoscar42@usa.net CC: "Momchil 'Velco' Velikov" , linuxppc-dev@lists.linuxppc.org Subject: Re: [OT] dual 8500 References: <199911121056.CAA08039@marcus.pants.nu> <382B2359.51B1F11A@usa.net> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: I used a dual-180 Daystar card in my 8500 and it worked great. Yes, the memory interleaving did help a lot under Linux as David notes below. You'll want to get an SMP kernel from ftp://borg.mit.edu/pub/linux/ppc/kernels/multiprocessor/ and then compile your own at some point. These kernels worked for me. Erik David Riley wrote: > Brad Boyer wrote: > > > > Momchil 'Velco' Velikov wrote: > > > Does anyone of you have any experience (either good or bad) > > > with PowerMac 8500 with dual-processor card and Linux ? > > > > I have both good and bad experiences with dual processor cards, > > although I was using a 7600. When it works, it is wonderful, but > > it occasionally gets confused in interesting ways. It seems to be > > very sensitive to everything, and I had to rearrange the RAM in > > the slots to get Linux to work. It somtimes requires the MacOS > > extensions to load to reinitialize stuff if it crashes in a bad > > state. It will make Linux much faster, tho. I replaced a 132MHz > > 604 board with a dual 200MHz 604e one and it was a very nice change. > > Oh yes, there is something you should know. When you install the MP > card, you WILL want to interleave your RAM. You'll want to do it > anyways, because the PowerPC is able to do double-bandwidth bursts if > you interleave identically sized dimms. On linux, since the OS runs > both the processors in an efficient manner (unlike the MacOS) this is > more or less required for an MP card. On the MacOS, it will result > mostly in a speed boost (this includes single processors, too). > > > > I intend to obtain one, but I definitely want to run > > > Linux on it. I don't care much if MacOS doesn't work > > > on such a machine. > > > > They work fine in the MacOS, but you won't see much improvement > > on most things. > > In general, the MP cards work better on the MacOS than in linux (most > things do, because almost everything in linux is still more or less > under development). However, only recent versions of the OS even take > advantage of MP cards, and the only MP-enhanced program that I know of > is Photoshop. > > -- > --"Your mouse has been moved. Windows 95 must be restarted for change > to take effect." ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/