jwag@moose.sgi.com (Chris Wagner) (05/03/90)
In article <1509@merlin.bhpmrl.oz>, ianh@merlin.bhpmrl.oz (Ian Hoyle) writes: > The new 3xx series literature states that it is possible to mix & match > 25MHz & 33 MHz cpus in the one system. Has anyone any experience with this > yet - ie. are there any gotchas I should know about? > > We have a 240 GTX twin tower, and would like to upgrade to a (2.5)60 VGX rack, > with the original 4 25MHz cpus + 2 new 33 MHz screamers :-) It actually > works out to be more cost effective to do it this way. > > ian > -- > > Ian Hoyle > /\/\ > / / /\ BHP Melbourne Research Laboratories > / / / \ 245 Wellington Rd, Mulgrave, 3170 > / / / /\ \ AUSTRALIA > \ \/ / / / > \ / / / Phone : +61-3-560-7066 > \/\/\/ ACSnet : ianh@merlin.bhpmrl.oz.au > Internet: ianh%merlin.bhpmrl.oz.au@uunet.uu.net There are no 'gotchas' except that if you run parallel code or benchmarks, the timings may be hard to reproduce, depending on what processor a particular thread/ benchmark ran on. If this turns out to be a problem, you may want to specify benchmarks and things to run on a particular CPU using runon(1) Chris Wagner