From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailserv2.iuinc.com (qmailr@mailserv2.iuinc.com [206.245.164.55]) by puffin.external.hp.com (8.8.7/8.8.7) with SMTP id XAA23907 for ; Mon, 18 Oct 1999 23:30:30 -0600 Message-Id: <199910190531.WAA27190@milano.cup.hp.com> To: Alex deVries cc: parisc-linux@thepuffingroup.com Subject: Re: [parisc-linux] different PA2.0 CPUs in the same box? In-reply-to: Your message of "Mon, 18 Oct 1999 19:03:33 PDT." Date: Mon, 18 Oct 1999 22:31:15 -0700 From: Grant Grundler List-ID: Alex deVries wrote: > > Can you mix and match different PA2.0 CPUs in a multiprocessor box? > An 8000 and an 8200? And HP hasn't mix/matched processor clock frequency's in one box either. 870 (4-way/PA1.0/CIO) I think had something funny about the clocks which I think was repeated in the T-class and possible planned in newer architectures. Can anyone shed more light on this? Minimizing clock drift of the various processors in an SMP box is a difficult problem. Keeping accurate time is important but synchronization of processors too often can really hurt performance. grant Grant Grundler Communications Infrastructure Computer Operations +1.408.447.7253