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 LAA26025 for ; Mon, 22 Nov 1999 11:25:49 -0700 From: Stan Sieler Message-Id: <199911221827.KAA13990@opus.allegro.com> Subject: Re: [parisc-linux] Progress To: dave@hiauly1.hia.nrc.ca (John David Anglin) Date: Mon, 22 Nov 1999 10:27:25 -0800 (PST) Cc: parisc-linux@thepuffingroup.com In-Reply-To: <199911221811.NAA27290@hiauly1.hia.nrc.ca> from "John David Anglin" at Nov 22, 1999 01:11:29 PM MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii List-ID: Re: > Missed this point because of the strange nop. The current addib loop is 3 > instructions. Alignment to a multiple of 16 should be good enough to > ensure that the loop lies within a cache line. This would insert a maximum > of 3 nops before the loop. This would provide a slightly more deterministic > result. > > Also, re the BogoMIPS number, I think this should be (loops_per_sec*3)/2000000 ... This should be timed on a PA-RISC 2.0 machine, just in case. Some of them are really good at apparently doing things twice as fast as you'd expect :) Our K460 gets twice the MIPs you'd expect ... i.e., it executes a simple timing loop at about 360 million instructions per second ... on a single CPU machine with a 180 MHz clock! -- Stan Sieler sieler@allegro.com www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler