Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site oakhill.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!bellcore!decvax!genrad!panda!talcott!harvard!seismo!ut-sally!oakhill!davet From: davet@oakhill.UUCP (Dave Trissel) Newsgroups: net.micro.16k Subject: Re: Corrigenda (VAX 780 vs mere micros) Message-ID: <353@oakhill.UUCP> Date: Thu, 7-Mar-85 10:30:41 EST Article-I.D.: oakhill.353 Posted: Thu Mar 7 10:30:41 1985 Date-Received: Mon, 11-Mar-85 11:14:50 EST References: <794@sjuvax.UUCP> <5025@utzoo.UUCP> <2342@nsc.UUCP> Reply-To: davet@oakhill.UUCP (Dave Trissel) Organization: Motorola Inc. Austin, Tx Lines: 25 Summary: > This sounds great. However, consider the fact that it takes five to twenty >hours to generate each picture of this resoloution on a VAX 11/780 that has >no other processes running. Now, who is going to be dumb enough to use a >32032 to do something like this? If it's the occasional frame once a month, >I can see it. But nobody's going to do a large number of frames like this on >a regualar basis. Keep in mind that the 32032 is a MICROprocesser. It's not >made for huge jobs. ... > Curt Sampson ihnp4!alberta!jeff Hmmm. I detect some minicomputer elitism here. Just for arguments sake lets say the NS32032 is only one-fourth the power of a 780 VAX. (In reality I'm sure its greater than that for non-floating-point tasks.) Now, if you had a room with four NS32032 systems processing video frames how much would these systems cost versus a room with one 780 VAX? I think its obvious that the micros would win here. [And since I happen to work at Motorola ;-) ] It appears that the MC68020 in a "realistic" system (i.e. memory management and cache) runs at 780 speeds or better for non-floating-point problems such as this one. Now I am not going to project what the costs of '020 systems will be but you can bet your bottom dollar they will not come anywhere near the cost of a VAX 780. Motorola Semiconductor Inc. Dave Trissel Austin, Texas {ihnp4,seismo,gatech,ctvax}!ut-sally!oakhill!davet