Date: Mon, 10 Aug 1998 10:46:31 +0930 From: Greg Lehey <grog@lemis.com> To: djv@bedford.net Cc: freebsd-chat@FreeBSD.ORG Subject: Re: FreeBSD Message-ID: <19980810104631.O11095@freebie.lemis.com> In-Reply-To: <199808100006.UAA07079@lucy.bedford.net>; from djv@bedford.net on Sun, Aug 09, 1998 at 08:06:41PM -0400 References: <19980810083046.K11095@freebie.lemis.com> <199808100006.UAA07079@lucy.bedford.net>
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On Sunday, 9 August 1998 at 20:06:41 -0400, djv@bedford.net wrote: >> No, Stretch was the 7030, and predated the 360/<anything> by a number > > Ah, yes. > >> of years. Supposedly the first machine to achieve 1 MIPS, but it >> didn't quite make it. >> >>> was quite snappy in its time. The apps I ran (numerical) were by >>> definition CPU bound, anyway. This was a 2 of a kind unit (one for >>> NSA, one for Los Alamos IIRC), with a hotrod CPU and a big load of >>> memory, how much I've forgotten (128MB? More?), which IIRC was made >>> of discrete transistors. > > Small ICs then. Oh well. I don't even know if it was air or water > cooled. What would you estimate for bits/chip? No idea. I've never seen one of them. If it was MOS, I'd guess 256 bits. Could be as high as 1024. >> I've never heard of discrete transistor memory of any size. The >> System/360 was the first machine in the world to use integrated >> circuits in a serious way, but it's possible they made exceptions in >> strange machines like the 360/195. > > When they broke up the /195, I had a chance to get a memory board > as a souvenir, but I was sick of it by then. Should have got one! > There were /lots/ of them. The thing filled a very large computer > installation. (disk farm, rows of tape drives, line printers, > (I think they even had a page printer of some kind on it), terminal > equipment, card readers/punches). Right. I still have some old 370/158 boards floating around somewhere. They're *very* different from other manufacturer's boards. They were using surface mount even then, and they were all in square cases with aluminium covers. >>> I think it was faster than its contemporaries in the 370 series. The >>> Navy kept it running until ~1986, I believe the power bill was why >>> they shut it down. :-) (It was at the PAX NATC in S. Maryland). >> >> Yes, the 360/195 wasn't really a 360 (all other 360s had model numbers >> under 100, all 370s over 100). I've forgotten the details, but for a >> 360 it really moved. It probably had over 1 MIPS. > > Oh, more than that I think. It was definitely faster than a VAX > 11/780. It may have gone through CPU upgrades while at NSA, too. > (I didn't meet it until around 1980, when it had gone to the Navy.) > It's also possible that the original specs were deliberately > understated, too. I don't think they would have understated the specs of the /195. It's known that they did for other processors (ISTR that the 370/145 and /155 were the same processor bar the clocking, but my memory could be defective). But the /195 was to show just how fast they could be. Greg -- See complete headers for address and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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