CDC thingy (was Re: About the Wang '669 patent)

From: Huw Davies <H.Davies_at_latrobe.edu.au>
Date: Sun Apr 26 21:17:32 1998

At 11:01 AM 25-04-98 -0400, William Donzelli wrote:

>I think Seymour Cray was a bit to blame as well, as his machines were also
>very fast, but lacking in some areas. The Cray-1s have quite a limitted
>memory, and no virtual memory behind it, making problems with very large
>sets of data difficult.

I understood that the lack of virtual memory was a conscious design
decision. If you want the best available memory throughput, the last thing
you need to do is add an additional layer of memory translation and even
worse, page faults. If you want to process large datasets either buy more
memory or decompose your problem (neither of which are easy or cheap...)

 Huw Davies | e-mail: Huw.Davies_at_latrobe.edu.au
 Information Technology Services | Phone: +61 3 9479 1550 Fax: +61 3 9479
1999
 La Trobe University | "My Alfa keeps me poor in a monetary
 Melbourne Australia 3083 | sense, but rich in so many other ways"
Received on Sun Apr 26 1998 - 21:17:32 BST