Re: The Seymour Cray Era of Supercomputers

On Tue, 20 May 2025 5:40:23 +0000, Lawrence D'Oliveiro wrote:

On Mon, 19 May 2025 18:14:17 +0000, MitchAlsup1 wrote:
>

CDC 6600 was built with (effectively) RTL logic using individual parts
{transistors, resistors, capacitors, ...} well documented in "design of
a computer" Thornton.
>
CDC 7600 was built with some kind of integrated circuits, but not TTL or
ECL. I don't remember which (its been too long).

>
What happened with the 8600? That was the project Seymour Cray
abandoned,
when he left CDC to form Cray Research.

CDC had the following choices::
a) continue with Star 100
b) continue with 8600
c) can Star
d) can 8600
e) can both
It can be argued that they did what was best for CDC.
It can also be argued that they chose poorly.
Cray was "a bone" to work with.