Triprocessor PDP-10 [Was: Re: [multicians] Emacs humor]

Rich Alderson RichA at
Wed Dec 2 12:47:12 CST 2015

From: Pontus Pihlgren
Sent: Wednesday, December 02, 2015 12:19 AM

> On Wed, Dec 02, 2015 at 02:13:06AM +0000, Rich Alderson wrote:

>>     KL-10/PDP-10/PDP-6 triprocessor, and KL-10/PDP-10 dual processor and

> You make it sound like someone hacked up a computer consisting of one 
> KL-10, one PDP-10 and one PDP-6. But I assume you mean homogenic 
> three-processor machines?

You assume incorrectly.  I mean exactly what it sounds like.

> Who, besides Peter Löthberg, ran threeprocessor machines?

Lots of places.  The folks at Oak Ridge ("Atomic City") ran a 5-processor
SMP configuration.

> Also, what are you refering to as PDP-10? KA-10?

Yes.  Eric Smith was incorrect in his identification of the processor as a


Rich Alderson
Vintage Computing Sr. Systems Engineer
Living Computer Museum
2245 1st Avenue S
Seattle, WA 98134

mailto:RichA at

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