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devel / comp.arch / Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987

SubjectAuthor
* Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987Al Kossow
`* Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987Al Kossow
 `* Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987luke.l...@gmail.com
  `- Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987luke.l...@gmail.com

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Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987

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Subject: Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987
From: aek...@bitsavers.org (Al Kossow)
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 by: Al Kossow - Fri, 8 Jul 2022 14:01 UTC

On Wednesday, June 29, 2022 at 1:40:22 AM UTC-7, luke.l...@gmail.com wrote:
> folks i am embarrassed to say that after considering myself to have
> become somewhat of an afficionado of Vector ISAs, there is one i
> have only just come across, called the ETA10-Q:

you can find a decent technological history of ETA here
https://ethw.org/First-Hand:The_First_CMOS_And_The_Only_Cryogenically_Cooled_Supercomputer

The ETA10-Q was an air-cooled lower performance machine
P 24nS cycle time 750MFLOPS
Q 19nS cycle time 947MFLOPS
E 10.5nS cycle time 6858MFLOPS
G 7nS cycle time 10286MFLOPS

we have an ETA10 in the CHM collection

https://www.computerhistory.org/collections/catalog/X1691.99B

Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987

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Subject: Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987
From: aek...@bitsavers.org (Al Kossow)
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 by: Al Kossow - Fri, 8 Jul 2022 14:20 UTC

> you can find a decent technological history of ETA here
> https://ethw.org/First-Hand:The_First_CMOS_And_The_Only_Cryogenically_Cooled_Supercomputer
>
also, the papers in
http://bitsavers.org/pdf/cdc/cyber/cyber_200/Programming_Methodology_for_CDC_CYBER_205_Vector_Processor_Aug80.pdf

Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987

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Subject: Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987
From: luke.lei...@gmail.com (luke.l...@gmail.com)
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 by: luke.l...@gmail.com - Fri, 15 Jul 2022 14:50 UTC

On Friday, July 8, 2022 at 3:20:56 PM UTC+1, Al Kossow wrote:
> > you can find a decent technological history of ETA here
> > https://ethw.org/First-Hand:The_First_CMOS_And_The_Only_Cryogenically_Cooled_Supercomputer
> >
> also, the papers in
> http://bitsavers.org/pdf/cdc/cyber/cyber_200/Programming_Methodology_for_CDC_CYBER_205_Vector_Processor_Aug80.pdf

Al, and John, thank you so much. the computer history museum very kindly
scanned the ETA10 ISA document and made it available for anyone to access.
i'm astounded and delighted that they were able to respond so quickly on
such a rare and historic machine.

l.

Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987

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Subject: Re: .ETA10 system reference manual, PUB-1005, ETA Systems, Inc., 1987
From: luke.lei...@gmail.com (luke.l...@gmail.com)
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 by: luke.l...@gmail.com - Sun, 24 Jul 2022 11:01 UTC

i took a quick look and my initial assessment is that ETA10 had a Scalable (variable-length)
Memory-to-Memory Vector ISA

* Page 3-220 of its ISA shows that it had Predicate Masks and Horizontal Reduction.

* Vector operands were designated A,B (source) and C (destination)

* Appendix H-1 shows it is likely a Memory-to-Memory Vector Architecture, and overcame the
penalties normally associated with this by adding an explicit "Vector operand forwarding/chaining"
instruction (Page 3-69). It is however clearly Scalable, up to Vector elements of 2^16.

i'm profoundly astonished.

l.

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