[KLUG Hardware] Re: EETimes has more on 64-bit PowerPC -- "traditional" Power4 != PowerPC 970

[Bryan J. Smith]

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On Tue, 2002-10-15 at 22:09, Jack Beglinger wrote:
> Not true... Power4 comes in single core (HPC) and dual core (Turbo).
> With speeds of 1.1 and 1.3 GHz. =20

Yes, I _know_ -- *BUT* for the PPC970, IBM has clearly stated it will be
_single_ core-only.  At least that is what many news outlets were
reporting (and didn't the EETimes article confirm???).

> If the pinouts are the same apple could create the motherboard today and=20
> start testing and porting.

I don't think the PPC970 is the same pin-out, but I wasn't at MDF so I
don't know.

> Where these chips are cool....
> Is the interlock between 4 chips.  4 or 8 way processors in a single modu=
le=20
> (MCM)  ie fully SMP without extra chips upto 32 ways.

The PPC970 will be scalable to 16-way, single-core.  So I assume that's
similar to traditional Power4 with dual-cores on-die.

> Nice pictures of 4 chip MCM and 4 MCM in a big layout.  Is actual photos =
on=20
> page 12.  Note: that is year old document, but gives a good over view. Oh=
=20
> and if you need bigger this... the can be setup into clusters, actually o=
ne=20
> suggested way is to setup 16 logic machines and then cluster these.  This=
=20
> way if some thing fails only that subpart shutsdown, gets repaired and=20
> comes back on line.
> http://www.spscicomp.org/ScicomP4/Presentations/Ungaro/BET20118225_S
> cicomP.101001b.pdf
> An even better one... look at this page 12!
> http://esc.dl.ac.uk/DisCo/MEW12/Talks/Follows_IBM1.pdf

Again, this is _not_ a "traditional" Power4, but the new 1.8GHz PowerPC
970 instance with full 32-bit PowerPC compatibility.  I don't think IBM
is putting 32-bit compatibility in all its Power4 series.

--=20
Bryan J. Smith, E.I.            Contact Info:  http://thebs.org
A+/i-Net+/Linux+/Network+/Server+ CCNA CIWA CNA SCSA/SCWSE/SCNA
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