From: Grant Grundler <grundler@parisc-linux.org>
To: Matthew Wilcox <willy@debian.org>
Cc: Derek Engelhaupt <derekengelhaupt@rocketmail.com>,
Joel Soete <soete.joel@tiscali.be>,
parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] L2000/N4000 smp devices/boot compare??
Date: Mon, 6 Oct 2003 08:31:44 -0600 [thread overview]
Message-ID: <20031006143144.GA19370@dsl2.external.hp.com> (raw)
In-Reply-To: <20031003001810.GH24824@parcelfarce.linux.theplanet.co.uk>
On Fri, Oct 03, 2003 at 01:18:10AM +0100, Matthew Wilcox wrote:
> I once downloaded an N-class PDF which I've subsequently lost.
> If I remember correctly, it looked like:
>
> CPU --+-- CPU RAM CPU --+-- CPU
> DEW ||||| DEW
> +--------+--------+---- Stretch ----+--------+------+
> IKE DEW DEW IKE
> ||||| CPU --+-- CPU CPU --+-- CPU |||||
> Ropes Ropes
>
> (Elroys on the end of the ropes, of course).
I thought Ike was hanging off of "Stretch" like this:
CPU --+-- CPU RAM CPU --+-- CPU
DEW ||||| DEW
+----------------- Stretch ----------------+
DEW | | DEW
CPU --+-- CPU IKE IKE CPU --+-- CPU
||...|| ||...||
12 ropes 12 ropes
DEW == Runway to Merced bus converter
IKe == I/O Controller (DMA Coherency and IO MMU)
10 PCI slots are "Twin Turbo" (Double Rope) and two are "Turbo" (singl
rope). "Core I/O" gets the remaining two ropes.
However, the original N-class has been replaced with rp7410.
Not sure if when the switchover took place.
rp7410 is now kin to Superdome (HalfDome) and rp8400 (QuarterDome)
and is based on a follow-on chipset.
URL's here:
http://www.hp.com/products1/servers/mid_range/index.html
http://www.hp.com/products1/servers/rackoptimized/rp7410/infolibrary/rp7410_wp.pdf
grant
ps. We are completely under representing the complexity of "RAM" and all
the memory controllers that made this such a hot box 4 years ago.
next prev parent reply other threads:[~2003-10-06 14:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-02 16:53 [parisc-linux] L2000/N4000 smp devices/boot compare?? Joel Soete
2003-10-02 23:38 ` Derek Engelhaupt
2003-10-03 0:18 ` Matthew Wilcox
[not found] ` <3F704CAF0000522B@ocpmta2.freegates.net>
2003-10-03 11:49 ` Matthew Wilcox
2003-10-14 16:59 ` Joel Soete
2003-10-15 4:52 ` Grant Grundler
2003-10-15 6:02 ` Joel Soete
2003-10-06 14:31 ` Grant Grundler [this message]
[not found] <3F8A29A2000021FB@ocpmta1.freegates.net>
[not found] ` <20031017023038.GA12379@colo.lackof.org>
[not found] ` <3F9193E7.9010504@tiscali.be>
[not found] ` <20031018220048.GC10704@colo.lackof.org>
2003-10-18 23:30 ` Joel Soete
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