From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: References: Date: Tue, 30 Nov 2010 11:02:24 -0800 Message-ID: From: David Leimbach To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: multipart/alternative; boundary=0016368e1eed4617b2049649d40d Subject: Re: [9fans] latest minicluster: ARM fun Topicbox-Message-UUID: 86e36e8e-ead6-11e9-9d60-3106f5b1d025 --0016368e1eed4617b2049649d40d Content-Type: text/plain; charset=ISO-8859-1 I think Mitch visited us (MPI Softtech) in Starkville Mississippi, some years ago, telling me about Plan 9 and FreeBSD stuff he was doing. On Tue, Nov 30, 2010 at 9:56 AM, ron minnich wrote: > Here is our latest minicluster design. > > We used the gumstix stagecoach. > > It's nice, 196 Ovaros in a box. We had a number of failed attempts on > an enclosure design: > > http://picasaweb.google.com/rminnich/Strongbox?authkey=Gv1sRgCI6PwZXM57iZ8gE# > > That was my first design, it was really quite compact and fun, and it > was a huge pain to assemble. It hit the basic high points however: 7 > nodes per stagecoach, 7 stagecoaches per shelf, a switch per shelf > that reduced the outgoing enet cables to one. Power was a huge issue; > 5V 80A per shelf, which was not fun. 10 GA wires never are. > > I know at least some people on this list know Mitch Williams. He came > up with this: > > http://picasaweb.google.com/rminnich/StrongboxAtSC10?authkey=Gv1sRgCJbWpcfci73HxwE# > It's quite elegant: self-contained shelves, with power supply, > Rigrunner for fuses, > continues the use of an 8-port switch per shelf, so each shelf has one > 120V power cable and one enet cable coming out. > > Plan 9 is in the works. This is a nice test and development platform > for software. We're going to make the design available in a way that > people can easily build their own. > > ron > > --0016368e1eed4617b2049649d40d Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable I think Mitch visited us (MPI Softtech) in Starkville Mississippi, some yea= rs ago, telling me about Plan 9 and FreeBSD stuff he was doing.



On Tue, Nov 30, 2010 at 9:56 AM,= ron minnich <rm= innich@gmail.com> wrote:
Here is our latest minicluster design.

We used the gumstix stagecoach.

It's nice, 196 Ovaros in a box. We had a number of failed attempts on an enclosure design:
http://picasaweb.google.com/rminnich/Str= ongbox?authkey=3DGv1sRgCI6PwZXM57iZ8gE#

That was my first design, it was really quite compact and fun, and it
was a huge pain to assemble. It hit the basic high points however: 7
nodes per stagecoach, 7 stagecoaches per shelf, a switch per shelf
that reduced the outgoing enet cables to one. Power was a huge issue;
5V 80A per shelf, which was not fun. 10 GA wires never are.

I know at least some people on this list know Mitch Williams. He came
up with this:
http://picasaweb.google.com/rminni= ch/StrongboxAtSC10?authkey=3DGv1sRgCJbWpcfci73HxwE#
It's quite elegant: self-contained shelves, with power supply,
Rigrunner for fuses,
continues the use of an 8-port switch per shelf, so each shelf has one
120V power cable and one enet cable coming out.

Plan 9 is in the works. This is a nice test and development platform
for software. We're going to make the design available in a way that people can easily build their own.

ron


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