Just found this:
http://www.raspberrypi.org/
The ARM11 does not pack much punch, there is no networking (though it should
not be too difficult to add) and it is not even in production yet. But it does
seem fun. Plus, $1000 would get you 40 units ...
Cheers,
-Alan
-Missatge original---
I have been working quite a lot with VBox, mostly for server stuff. I agree it
can be quite impressive, and has some nice features (e.g. do not stop a
machine, sleep it - and wake up pretty fast).
On the other hand, we found that anything that has to do with disk access is
pretty slow, special
Until the guarantee runs out?
Not joking. I'm not very impressed with some of this stuff, either.
-Alan
> Realistically, how long should one expect current 1U servers to last?
Thanks,
David Mathog
mat...@caltech.edu
Manager, Sequence Analysis Facility, Biology Division, Caltech
___
Very interesting, but perhaps a bit of an overkill. How many TFlop/Watt does
that figure out as? :-(
Cheers,
-Alan
-Missatge original-
De: beowulf-boun...@beowulf.org en nom de Eugen Leitl
Enviat el: dv. 12/12/2008 08:56
Per a: i...@postbiota.org; Beowulf@beowulf.org
Tema: [Beowulf]
Hi.
Dunno if this is a bright idea, but what about the power supply temperature?
There are usually no measurements done in there, and a hot power supply could
easily have a thermal fuse that gets tripped.
It maybe worthwhile trying with a different power box, if possible with a
higher
power
You are right, of course. This also explains why all laptops have metal lining
behind their funky (or not) plastic cases.
In my experience of running with cases open, no case at all, or even using a
cardboard boot box as a case (yep, a student brought that in once :D) , the
worst interference
It is much the same in the Debian world. As has been pointed out today, there
are some differences between Ubuntu and Debian as to package versions
(different kernel versions) and artwork packages, but you can often use
packages from a Debian repository with a Ubuntu installation. Perhaps also
Kubuntu-derived? Would Debian not be a better way to go, as in not installing
any graphical stuff unless the user needs it?
As for testing, if you have a workstation with 1-2 Gigs of RAM, perhaps you
could consider a "virtual cluster".
Cheers,
-Alan
-Original Message-
From: [EMAI
Nowadays many exposition halls, restaurants etc. in Europe have stratified wood
beams. These need to be treated with fire retardants by regulation, in which
case they are actually more safe than steel (steel bends and bucles when
warmed).
You could take a look at whatever products they use to
Hi.
Several days ago there was a thread on using a streamlined standard Linux
distribution. These days I have been fiddling with the new Debian Lenny version
(still beta, but it seems not for long).
A "no frills, no X" install with vi, aptitude and a few other rescue tools fits
comfortably i
Ram disks, definately. ;-)
Afraid I'm still going with diskless nodes. You save
1. some money on the disks themselves
2. more money on solving disk failures
3. yet more money on cooling
This may be specially important in a high-density rack situation, where if you
get the disks out of the wa
Good day.
I have been reading the ongoing discussion on network usage with some interest,
mainly because in all (admittedly very small, 4 to 8 node) clusters we have set
up so far, we have always gone with doubling the network. Nowadays we mostly
run a 100 MBit/s "el cheapo" FastEthernet for c
e oil around.
Happy experimentation! Just don't do it with components you value.
-Alan Ward
-Missatge original-
De: [EMAIL PROTECTED] en nom de Peter St. John
Enviat el: dj. 20/09/2007 17:32
Per a: beowulf@beowulf.org
Tema: [Beowulf] overclocking with liquids
A fellow (conc
thout*
getting lost in the murky wilderness of Windows. No pain. ;-)
-Alan Ward
-Missatge original-
De: [EMAIL PROTECTED] en nom de Chris Samuel
Enviat el: dj. 25/01/2007 03:14
Per a: beowulf@beowulf.org
Tema: Re: [Beowulf] An OT patented rgb editorial rant, skip if you like...
Title: RS: [Beowulf] Cluster newbie, power recommendations
I have done this for several years. If you remove the video card, CD/DVD units and other power consumers, leaving just a single hard disk and network, a modern PSU in this range is well capable of handling at least two motherboards.
e recycled: both cheap (!) and politically satisfactory.
This Monday 30th, we've arranged a class day trip to Barcelona to see the Marenostrum at the Barcelona Supercomputing Center - who have been very open and helpful in this respect.
Alan Ward
CS teacher and responsable for ITs
Escola And
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