Perhaps this is why Cray was in Minnesota?
On 9/4/12 9:38 PM, "Joe Landman" wrote:
>On 09/05/2012 12:28 AM, Lux, Jim (337C) wrote:
>
>> But as long as we're talking quarrys and such, what about the scheme of
>> building a big pit to fill full of ice during the winter, and melting it
>> during th
Transformer oil isn't all that big a deal.. You buy it in 5 gallon pails, 55
gallon drums, tank truck lots. Runs about $3-4/gallon in large quantities
(which is what ALL liquids cost, it seems.. Transportation costs are the
dominant component. Sulfuric acid is pretty much the same price as min
On 09/05/2012 12:28 AM, Lux, Jim (337C) wrote:
> But as long as we're talking quarrys and such, what about the scheme of
> building a big pit to fill full of ice during the winter, and melting it
> during the summer. (assuming you are in a
> less-than-wonderful-un-California-like climate where thi
On 9/4/12 3:46 PM, "Vincent Diepeveen" wrote:
>
>Uranium is dirt cheap as well, and i don't refer to mox fuel then,
>yet to the actual
>uranium you (not me of course) can dig up so easily in say Australia
>or Syria;
>dirt cheap if we look at what a central needs a year versus central
>constructi
On 9/4/12 11:54 AM, "Ellis H. Wilson III" wrote:
>On 09/04/2012 12:54 PM, Lux, Jim (337C) wrote:
>> Hydrogen is cheaper than He and works even better. Just make sure you
>>don't have any air leaks in (i.e. keep a bit of positive pressure). For
>>the "server farm in a container" model, this wo
A notable, but non-obvious, hazard of large oil cooled systems (or oil
tanks, for that matter) is that you don't float in them. Fall into a tank
of water, and you're positively buoyant, so all you have to do is keep
your head above water.
Fall into a tank of oil with SG=0.8 and you sink like the p
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On 05/09/12 13:13, Douglas J. Trainor wrote:
> p.s. could a list administrator please somehow delete
> trai...@transborder.net from the list?
Hmm, it would appear not, whilst it appears in the list of subscribers
when I click the button next to it t
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On 05/09/12 13:13, Douglas J. Trainor wrote:
> the problem is the ssl cert issued by Trond Myklebust expired July
> 23…
Indeed, but that doesn't mean it's serving malware.
cheers!
Chris
- --
Christopher SamuelSenior Systems Administrator
the problem is the ssl cert issued by Trond Myklebust expired July 23…
douglas
p.s. could a list administrator please somehow delete trai...@transborder.net
from the list? the mailman database is corrupted/denormalized [or something],
and this is the zombie address that can only receiv
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On 04/09/12 21:38, Vincent Diepeveen wrote:
> That link gets reported here as spreading spyware?
Looks fine to me..
http://www.google.com/safebrowsing/diagnostic?site=bugzilla.linux-nfs.org
- --
Christopher SamuelSenior Systems Administra
Wiki tells me that the flash point of Transformer Oil (a type of mineral
oil) is 140 C; does that sound safe in a server room? I'm a worse chemist
than I am a physicist so I can't tell if you're serious about OSHA not
liking mineral oil in server rooms (I'm **pretty** sure you're not serious
about
On Sep 4, 2012, at 11:04 PM, Ellis H. Wilson III wrote:
> On 09/04/2012 04:59 PM, Joe Landman wrote:
>> On 09/04/2012 12:54 PM, Lux, Jim (337C) wrote:
>>> Hydrogen is cheaper than He and works even better. Just make
>>> sure you don't have any air leaks in (i.e. keep a bit of positive
>>> pr
On Sep 4, 2012, at 10:50 PM, Robert G. Brown wrote:
> On Tue, 4 Sep 2012, Lux, Jim (337C) wrote:
>
>> Hydrogen is cheaper than He and works even better. Just make sure
>> you don't have any air leaks in (i.e. keep a bit of positive
>> pressure). For the "server farm in a container" model, t
On 09/04/2012 04:59 PM, Joe Landman wrote:
> On 09/04/2012 12:54 PM, Lux, Jim (337C) wrote:
>> Hydrogen is cheaper than He and works even better. Just make sure you don't
>> have any air leaks in (i.e. keep a bit of positive pressure). For the
>> "server farm in a container" model, this would w
On 09/04/2012 12:54 PM, Lux, Jim (337C) wrote:
> Hydrogen is cheaper than He and works even better. Just make sure you don't
> have any air leaks in (i.e. keep a bit of positive pressure). For the
> "server farm in a container" model, this would work just fine.. leaks would
> just float up int
On Tue, 4 Sep 2012, Lux, Jim (337C) wrote:
> Hydrogen is cheaper than He and works even better. Just make sure you don't
> have any air leaks in (i.e. keep a bit of positive pressure). For the
> "server farm in a container" model, this would work just fine.. leaks would
> just float up into t
>
> I know we've been taking things to the uber-scale level with this
> conversation, but does anyone have suggestions for small (homebrew
> Beowulf) clusters?
If you live in a cold climate, there's not much difference between a rack
of servers and baseboard electric heat - just limit your dataru
On Sep 4, 2012, at 8:54 PM, Ellis H. Wilson III wrote:
> On 09/04/2012 12:54 PM, Lux, Jim (337C) wrote:
>> Hydrogen is cheaper than He and works even better. Just make sure
>> you don't have any air leaks in (i.e. keep a bit of positive
>> pressure). For the "server farm in a container" mod
On 09/04/2012 02:56 PM, Douglas Eadline wrote:
>
> Of course those massive Zetta scale systems will live in huge
> multi-story oil tanks that have been placed in old quarrys,
> which provide bedrock support for the tank and a geothermal
> heat sink. The sysadmins must operate oil swimming robots an
Of course those massive Zetta scale systems will live in huge
multi-story oil tanks that have been placed in old quarrys,
which provide bedrock support for the tank and a geothermal
heat sink. The sysadmins must operate oil swimming robots and even don
oil scuba suits to service hardware. Don't fo
On 09/04/2012 12:54 PM, Lux, Jim (337C) wrote:
> Hydrogen is cheaper than He and works even better. Just make sure you don't
> have any air leaks in (i.e. keep a bit of positive pressure). For the
> "server farm in a container" model, this would work just fine.. leaks would
> just float up int
On Tue, 4 Sep 2012, John Hearns wrote:
> As this article points out, helium is a finite resource. If all teams
> were using it, there would
> be no advantage to any one team and it would be wasteful of a resource.
> If I'm nto wrong the US Government holds the biggest stock of helium,
> somewhere
On 09/03/2012 08:04 PM, Christopher Samuel wrote:
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>
> On 03/09/12 23:15, Douglas Eadline wrote:
>
>> There was a previous discussion here. Curious to see Intel's
>> interest in this tech. I assumed it is mostly used for edge cases.
> It's going to c
Hydrogen is cheaper than He and works even better. Just make sure you don't
have any air leaks in (i.e. keep a bit of positive pressure). For the "server
farm in a container" model, this would work just fine.. leaks would just float
up into the atmosphere.
@ 300K
Air 26.2 mW/m*K
He 156.7
H2 1
LN2 OTOH is very cheap, easy to make, and there is a potentially
limitless supply (think very large atomospheric reservoir of gaseous N2
we could tap). Just need to replace heat sinks with conduction plates,
and have LN2 run through heat exchangers in bottoms of racks. It won't
short out elec
On Tue, Sep 4, 2012 at 9:29 AM, John Hearns wrote:
> On 4 September 2012 14:16, Robert G. Brown wrote:
>>
>> On a more serious note, one wonders why nobody has tried helium instead.
>> No, silly, not liquid helium, helium gas. The reason they fill windows
>> with argon is that it has around 2/3
On 09/04/2012 09:16 AM, Robert G. Brown wrote:
> Helium, OTOH, has six times the thermal conductivity of air, and is
> relatively inexpensive. The biggest downside I can think of is that it
> requires a pretty good seal and thick walls to keep the slippery little
> atoms from sliding right throug
I read a report somewhere some big CERN type projectmembers were
warnng that other areas
of science shouldn't waste helium, especially not for balloons,
as when it escapes it leaves planet earth and they need
it badly to cool down things and foresee a problem for the far future
as what left pla
On 4 September 2012 14:16, Robert G. Brown wrote:
>
> On a more serious note, one wonders why nobody has tried helium instead.
> No, silly, not liquid helium, helium gas. The reason they fill windows
> with argon is that it has around 2/3 the thermal conductivity of air,
> and hence is a better i
On Mon, 3 Sep 2012, Lux, Jim (337C) wrote:
> I'll bet they have to change it more often than that. This isnt something
> like a pole transformer.
Absolutely. Think of what you can do with a big vat of hot oil handy in
the workspace. Buffalo Wings. French Fries. Chicken. Fish. The
reason nob
On 09/04/2012 06:57 AM, hol...@th.physik.uni-frankfurt.de wrote:
> FYI
>
> https://bugzilla.linux-nfs.org/show_bug.cgi?id=228
>
> Careful with your block sizes when doing DIRECT_IO people :)
Direct IO should work only with 4k and multiple of 4k block sizes. It
does page-at-a-time IO, and doesn't
That link gets reported here as spreading spyware?
On Sep 4, 2012, at 12:57 PM, hol...@th.physik.uni-frankfurt.de wrote:
> FYI
>
> https://bugzilla.linux-nfs.org/show_bug.cgi?id=228
>
> Careful with your block sizes when doing DIRECT_IO people :)
>
> Ta,
>
> Andrew
>
> ___
FYI
https://bugzilla.linux-nfs.org/show_bug.cgi?id=228
Careful with your block sizes when doing DIRECT_IO people :)
Ta,
Andrew
___
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