Re: [Beowulf] urgent: cost of fire suppression?

2016-04-19 Thread John Hearns
Tim, the water mist type systems looked interesting - and are claimed to do no damage. There is also a university HPC data centre in a rival city to yours not far away, where the server room has argon injected to keep the oxygen level below the point where combustion is not supported. You can work

[Beowulf] Broadwell HPL performance

2016-04-19 Thread John Hearns
I would be grateful for pointers towards HPL performance figures for Broadwell (v4) processors. I ask as I am getting some very good values and I want to do a sanity check! ___ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To c

Re: [Beowulf] urgent: cost of fire suppression?

2016-04-19 Thread Lux, Jim (337C)
And really, really expensive to replace. For just that Montreal Protocol reason. Besides, you have good backups and checkpoints, right? If your cluster catches fire, you order up a new cluster ³from the cloud² and continue work. Doesn¹t Amazon deliver these with big autonomous octocopters now?

Re: [Beowulf] urgent: cost of fire suppression?

2016-04-19 Thread Greg Lindahl
On Tue, Apr 19, 2016 at 07:32:38PM +0200, Per Jessen wrote: > I thought halon gas was the usual choice for datacentres, has that gone > out of fashion? It was quite popular. However, it's not friendly to the ozone layer... which means it's phased out due to the Montreal Protocol. -- greg ___

Re: [Beowulf] urgent: cost of fire suppression?

2016-04-19 Thread Tim Cutts
On 19/04/2016, 18:32, "Beowulf on behalf of Per Jessen" wrote: >William Johnson wrote: > >> Hello, >> >> I can't speak to the cost in dollars, but you my want to define your >> goal in fire suppression. >> Whether you are trying to just save the building or also have hopes >> for data recovery

Re: [Beowulf] urgent: cost of fire suppression?

2016-04-19 Thread Per Jessen
William Johnson wrote: > Hello, > > I can't speak to the cost in dollars, but you my want to define your > goal in fire suppression. > Whether you are trying to just save the building or also have hopes > for data recovery might determine the type of system you employ, be it > plain water sprinkl