Re: [Beowulf] 96 cores in silent and small enclosure

2010-04-13 Thread Mark Hahn
the original question was about wheter 60-65C is a safe operating temperature. I think it's pretty clearly high - whether it's critical depends on how it's measured, the specific chip's specs, etc. but it's not the sort of operating range I'd be aiming for. But there should be possible to save m

Re: [Beowulf] 96 cores in silent and small enclosure

2010-04-13 Thread Jon Tegner
Mark Hahn wrote: I find it strange with this rather large temp range, and 55 seems very low to my experience. Could they possibly stand for something else? Did not find any description of the numbers anywhere on that address. I think you should always worry about any temperature measured on a

Re: [Beowulf] 96 cores in silent and small enclosure

2010-04-13 Thread Mark Hahn
I find it strange with this rather large temp range, and 55 seems very low to my experience. Could they possibly stand for something else? Did not find any description of the numbers anywhere on that address. I think you should always worry about any temperature measured on a system that's in

RE: [Beowulf] 96 cores in silent and small enclosure

2010-04-13 Thread Lux, Jim (337C)
> -Original Message- > From: beowulf-boun...@beowulf.org [mailto:beowulf-boun...@beowulf.org] On > Behalf Of Mark Hahn > Sent: Tuesday, April 13, 2010 8:38 AM > To: beowulf@beowulf.org > Subject: Re: [Beowulf] 96 cores in silent and small enclosure > > > warranty term on most computers is

Re: [Beowulf] 96 cores in silent and small enclosure

2010-04-13 Thread Mark Hahn
warranty term on most computers is no greater than a year, a 2 year design life might be reasonable. hard to tell exactly what actuarial voodoo they do. I noticed AMD's cpus are waranteed for 3 years. whether they shave the tolerances by recognizing that lots of cpus are used for shorter liv

Re: [Beowulf] 96 cores in silent and small enclosure

2010-04-13 Thread Lux, Jim (337C)
On 4/12/10 11:18 PM, "Jon Tegner" wrote: >> >> >> I think a fair amount of study is needed to really understand the thermal >> management of these devices. In many ways, doing it for a modern processor >> is like doing it for a whole PC board with lots of parts. You've got >> different