Re: [Beowulf] materials for air shroud?

2011-09-16 Thread Lux, Jim (337C)
On 9/16/11 5:35 PM, "Andrew Piskorski" wrote: >On Fri, Sep 16, 2011 at 10:52:04AM -0700, mathog wrote: > >> >>http://www.tyan.com/product_SKU_spec.aspx?ProductType=MB&pid=670&SKU=6000 >>00180 >> >> That would be easy enough to handle by redirecting the hot air >> a few millimeters to the side

Re: [Beowulf] materials for air shroud?

2011-09-16 Thread Greg Lindahl
On Fri, Sep 16, 2011 at 08:35:40PM -0400, Andrew Piskorski wrote: > That makes me wonder why they didn't put all 4 sockets in a row. Then > you could have just put one giant heat sink across all 4; I don't see > any capacitors or such sticking up in the way. It's harder than it looks to get shor

Re: [Beowulf] materials for air shroud?

2011-09-16 Thread Andrew Piskorski
On Fri, Sep 16, 2011 at 10:52:04AM -0700, mathog wrote: > http://www.tyan.com/product_SKU_spec.aspx?ProductType=MB&pid=670&SKU=60180 > > That would be easy enough to handle by redirecting the hot air > a few millimeters to the side with a small plastic "wall". That makes me wonder why they d

Re: [Beowulf] materials for air shroud?

2011-09-16 Thread Prentice Bisbal
On 09/16/2011 12:39 PM, Lux, Jim (337C) wrote: > The same thing applies in microwave and RF design. There's all kinds of > tools out there to do the analysis, but a lot of good design is just > experience and knowing how to put the parts together. So there are these > little companies that specia

Re: [Beowulf] materials for air shroud?

2011-09-16 Thread Lux, Jim (337C)
On 9/16/11 10:52 AM, "mathog" wrote: >Now that I have seen the problem for two sockets, it made me wonder >what >the manufacturers did for 4 socket motherboard designs. Easy enough to >find out. >A Google Image search for: > >"quad socket" motherboard > >shows: some took air flow into acc

Re: [Beowulf] materials for air shroud?

2011-09-16 Thread mathog
Now that I have seen the problem for two sockets, it made me wonder what the manufacturers did for 4 socket motherboard designs. Easy enough to find out. A Google Image search for: "quad socket" motherboard shows: some took air flow into account, and some didn't. There are quad socket mo

Re: [Beowulf] materials for air shroud?

2011-09-16 Thread Lux, Jim (337C)
On 9/16/11 8:35 AM, "Prentice Bisbal" wrote: >Predicting airflow, especially in the turbulent regime, is not trivial, >and not always intuitive. Just ask John Hearns about that. He works for >McLaren's F1 team, and I bet they spend A LOT of computational power >studying the aerodynamics of thei

Re: [Beowulf] materials for air shroud?

2011-09-16 Thread Prentice Bisbal
Predicting airflow, especially in the turbulent regime, is not trivial, and not always intuitive. Just ask John Hearns about that. He works for McLaren's F1 team, and I bet they spend A LOT of computational power studying the aerodynamics of their cars (I'm sure the exact amount is a closely guarde

Re: [Beowulf] materials for air shroud?

2011-09-16 Thread Gus Correa
mathog wrote: > A not so short story about air flow... > > Yesterday I did some experimenting with different baffles and ducts, > each built temporarily > out of the cardboard backs from yellow notepads and held together with > masking tape. (Not worried > about a fire, since it only ran for 10