[Beowulf] Re: Purdue Supercomputer

[Karen Shaeffer]

On Sun, May 11, 2008 at 12:42:18PM -0700, Joel Jaeggli wrote:
> Karen Shaeffer wrote:
> >Hi,
> >To implement full IPMI capability on the system board, then you need
> >two separate and independent power distribution systems on the system
> >board I believe, which is why they implement IPMI with a daughterboard.
> 
> +5volt standby from the atx power supply is used to provide wake-on-lan 
>   functionality and power a ipmi implementation. it is available when 
> the system is otherwise off.
> 
Hi Joel,
Yes, but a separate and distinct power distribution for that +5 volt
supply will then need to be implemented on the system board to support
a full IPMI implementation residing on the system board. That was my
point. You are confusing power source with implemented PCB power
distribution.

Thanks,
Karen
-- 
 Karen Shaeffer
 Neuralscape, Palo Alto, Ca. 94306
 shaeffer at neuralscape.com  http://www.neuralscape.com