[Beowulf] Re: Purdue Supercomputer

[Joel Jaeggli]

Karen Shaeffer wrote:
> On Sun, May 11, 2008 at 02:45:05AM -0400, Mark Hahn wrote:
>>>> I find that with IPMI and console redirection, it's very rarely necessary 
>>>> to
>>>> care about where your nodes are, at least from a sysadmin perspective.
>>> Speaking of IPMI, are there reasonable motherboards that incorporate
>>> it right into the design at this point, or is it still mostly an add
>>> on?
>> bit of both - supermicro and tyan both rely on add-in cards, but
>> HP (and probably some other vendors) have integrated IPMI onboard.
>> I keep reading stuff from Intel and AMD about managability which 
>> sounds tantalizingly like IPMI-like managability being integrated 
>> into the chipset.
>>
>> I think the main issue is that ipmi needs a lan interface, though 
>> I guess there are some examples of it sharing a port with the host.
> 
> 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.

> Thanks,
> Karen