[Beowulf] specific motherboard???

Gerry Creager gerry.creager at tamu.edu
Fri Dec 7 23:46:44 EST 2007


Nothing hard but our subjective evaluation running WRF and MM5 showed a 
notable improvement in overall wall-clock time-to-completion.

gerry

Mark Hahn wrote:
>> DX38BT have a 82566DC Gigabit controller, that isn't capable of jumbo 
>> frames
>> (frame size is limited to 1500 bytes).
>> But S3200SH have a 82566 controller too and a  82541PI that support jumbo
>> frames up to 16kb (probably your switch will support frames up to 10kb).
> 
> do you have any data showing that jumbo frames will make a significant
> difference?  yes, they will reduce interrupt-handling overhead (and perhaps
> other overheads), but those tend to be fairly minor concerns on modern,
> obscenely-fast cores...
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-- 
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University	
Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983
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