[Beowulf] Max flops to watts hardware for a cluster

Bogdan Costescu bogdan.costescu at iwr.uni-heidelberg.de
Wed Feb 18 09:35:23 EST 2004

On Tue, 17 Feb 2004, William Dieter wrote:

> 23 	Generic Fast Ethernet NIC 	  $8.00 	$184.00

How much in terms of power have you assigned to this item ?
If you really buy a cheap low-end FE NIC, you'll most probably end up 
with a RTL8139 based card. This chip by design puts quite a load on 
the main CPU especially if you use it in a cluster context (=lots of 
network activity). This might increase significantly the power 
consumption or reduce the available flops...

Bogdan Costescu

IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: Bogdan.Costescu at IWR.Uni-Heidelberg.De

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