[SCore-users] SCORE_RSH and use of ssh instead of rsh

[Bogdan Costescu]

On Mon, 31 Mar 2003, C. Evangelinos wrote:

> But I don't - the "cluster" is just the group's Linux boxes that I
> want to be able to use during idle times for parallel work. Hence they
> have all sorts of cards on them... 

Here you might have a problem... If the cards are not identical, even for 
good-functioning cards, you will probably see differences in timing of 
sending and receiving packets which will lower the overall performance of 
the "cluster". I haven't heard of such clusters, normally the 
desktop computers are taken from a lab where all computers were bought at 
the same time and thus have identical hardware...
I think that in your case the only solution is to invest some money in 
some good network cards for all the computers that will be used in the 
cluster.

-- 
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