Assuming that you have some control or influence over the network  
connecting these systems then what you are looking for is called  
multicast rsync (http://sourceforge.net/projects/mrsync/)

jim

On Jan 18, 2008, at 10:10 AM, Lucas Nussbaum wrote:

> Hi,
>
> I need to transfer one large file (> 10 GB) over a fast network
> (gigabit), to a set of 40-50 nodes. This transfer is part of a  
> parallel
> installation process, so it happens "almost" at the same time on all  
> the
> nodes, causing a massive bottleneck.

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