On Thu, Nov 13, 2003 at 12:00:35PM -0800, John Korah wrote:
> Hi,
> I am a beginner with LAM, so please bear with me.
>
> I am trying to create a dual-tier network architecture
> with my 64 node cluster.
>
> This particular architecture consists of groups of
> computers called supernodes. The computers within the
> supernode can communicate with latency L1. the
> supernode can communicate with each other with latency
> L2. L2>>L1.
>
> All the computers in my cluster are connected by a
> 100MBPS ethernet link.My question is that how do i
> simulate different link speeds on this flat hierarchy?
If the nodes were running FreeBSD, it would be realativly simple to use
dummynet on the nodes to control the latency between the nodes. If you
really wanted to do this in LAM, I suppose you could write a new RPI
that did that, but that would be a lot of work for an arguably inferior
result.
-- Brooks
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