> I am trying to simulate variable latency links on a
> homogenous clusters. Meaning the latency of links
> between certain pairs of computers are larger than
> other links.
>
> Is there any way I can use MPI communication
> primitives to do it? I am using sleep function to do
> it now....
If you are only concerned with measuring the latency of the network (no
particular application) then I recommend using NetPIPE:
http://www.scl.ameslab.gov/netpipe/
It is quite extensive (contains MPI and MPI-2 modules).
Hugh
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