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From Avinash Lakshman <>
Subject Re: Unreliable transport layer
Date Sun, 28 Mar 2010 19:03:58 GMT
I think Open PGM uses IP mulitcast and this is not available in all data
centers. For instance inside FB mulicast across racks is disabled for a
multitude of reasons. However using TCP should not be a major concern as
long as some discipline is in place w.r.t how size of packets are restricted
as you scale to several hundreds of nodes. For instance you could cap the
packet size at 4K post compression and that will let you scale to perhaps a
few thousand nodes.


On Sun, Mar 28, 2010 at 11:40 AM, Ashwin Jayaprakash <> wrote:

> Or, use OpenPGM ( as an alternative? But
> they don't have any Java bindings yet.
> ZeroMQ ( uses this.
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