I think there are two questions here:
1. Running MPI applications on "slow" networks (e.g., 100mbps). This is
very much application-dependent. If your MPI app doesn't communication with
other processes much, then it probably won't matter. If you have
latency/bandwidth-sensitive applications, the
Its doable, the scaling will not as good, because a network is a
network. If you are using just regular 100Mbit, you will not scale
as far as really good 1gig ethernet, but we are still talking about
tcp which incurs a penalty over networks like infiniband and myrinet.
Tcp is the largest is
