[Beowulf] One network, or two?

[Alan Ward]

Good day.

I have been reading the ongoing discussion on network usage with some interest, mainly because in all (admittedly very small, 4 to 8 node) clusters we have set up so far, we have always gone with doubling the network. Nowadays we mostly run a 100 MBit/s "el cheapo" FastEthernet for control, NFS and monitoring, while the faster Gigabit is exclusively for MPI. Applications are CFD, with various levels of granularity.

Anybody care to comment?

-Alan
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