Hi All, With your previous suggestions 8 months ago we bought a Tyan S4881 server with 8 dual-core Opteron CPUs with 64GB RAM. Now we will buy new ones (2 more for the time being) and we will eventually planning to form a cluster from these servers, which will have at most 8 boxes. Now, as you guess, the critical question that we seek for the answer is how to interconnect these fat nodes for max efficiency? Our parallel program is heavily loaded with many small-size and large-size P2P communications. I feel that we need a high performance network like Myrinet, IB, or Quadrics, not to waste 1us latency and high bandwidth that we observe betw the 16 CPU cores. If anyone setup such a cluster, can (s)he share his experience with us? In particular I am curious about the answers for *** How many NICs can or should we use per node? (SUN mbs now have 2 PCI-X and 6 PCI-E slots, so we can theoretically insert 6 PCI-E NICs per node!) *** Is the increase in the # of NICs necessarily increases the bandwith, i.e. for example do we have 2 indep. comm links with 2 NICs? Thanks in advance, Tahir Malas Bilkent University Electrical and Electronics Engineering Department
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