I'm working with a university on a cluster using USB 2.0 network bridge cables, cdce(4), for node interconnects. The current "cables" are Acer Labs USB 2.0 Data Link based. Throughput tests indicates a bottleneck at ~74Mbps even with only one cable connected.
I'm interested in knowing if anyone else is using USB 2.0 network bridge cables, specifically the Prolific PL-2501 based versions, and what kindof performance are they getting. If your interested in the project it's a 27 node cluster using dual CPU VIA EPIA DP-310 motherboards, with an additional USB 2.0 board occupying the sole PCI slot. The cluster nodes are interconnected via 6 USB network bridge cables in a 6 way torroidal mesh, to simulate the interconnects of a current design Cray super computer. diana