Michael Will wrote:
Infiniband with DDR is already at 20Gbps over CX4 copper
Over 3 meters cables thick as firehose. 5 meters if you like to play with fire.
There is a time when fiber is the right thing to do. However, WDM solutions are still expensive, it's much cheaper to use several fibers per cable. You can run 12.5 Gbps Ethernet over 200 meters with quad fiber cables which are barely more expensive than single fiber cables (and much thiner than any other cable used today).
Single fiber for 10GigE uses a 4-way WDM to multiplex in one signal. The price premium over a quad fiber transceiver is about $350. It was expected that this premium would disappear, but it's not happening and that's why the quad fiber cable is being ratified as an official 10GigE medium.
Patrick -- Patrick Geoffray Myricom, Inc. http://www.myri.com _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
