> No. > > Believe it or not I spent a long time looking everywhere but the > Casper wiki. Should have thought of that because that's where we got > the Myricom card from. > > Those listed are at the higher end of the price range I've seen. Looks > like ~$10k is the amount I should be prepared to spend.
If you don't need real 10 Gb/s throughput through the switch fabric, you might get away with a cheaper switch. > > Am I right to interpret the XFP ports as something I could convert CX4 > to use with a transceiver? This is a sticky problem. Some (Myricom, at least) cards will *not* power/drive the optical transcievers. We bought some chelsio cards that will drive them. The roaches don't seem to have any problem with it. If you really can do it with ~10 mb/s, maybe use the ROACH's fast ethernet port and a $200 24 port fast ethernet switch? John > > Tom > > On Thu, Aug 5, 2010 at 3:21 PM, Matt Dexter <[email protected]> wrote: >> Hi Tom, >> >> were you aware of these ? >> http://casper.berkeley.edu/wiki/Recommended_10_GbE_Hardware >> http://casper.berkeley.edu/wiki/Equipment_Cables >> Matt Dexter >> >> On Thu, 5 Aug 2010, Tom Downes wrote: >> >>> Casper-folks: >>> >>> Hoping to short-circuit a fair amount of research here in the hope >>> that someone has had to do this already. I'll soon be looking to >>> connect 10-20 ROACH boards by 10 gbe to a data acquisition >>> computer(s). >>> >>> It seems like the smartest way of doing that is getting a 16-port >>> switch or potentially two 8-port switches. But the 10 Gbe port on the >>> ROACH seems to be CX4 which I take to be a less popular connector >>> variety. >>> >>> What kind of switches have ROACH users out there used to connect up a >>> bunch of boards? Are there switches out there to convert CX4 to >>> something with a reach longer than the 15m Wikipedia quotes as the >>> limit of CX4. 15m is very borderline for our needs. >>> >>> The prices seem to vary widely. We do not need network admin tools or >>> anything fancy. In fact our data rates could probably go over 10Mb >>> cabling, but the 10Gbe interface of the ROACH is more convenient from >>> the firmware perspective. This is more of a multiplexer than a switch. >>> >>> Tom >>> >>> >> >> >
