The Topspin cards might not have the power circuitry required for the fiber cables. We might be able to determine this with the PSID info from those cards. Feel free to send me that info directly.
Gilad. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Charles Taylor Sent: Wednesday, December 03, 2008 8:15 AM To: OpenFabrics General Cc: Craig Prescott Subject: [ofa-general] CX4 Optical Cables Operational Question.... We have some storage nodes across the room from our IB switch and reach them with 10M copper cables. These 10M cables have been an ongoing issue for us as they fail (start showing symbol errors) fairly frequently. We decided to start replacing them with fiber (optics imbedded in CX4 connectors) cables. We got a couple of "intel- connect" 20m cables (note that I think Intel sold the business to EMCore). When we installed the first cable yesterday we were surprised to see that we could not get link status on the connection. The HCA in the host is a Cisco/TopSpin "LionCub" (board id=MT_00A0000001). We have some newer (by one year) Mellanox branded HCAs on some other nodes (MHEA28-1TC, Lion cub, board id=MT_02F0110001). When we ran the optical cable from the same switch port to the mellanox HCAs, we got link status and a LID was issued - no problem. We are just wondering if anyone knows what changed between these two card/chip versions such that the optical connectors work transparently with the the mellanox cards but not at all with the TopSpin/Cisco cards. Thanks, Charlie Taylor UF HPC Center _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
