I've recently upgraded my Infiniband HCAs from SDR to DDR, however upon upgrading, it has not improved the link speed at all. Receiving the following output from 'iblinkinfo':
CA: ip-san-1-au3a mthca0: 0x0008f104039812b5 3 1[ ] ==( 4X 2.5 Gbps Active/ LinkUp)==> 4 1[ ] "sp-vmh-1a-au3a mthca0" ( Could be 5.0 Gbps) CA: sp-vmh-1a-au3a mthca0: 0x0008f10403981435 4 1[ ] ==( 4X 2.5 Gbps Active/ LinkUp)==> 3 1[ ] "ip-san-1-au3a mthca0" ( Could be 5.0 Gbps)
I've searched around for some answers but unable to get any closer to solving this. Has anyone seen this issue before? I am using a Belkin CX4 10M cable to link the two servers together which is apparently capable of SDR/DDR speeds, and running CentOS using the packaged Infiniband drivers.
Any advice or direction on the issue would be great! I'm hoping someone's seen this before and it's an easy answer... cheers!