We have a problem that we want to build the infiniband. But we can’t reach the rational speed of 40Gps. We just reach 6.5Gps. We subscribe some websites on the mellanox community, and they suggest that it may be the cable problem. However, we haven’t dedicated infiniband-cable yet. So Must we use the dedicated infiniband-cable?? Can we just use some non-infiniband-cables that support the speed of 40Gps?
Our adapter is Mellanox ConnectX-3 Adapters (link speed: 40Gps). But our active-speed is just 10Gps. We have no idea about the meaning of active-speed ? We search this word(active-speed) on the Internet, but we fail to find the appropriate explaination, Can someone explain it to us?