我已经在Ubuntu中安装了neper，但运行正常，除了一个警告：
WARNING: There is at least one OpenFabrics device found but there are no active ports detected (or Open MPI was unable to use them). This is most certainly not what you wanted. Check your cables,subnet manager configuration,etc. The openib BTL will be ignored for this job.
Local Host: PC_Name
我想知道如何纠正此警告？