> > The rdma_cm will automatically allocate one PD per RDMA device. You can > share this PD among multiple connections. To use this PD, pass in NULL into > rdma_create_qp(). The rdma_cm_id will reference the shared PD. > > That's great to know; thanks Sean (and everyone else who confirmed > that a shared PD and possibly CQ is the way to go). Is there a way to > reference this shared PD in ibv_reg_mr() as well? It seems that using > NULL there too is not the solution, and I'm having difficulty tracing > back from struct rdma_cm_id to find out where that shared PD is > stored. I'd prefer to use this solution for simplicity's sake, so any > additional details would be greatly appreciated. For what it's worth, > I tried passing NULL to rdma_create_qp() as you suggested, and found > it to work admirably.
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