Remote direct memory access

Remote Direct Memory Access (RDMA) is a concept whereby two or more computers communicate via Direct Mmemory Access access directly from one system to another. As there is no protocol stack overhead, this is particularly useful in applications where low latency networking is needed such as massively parallel linux clusters. The most common RDMA implementation is over Infiniband. Although RDMA over Infiniband is technologically superior to most alternatives, it faces an uncertain commercial future.