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CentOS 7.0 - man page for rdma_client (centos section 1)

RDMA_CLIENT(1)							     librdmacm							    RDMA_CLIENT(1)

rdma_client - simple RDMA CM connection and ping-pong test.
rdma_client [-s server_address] [-p server_port]
Uses synchronous librdmam calls to establish an RDMA connection between two nodes. This example is intended to provide a very simple cod- ing example of how to use RDMA.
-s server_address Specifies the address of the system that the rdma_server is running on. By default, the client will attempt to connect to the server using -p server_port Specifies the port number that the server listens on. By default the server listens on port 7471.
Basic usage is to start rdma_server, then connect to the server using the rdma_client program. Because this test maps RDMA resources to userspace, users must ensure that they have available system resources and permissions. See the libibverbs README file for additional details.
rdma_cm(7), udaddy(1), mckey(1), rping(1), rdma_server(1) librdmacm 2010-07-19 RDMA_CLIENT(1)