source The name and path of the source file to copy.
server The name or address of the destination server.
:destination
An optional destination filename and path. If not given, the destination filename will match that
of the source.
-p server_port
The server's port number.
NOTES Basic usage is to start rcopy on a server system, then run rcopy sourcefile servername. The
server application will continue to run after copying the file, but is currently single-threaded.
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.