infiniband相关的几种协议

uDAPL：
--uDAPL is a transport neutral infratructure that provides RDMA capabilities in user space.
it is a specification and a library that defines a single set of user APIs for all 
RDMA-capable transports.
--User Direct Access Programming Library (uDAPL) is a standard API that
promotes data center application data messaging performance, scalability,
and reliability over Remote Direct Memory Access (RDMA) capable interconnects
such as InfiniBand.
DAT: 
--Direct Access Transport(DAT) 

OFED: 
--OnenFabircs Enterprise Distribution

SDP:
---是infiniband结构中基于RDMA(远程直接内存访问)的轻量级通信协议 它保持了传统的TCP/IP上的
SOCK_STREAM套接字语法 支持消息传递协议中的字节流 通过旁路操作系统内核 实现了零拷贝 减少了CPU的负载
从而能大大提高数据传输速率。