关键词: 高性能计算 集群互连 用户级通讯 RDMA

Abstract:

In this paper, we describe the implementation of a communication software interface which is based on a PCI- X high-speed communication card. This interface virtualizes hardware resources, implements protected user-level communication operations, and provides two data transferring modes：packet send/r receive and RDMA. Zero copy data transferring can be executed between processes, and IP packets can be transferred through this interface too. In the te sts, we get a maximum 500 MB/s bandwidth between two cards,and a 1003 MB/s bandwidth when we use two rails. We also get a maximum 384 MB/s bandwidth based on the Socket interface.

Key words: （high-performance computing, cluster interconnection, user-level communication, RDMA）