广域网协议在PC集群系统HPC中的应用分析

Analysis of the Application of The Protocol of WAN in the PC Cluster Computer System HPC

鉴于绝大多数PC集群系统都使用了TCP/IP协议,着重分析了作为分布式进程间通信手段的socket通信机制在Linux中的实现以及传统通信开销中影响性能的主要因素,并针对通信瓶颈,对传统的通信协议栈进行了改进,对广域网协议在PC集群系统中应用的不足之处,提出了改进集群网络性能的方法.

Currently, most PC cluster systems use TCP/IP as the communication protocol. So this paper analyses the mechanism of socket communication between distributed machines in the Linux kernel. The main factors affecting the communication performance in PC cluster system are analyzed in detail. The structure of communicatin protocol stack is ameliorated aiming at the bottleneck. The paper discussed the use of TCP/IP in PC cluster systems, finds out the inapplicability of the TCP/IP in systems and proposes a new way to improve the communication performance.