International Journal of Networking and Virtual Organisations
Lightweight real-time network communication protocol for commodity cluster systems
EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
HPCS'09 Proceedings of the 23rd international conference on High Performance Computing Systems and Applications
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The CLIC is a lightweight protocol that has recently been proposed for efficient communication in clusters using the Linux Operating System. Besides optimizing communication performance, by reducing the latencies and increasing the bandwidth figures even for short messages, the proposed communication layer also meets other requirements such as multiprogramming, portability, protection against corrupted programs, reliable message delivery, direct access to the network for all applications, etc. In this way, instead of removing the operating system kernel from the critical path and creating a user-level network interface, the operating system support has been optimized to provide reliable and efficient network software, avoiding the TCP/IP protocol stack. The LAM-MPI communication layer has been implemented on top of the proposed protocol and the communication performance has been tested in a cluster of PCs with Linux OS and interconnected with Fast Ethernet.