A synchronized real-time linux based myrinet cluster for deterministic high performance computing and MPI/RT
M. Apte, Sangapu Sreenivasa Chakravarthi, J. Padmanabhan, Anthony Skjellum · 2005
This paper describes the design and implementation of a real-time cluster of PCs that provides globally synchronized scheduling and predictable messaging passing. A high-accuracy, fine-grain global clock implementation has been closely coupled with a time-based scheduler to facilitate finely synchronized global scheduling across the cluster. A real-time messaging layer provides predictable communication latencies over the interconnecting Myrinet network. This system provides a solid framework for QoS based real-time communication, and in particular facilitates efficient layering of high-performance real-time distributed middleware such as MPI/RT. We present experiments and results to demonstrate the degree of predictability and synchronization achieved on an 8-node Myrinet cluster. 1 Introduction It is well known that clusters of commodity workstations are becoming a popular low cost alternative to super-computers for high-performance distributed computing [3]. Such systems also offe...