Grid-Oriented Process Clustering System for Partial Message Logging

In a computer cluster composed of many nodes, the mean time between failures becomes shorter as the number of nodes increases. This may mean that lengthy tasks cannot be performed, because they will be interrupted by failure. Therefore, fault tolerance has become an essential part of high-performance computing. Partial message logging forms clusters of processes, and coordinates a series of checkpoints to log messages between groups. Our study proposes a system of two features to improve the efficiency of partial message logging: 1) the communication log used in the clustering is recorded at runtime, and 2) a graph partitioning algorithm reduces the complexity of the system by geometrically partitioning a grid graph. The proposed system is evaluated by executing a scientific application. The results of process clustering are compared to existing methods in terms of the clustering performance and quality.