Abstract: Comparing GPU and Increment-Based Checkpoint Compression

In previous work, we developed a checkpoint compression viability model based on compression factor, compression speed and I/O bandwidth that outputs when checkpoint data compression yields performance improvements. We evaluated the impact of checkpoint compression on overall application performance using an extension of Daly´s model. This evaluation was based on CPU-based checkpoint compression performance and demonstrated that checkpoint data compression can improve an application makespan significantly. Now, we compare compression-based and increment-based optimizations and begin to explore how GPU-based checkpoint compression might further improve checkpoint/restart performance.