Checkpoint Scheduling for Shared Usage of Burst-Buffers in Supercomputers
Masoud Gholami, Florian Schintke, Thorsten Schütt · 2018
User-defined and system-level checkpointing have contrary properties. While user-defined checkpoints are smaller and simpler to recover, system-level checkpointing better knows the global system's state and parameters like the expected mean time to failure (MTTF) per node. Both approaches lead to non-optimal checkpoint time, intervals, sizes, or I/O bandwidth when concurrent checkpoints conflict and compete for it.