| Abstract: | This paper describes a compiler-based approach to checkpointing for process recovery. The implementation is transparent to both the programmer and the hardware. The compiler-generated sparse potential checkpoint code maintains the desired checkpoint interval. Adaptive checkpointing reduces the size of the checkpoints. Training is used to select low-cost, high-coverage potential checkpoints. The problem of selecting potential checkpoints is shown to be NP-complete, and a heuristic algorithm is introduced that determines a quick suboptimal solution. These compiler-assisted checkpointing techniques have been implemented in a modified version of the GNU C (GCC) compiler. Experiments involving the modified version of the GCC compiler on a Sun SPARC workstation are summarized. |
