SCHEDULE: NOV 10-16, 2012
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Design and Modeling of a Non-Blocking Checkpointing System
EVENT TYPE: Papers
TIME: 2:30PM - 3:00PM
SESSION CHAIR: Frank Mueller
AUTHOR(S):Kento Sato, Adam Moody, Kathryn Mohror, Todd Gamblin, Bronis R. de Supinski, Naoya Maruyama, Satoshi Matsuoka
As the capability and component count of PFS systems increase, the MTBF correspondingly decreases. Typically, applications tolerate failures with checkpoint/restart using a PFS. While simple, this approach suffers from high overhead due to contention for PFS resources. A promising solution to this problem is multi-level checkpointing. However, while multi-level checkpointing is successful on today’s machines, it is not expected to be sufficient for exascale class machines, where the total memory sizes and failure rates are predicted to be orders of magnitude higher. Our solution to this problem is a system that combines the benefits of non-blocking and multi-level checkpointing. In this paper, we present the design of our system and a model describing its performance. Our experiments show that our system can improve efficiency by 1.1 to 2.0 × on future machines. Additionally, applications using our checkpointing system can achieve high efficiency even when using a PFS with lower bandwidth.
Frank Mueller (Chair) - North Carolina State University
Kento Sato - Tokyo Institute of Technology
Adam Moody - Lawrence Livermore National Laboratory
Kathryn Mohror - Lawrence Livermore National Laboratory
Todd Gamblin - Lawrence Livermore National Laboratory
Bronis R. de Supinski - Lawrence Livermore National Laboratory
Naoya Maruyama - RIKEN
Satoshi Matsuoka - Tokyo Institute of Technology