Metadata only
Date
2014-06Type
- Conference Paper
ETH Bibliography
yes
Altmetrics
Abstract
Remote Memory Access (RMA) is an emerging mechanism for programming high-performance computers and datacenters. However, little work exists on resilience schemes for RMA-based applications and systems. In this paper we analyze fault tolerance for RMA and show that it is fundamentally different from resilience mechanisms targeting the message passing (MP) model. We design a model for reasoning about fault tolerance for RMA, addressing both flat and hierarchical hardware. We use this model to construct several highly-scalable mechanisms that provide efficient low-overhead in-memory checkpointing, transparent logging of remote memory accesses, and a scheme for transparent recovery of failed processes. Our protocols take into account diminishing amounts of memory per core, one of the major features of future exascale machines. The implementation of our fault-tolerance scheme entails negligible additional overheads. Our reliability model shows that in-memory checkpointing and logging provide high resilience. This study enables highly-scalable resilience mechanisms for RMA and fills a research gap between fault tolerance and emerging RMA programming models. Show more
Publication status
publishedExternal links
Book title
Proceedings of the 23rd International Symposium on High-Performance Parallel and Distributed Computing (HPDC'14)Pages / Article No.
Publisher
Association for Computing MachineryEvent
Organisational unit
03950 - Hoefler, Torsten / Hoefler, Torsten
More
Show all metadata
ETH Bibliography
yes
Altmetrics