A Tunable, Software-based DRAM Error Detection and Correction Library for HPC
By:
Fiala, David J; Ferreira, Kurt; Mueller, Frank; Engelmann, Christian
Page Number:
251-261
Volume:
7156
Book Title:
Lecture Notes in Computer Science: Proceedings of the 17th European Conference on Parallel and Distributed Computing (Euro-Par) 2011 Workshops, Part II: 4th Workshop on Resiliency in High Performance Computing (Resilience) in Clusters, Clouds, and Grids
Publication Date:
June 2012
Publisher Location:
Springer Verlag, Berlin, Germany
Conference Name:
4th Workshop on Resiliency in High Performance Computing (Resilience) in Clusters, Clouds, and Grids 2011
Conference Location:
Bordeaux, France
Abstract
Proposed exascale systems will present a number of
considerable resiliency challenges. In particular, DRAM
soft-errors, or bit-flips, are expected to greatly increase
due to the increased memory density of these systems.
Current hardware-based fault-tolerance methods will be
unsuitable for addressing the expected soft error frequency
rate. As a result, additional software will be needed to
address this challenge. In this paper we introduce LIBSDC,
a tunable, transparent silent data corruption detection and
correction library for HPC applications. LIBSDC provides
comprehensive SDC protection for program memory by
implementing on-demand page integrity verification.
Experimental benchmarks with Mantevo HPCCG show that once
tuned, LIBSDC is able to achieve SDC protection with 50%
overhead of resources, less than the 100% needed for double
modular redundancy.
