Transparent, Incremental Checkpointing at Kernel Level: a Foundation for Fault Tolerance for Parallel Computers

  • Authors:
  • Roberto Gioiosa;Jose Carlos Sancho;Song Jiang;Fabrizio Petrini;Kei Davis

  • Affiliations:
  • Universitá degli Studi di Roma, Italy;Los Alamos National Laboratory;Los Alamos National Laboratory;Pacific Northwest National Laboratory, WA;Los Alamos National Library, NM

  • Venue:
  • SC '05 Proceedings of the 2005 ACM/IEEE conference on Supercomputing
  • Year:
  • 2005

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Abstract

We describe the software architecture, technical features, and performance of TICK (Transparent Incremental Checkpointer at Kernel level), a system-level checkpointer implemented as a kernel thread, specifi- cally designed to provide fault tolerance in Linux clusters. This implementation, based on the 2.6.11 Linux kernel, provides the essential functionality for transparent, highly responsive, and efficient fault tolerance based on full or incremental checkpointing at system level. TICK is completely user-transparent and does not require any changes to user code or system libraries; it is highly responsive: an interrupt, such as a timer interrupt, can trigger a checkpoint in as little as 2.5µs; and it supports incremental and full checkpoints with minimal overhead-less than 6% with full checkpointing to disk performed as frequently as once per minute.