Fault Tolerant MPI for the HARNESS Meta-computing System

  • Authors:
  • Graham E. Fagg;Antonin Bukovsky;Jack Dongarra

  • Affiliations:
  • -;-;-

  • Venue:
  • ICCS '01 Proceedings of the International Conference on Computational Sciences-Part I
  • Year:
  • 2001

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Abstract

Initial versions of MPI were designed to work efficiently on multiprocessors which had very little job control and thus static process models. Subsequently forcing them to support a dynamic process model suitable for use on clusters or distributed systems would have reduced their performance. As current HPC collaborative applications increase in size and distribution the potential levels of node and network failures increase the need arises for new fault tolerant systems to be developed. Here we present a new implementation of MPI called FT-MPI that allows the semantics and associated modes of failures to be explicitly controlled by an application via a modified MPI API. Given is an overview of the FT-MPI semantics, design, example applications and some performance issues such as efficient group communications and complex data handling.