Porting decision tree algorithms to multicore using fastflow

  • Authors:
  • Marco Aldinucci;Salvatore Ruggieri;Massimo Torquati

  • Affiliations:
  • Computer Science Department, University of Torino, Italy;Computer Science Department, University of Pisa, Italy;Computer Science Department, University of Pisa, Italy

  • Venue:
  • ECML PKDD'10 Proceedings of the 2010 European conference on Machine learning and knowledge discovery in databases: Part I
  • Year:
  • 2010

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Abstract

The whole computer hardware industry embraced multicores. For these machines, the extreme optimisation of sequential algorithms is no longer sufficient to squeeze the real machine power, which can be only exploited via thread-level parallelism. Decision tree algorithms exhibit natural concurrency that makes them suitable to be parallelised. This paper presents an approach for easy-yet-efficient porting of an implementation of the C4.5 algorithm on multicores. The parallel porting requires minimal changes to the original sequential code, and it is able to exploit up to 7× speedup on an Intel dual-quad core machine.