Boosting Java Performance Using GPGPUs

  • James Clarkson
  • Christos Kotselidis
  • Gavin Brown
  • Mikel Luján
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10172)

Abstract

In this paper we describe Jacc, an experimental framework which allows developers to program GPGPUs directly from Java. The goal of Jacc, is to allow developers to benefit from using heterogeneous hardware whilst minimizing the amount of code refactoring required. Jacc utilizes two key abstractions: tasks which encapsulate all the information needed to execute code on a GPGPU; and task graphs which capture both inter-task control-flow and data dependencies. These abstractions enable the Jacc runtime system to automatically choreograph data movement and synchronization between the host and the GPGPU; eliminating the need to explicitly manage disparate memory spaces. We demonstrate the advantages of Jacc, both in terms of programmability and performance, by evaluating it against existing Java frameworks. Experimental results show an average performance speedup of 19x, using NVIDIA Tesla K20m GPU, and a 4x decrease in code complexity when compared with writing multi-threaded Java code across eight evaluated benchmarks.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • James Clarkson
    • 1
  • Christos Kotselidis
    • 1
  • Gavin Brown
    • 1
  • Mikel Luján
    • 1
  1. 1.School of Computer ScienceUniversity of ManchesterManchesterUK

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