Work-optimal simulation of PRAM models on meshes

  • Authors:
  • Ville Leppänen;Martti Penttonen

  • Affiliations:
  • Department of Computer Science, University of Turku, Finland;Department of Computer Science, University of Joensuu, Finland

  • Venue:
  • Nordic Journal of Computing
  • Year:
  • 1995

Quantified Score

Hi-index 0.00

Visualization

Abstract

Memory access is the bottleneck in the simulation of shared memory on a distributed memory model. We show that EREW, CREW, and CRCW PRAM models can be simulated work-optimally on a mesh-connected routing machinery that is coated with processors. The simulation uses a combination of well-known techniques such as randomized hashing, greedy routing, and parallel slackness.The advantage of our mesh based simulation is the simple and scalable structure of the mesh combined with good performance. A theoretical analysis and practical experiments show that our simulation is economical and efficient in comparison with other proposed architectures, such as butterflies and hypercubes, for all feasible numbers of processors.