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Parallel discrete-event simulation schemes with heterogeneous processing elements.

Yup Kim1, Ikhyun Kwon1, Huiseung Chae1

  • 1Department of Physics and Research Institute for Basic Sciences, Kyung Hee University, Seoul 130-701, Korea.

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Summary
This summary is machine-generated.

Investigating nonidentical processing elements (PEs) in parallel discrete-event simulation (PDES) showed that the Kardar-Parisi-Zhang (KPZ) scheme is robust, while the Edwards-Wilkinson (EW) scheme

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Area of Science:

  • Computational Physics
  • Complex Systems Simulation
  • Parallel Computing

Background:

  • Nonidentical processing elements (PEs) can impact the performance of parallel discrete-event simulation (PDES) schemes.
  • Understanding these effects is crucial for optimizing large-scale simulations.
  • Stochastic growth models provide a framework for studying PDES behavior.

Purpose of the Study:

  • To investigate the impact of nonidentical PEs on two PDES schemes: Kardar-Parisi-Zhang (KPZ) and Edwards-Wilkinson (EW).
  • To analyze how different distributions of PE capacities affect scheme synchronizability and scalability.
  • To determine conditions under which the EW scheme can achieve synchronizability.

Main Methods:

  • Simulations of two stochastic growth models: restricted solid-on-solid (RSOS) for KPZ and Family model for EW.
  • Consideration of two types of nonidentical PE distributions: similar capacities and widely varying capacities.
  • Analysis of synchronizability and scalability of both schemes under different PE configurations.

Main Results:

  • The KPZ scheme demonstrated synchronizability and scalability irrespective of PE capacity distribution.
  • The EW scheme failed to synchronize with random PEs of similar capacities.
  • Regularizing PE arrangement allowed the EW scheme to achieve synchronizability with similar capacities.
  • The EW scheme never synchronized with widely varying PE capacities.

Conclusions:

  • The KPZ scheme offers robust performance in parallel discrete-event simulations with nonidentical processing elements.
  • The EW scheme's synchronizability is highly sensitive to PE configuration and capacity distribution.
  • Careful PE arrangement is necessary for the EW scheme to achieve synchronizability, but it remains ineffective with highly heterogeneous PEs.