Measuring the Realtime Capability of Parallel-Discrete-Event-Simulations

Date

2021-03-10

Advisors

Journal Title

Journal ISSN

ISSN

2079-9292

Volume Title

Publisher

MDPI

Type

Article

Peer reviewed

Yes

Abstract

Speeding up Discrete Event Simulations (DESs) is a broad research field. Promising Parallel Discrete Event Simulation (PDES) approaches with optimistic and conservative synchronisation schemes have emerged throughout the years. However, in the area of real-time simulation, PDESs are rarely considered. This is caused by the complex problem of fitting parallel executed DES models to a real-time clock. Hence, this paper gives an extensive review of existing conservative and optimistic synchronisation schemes for PDESs. It introduces a metric to compare their real-time capabilities to determine whether they can be used for soft or firm real-time simulation. Examples are given on how to apply this metric to evaluate PDESs using synthetic and real-world examples. The results of the investigation reveal that no final answer can be given if PDESs can be used for soft or firm real-time simulation as they are. However, boundary conditions were defined, which allow a use-case specific evaluation of the real-time capabilities of a certain parallel executed DES. Using this in-depth knowledge and can lead to predictability of the real-time behaviour of a simulation run.

Description

open access article

Keywords

real-time simulation, Vehicular Ad Hoc Networks, Discrete Event Simulation, network simulation

Citation

Obermaier, C., Riebl, R., Al-Bayatti, A.H., Khan, S., Facchi, C. (2021) Measuring the Realtime Capability of Parallel-Discrete-Event-Simulations. Electronics, 10, 636.

Rights

Research Institute

Cyber Technology Institute (CTI)