Distributed Macroscopic Traffic Simulation with Open Traffic Models: Preprint

Conference · 13 October 2020

DOI:https://doi.org/10.1109/ITSC45102.2020.9294316· OSTI ID:1686123

Gomes, Gabriel; Ugirumurera, Juliette; Li, Xiaoye S.

This paper presents OTM-MPI, an extension of the Open Traffic Models platform (OTM) for running macroscopic traffic simulations in high-performance computing environments. OTM-MPI represents the first open-source, distributed-memory, macroscopic simulation model developed for modern high performance parallel machines and large networks. Macroscopic simulations are appropriate for studying regional traffic scenarios when aggregate trends are of interest, rather than individual vehicle traces. They are also appropriate for studying the routing behavior of vehicles, such as app-informed vehicles. The network partitioning was performed with METIS. Inter-process communication was done with MPI (message-passing interface). Results are provided for two networks: one realistic network which was obtained from Open Street Maps for Chattanooga, TN, and another larger synthetic grid network. The software recorded a speed-up ratio of 198 using 256 cores for Chattanooga, and 475 with 1,024 cores for the synthetic network.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1686123
• Report Number(s): NREL/CP-2C00-76996; MainId:24959; UUID:ad5facc0-1e1c-4547-8617-007e6401197c; MainAdminID:13366
• Conference Information: Presented at the 23rd IEEE International Conference on Intelligent Transportation Systems (IEEE ITSC), 20-23 September 2020; 79173
• Country of Publication: United States
• Language: English

Related Subjects

macro-scopic traffic simulation
MATHEMATICS AND COMPUTING
parallel computing
parallel simulation
traffic simulation