Self-optimization of large scale wildfire simulations

Jingmei Yang, Huoping Chen, Salim Hariri, Manish Parashar

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

The development of efficient parallel algorithms for large scale wildfire simulations is a challenging research problem because the factors that determine wildfire behavior are complex. These factors make static parallel algorithms inefficient, especially when large number of processors is used because we cannot predict accurately the propagation of the fire and its computational requirements at runtime. In this paper, we propose an Autonomic Runtime Manager (ARM) to dynamically exploit the physics properties of the fire simulation and use them as the basis of our self-optimization algorithm. At each step of the wildfire simulation, the ARM decomposes the computational domain into several natural regions (e.g., burning, unburned, burned) where each region has the same temporal and special characteristics. The number of burning, unburned and burned cells determines the current state of the fire simulation and can then be used to accurately predict the computational power required for each region. By regularly monitoring and analyzing the state of the simulation, and using that to drive the runtime optimization, we can achieve significant performance gains because we can efficiently balance the computational load on each processor. Our experimental results show that the performance of the fire simulation has been improved by 45% when compared with a static portioning algorithm.

Original languageEnglish (US)
Pages (from-to)615-622
Number of pages8
JournalLECTURE NOTES IN COMPUTER SCIENCE
Volume3514
Issue numberI
DOIs
StatePublished - 2005
Event5th International Conference on Computational Science - ICCS 2005 - Atlanta, GA, United States
Duration: May 22 2005May 25 2005

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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