HPC Enhanced Large Urban Area Evacuation Simulations with Vision based Autonomously Navigating Multi Agents

Wijerathne, Lalith; Melgar, Leonel Aguilar; Hori, Muneo; Ichimura, Tsuyoshi; Tanaka, Seizo

doi:10.1016/j.procs.2013.05.319

Cited by 41 publications

(14 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tsunami evacuation simulations can quantitatively estimate the time required to complete evacuation or potential traffic jams in a target area given various scenarios. Many studies of tsunami evacuation simulation have been conducted [Imamura et al, 2001;Wijerathne et al, 2013]. However, the characteristics of human behavior regarding route choice tendency and shelter preference, which can exert an important influence during the time before a tsunami hits, have been ignored because previous simulations of this kind have been developed for indoor scenarios [Helbing and Molnar, 1995;Yokoyama et al, 1995;Kiyono et al, 1998], in which evacuees' options are very limited.…”

Section: Introductionmentioning

confidence: 99%

Behavior from Tsunami Recorded in the Multimedia Sources at Kesennuma City in the 2011 Tohoku Tsunami and Its Simulation by Using the Evacuation Model with Pedestrian—Car Interaction

Makinoshima

Imamura

Abe

2016

Coastal Engineering Journal

View full text Add to dashboard Cite

The evacuation behavior observed in Kesennuma City, Tohoku, Japan during the Great East Japan Earthquake and Tsunami and a corresponding evacuation simulation are presented. We first organized the damage and evacuation behaviors observed in the target area using the results of previous studies and official surveys. In addition, we compiled all available multimedia sources recording evacuation behavior during the 2011 event to identify the precise temporal and spatial details of the evacuation behavior. Then, a tsunami evacuation simulation was developed based on all compiled evacuation data, considering the tendencies regarding the use of main roads for evacuation, residents' shelter preferences, and pedestrian-car interactions. The developed simulation was validated against the compiled evacuation behaviors by inputting the estimated initial conditions of the 2011 event. The traffic scenarios calculated in the simulation closely reproduced the actual traffic flow as observed from the evacuation data. The evacuee populations at several shelters in the simulation also quantitatively reproduced the trend of the real numbers of evacuees reported by Kesennuma City. The results of the simulation exhibited a better capability 1640023-1 F. Makinoshima, F. Imamura f3 Y. Abe to estimate the actual evacuation behavior during the 2011 event than that achieved in previous studies.

show abstract

Section: Introductionmentioning

confidence: 99%

Behavior from Tsunami Recorded in the Multimedia Sources at Kesennuma City in the 2011 Tohoku Tsunami and Its Simulation by Using the Evacuation Model with Pedestrian—Car Interaction

Makinoshima

Imamura

Abe

2016

Coastal Engineering Journal

View full text Add to dashboard Cite

show abstract

“…Later, FUJIOKA (FUJIOKA et al 2002;KATO et al 2009;NGUYEN et al 2012a). Gradually, the research methodology has moved toward using much more data with finer levels of detail through agent-based modeling and high-performance computing (WIJERATHNE et al 2013). In addition, the importance of human behavior in evacuations is increasingly being considered in models (SUZUKI and IMAMURA 2005;MAS et al 2012;FUJIOKA et al 2002).…”

Section: Agent-based Tsunami Evacuation Modelingmentioning

confidence: 99%

“…Here, we demonstrate several examples of case studies of ABM tsunami evacuation modeling applied to verify, analyze and evaluate actual or predicted tsunami scenarios for evacuations. A large body of literature on agent-based tsunami evacuation models is available for several areas (WIJERATHNE et al 2013;GOTO et al 2012;NGUYEN et al 2012b;ABUSTAN et al 2012;LÄ MMEL et al 2010;MEGURO and ODA 2005;KATADA et al 2004); however, for brevity and consistency, we will introduce case studies and mitigation-related results from one agentbased model.…”

Section: Case Studies Of the Practical Applications Of Tsunami Evacuamentioning

confidence: 99%

“…The future of tsunami evacuation research, as seen by the authors, concerns the comprehensive geophysics of tsunamis and the physical and psychological traits of the evacuees, all of which would be built into an integrated modeling technique. Efforts to integrate tsunami simulations and social simulations using agent-based modeling (MAS et al , 2013a and to use supercomputers (WIJERATHNE et al 2013) to bridge gaps between geoscience and social science connect risk assessments with risk management. With these tools, evacuation issues can be understood in a more comprehensive manner.…”

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in Agent-Based Tsunami Evacuation Simulations: Case Studies in Indonesia, Thailand, Japan and Peru

Mas

Koshimura

Imamura

et al. 2015

Pure Appl. Geophys.

View full text Add to dashboard Cite

Abstract-As confirmed by the extreme tsunami events over the last decade Indian Ocean, 2010 Chile and 2011 Japan tsunami events), mitigation measures and effective evacuation planning are needed to reduce disaster risks. Modeling tsunami evacuations is an alternative means to analyze evacuation plans and possible scenarios of evacuees' behaviors. In this paper, practical applications of an agent-based tsunami evacuation model are presented to demonstrate the contributions that agent-based modeling has added to tsunami evacuation simulations and tsunami mitigation efforts. A brief review of previous agent-based evacuation models in the literature is given to highlight recent progress in agent-based methods. Finally, challenges are noted for bridging gaps between geoscience and social science within the agent-based approach for modeling tsunami evacuations.

show abstract

“…In comparison, because our target area has a high population density of 18,000 people/km 2 and limited open spaces, mass evacuation simulation using the Multi Agent System would be challenging. Our evacuation simulation is parallelized using the Message Passing Interface (MPI), and techniques such as dynamic load balancing are used to maintain scalability [20], [21], [22]. We simulate the evacuation of 2,000,000 agents in this area, using 2,048 CPU cores of the Kcomputer.…”

Section: ) Earthquake Wave Propagationmentioning

confidence: 99%

Implicit nonlinear wave simulation with 1.08T DOF and 0.270T unstructured finite elements to enhance comprehensive earthquake simulation

Ichimura

Fujita

Quinay

et al. 2015

Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis

View full text Add to dashboard Cite

This paper presents a new heroic computing method for unstructured, low-order, finite-element, implicit nonlinear wave simulation: 1.97 PFLOPS (18.6% of peak) was attained on the full K computer when solving a 1.08T degrees-of-freedom (DOF) and 0.270T-element problem. This is 40.1 times more DOF and elements, a 2.68-fold improvement in peak performance, and 3.67 times faster in time-to-solution compared to the SC14 Gordon Bell finalist's state-ofthe-art simulation. The method scales up to the full K computer with 663,552 CPU cores with 96.6% sizeup efficiency, enabling solving of a 1.08T DOF problem in 29.7 s per time step. Using such heroic computing, we solved a practical problem involving an area 23.7 times larger than the state-of-the-art, and conducted a comprehensive earthquake simulation by combining earthquake wave propagation analysis and evacuation analysis. Application at such scale is a groundbreaking accomplishment and is expected to change the quality of earthquake disaster estimation and contribute to society. Categories: Time-to-solution, Scalability, Peak performance I. CONTRIBUTIONS OF SUPERCOMPUTERS TO REDUCING EARTHQUAKE DISASTERS A. Overview and importance of the problem An earthquake can affect many people. The 2011 Tohoku Earthquake in Japan killed 20,000 and more than 200,000 people are still in temporary housing. The loss of lives, damage to the economy, and catastrophic damage are fresh in our memory. This damage occurred in Japan, a country that leads the world in earthquake disaster mitigation, and there are concerns over similar disasters in earthquake-prone mega-cities such as Los Angeles, San Francisco, and Tokyo. Reliable earthquake disaster estimation plays an important role in mitigating such disasters. Physics-based comprehensive earthquake simulation is the only way to make reliable estimations of such infrequent and untestable events, and is

show abstract

HPC Enhanced Large Urban Area Evacuation Simulations with Vision based Autonomously Navigating Multi Agents

Cited by 41 publications

References 1 publication

Behavior from Tsunami Recorded in the Multimedia Sources at Kesennuma City in the 2011 Tohoku Tsunami and Its Simulation by Using the Evacuation Model with Pedestrian—Car Interaction

Behavior from Tsunami Recorded in the Multimedia Sources at Kesennuma City in the 2011 Tohoku Tsunami and Its Simulation by Using the Evacuation Model with Pedestrian—Car Interaction

Recent Advances in Agent-Based Tsunami Evacuation Simulations: Case Studies in Indonesia, Thailand, Japan and Peru

Implicit nonlinear wave simulation with 1.08T DOF and 0.270T unstructured finite elements to enhance comprehensive earthquake simulation

Contact Info

Product

Resources

About