TY  - JOUR
AU  - Würzburger, My Linh
AU  - Arnold, Lukas
TI  - Dynamic domain expansion in smoke spread simulations with ARTSS: Speedup and overhead
JO  - Fire safety journal
VL  - 120
SN  - 0379-7112
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2020-04877
SP  - 103168
PY  - 2021
AB  - This paper describes the impact and consequences of a dynamic domain expansion in a smoke simulation performed in the software ARTSS. This software is developed with the aim to conduct real-time or even prognosis computations by using GPUs as the main computational architecture. Further runtime acceleration is proposed by means of a dynamic expansion of the computational domain. This approach is based on the reduction of the computational domain, which is dynamically adapted to calculate only the domain of interest, e.g. regions containing smoke. Here, the domain starts as a localised region and is expanded based on prescribed criteria. This contribution outlines the initial implementation. However, to understand the impact of an expansion, the overhead caused by the expansion process, the influence on the numerical result and on the runtime, as well as the used expansion parameters, are investigated. In general, an increased acceleration can be eventually observed at the costs of accuracy due to the reduced domain. The overhead and accuracy can be controlled by the method's parameters. The loss of accuracy depends strongly on which expansion methods and setting are used. With more complex expansion methods, the loss of accuracy can be reduced.
T2  - Symposium of the International Association for Fire Safety Science
CY  - 27 Apr 2020 - 1 May 2020, Waterloo (Canda)
Y2  - 27 Apr 2020 - 1 May 2020
M2  - Waterloo, Canda
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000639876600007
DO  - DOI:10.1016/j.firesaf.2020.103168
UR  - https://juser.fz-juelich.de/record/888398
ER  -