TY - GEN
T1 - Parallel fully adaptive tsunami simulations
AU - Bader, Michael
AU - Breuer, Alexander
AU - Schreiber, Martin
PY - 2013
Y1 - 2013
N2 - We present our framework for parallel simulations of hyperbolic partial differential equations on triangular grids. As a proofof- concept, we implemented the shallow water equations using a finite volume method together with the Riemann solvers of LeVeque and George [1] and multi-resolution geoinformation datasets. The results show a parallel fully adaptive simulation applied to the 2011 Tohoku tsunami fieldbenchmark. Efficient adaptivity is realized by grid-traversals which follow the Sierpiński space filling curve. A stack- and stream-based approach accounts for locality and cache efficiency by arranging the data exchange among cells. For tsunamis we used the normalized height mass exchange as adaptivity criterion in every time step. Therefore, if a certain refinement threshold is exceeded, the corresponding cells are refined by newest vertex bisection. Values falling below a coarsening threshold result in a merge of the respective triangles.
AB - We present our framework for parallel simulations of hyperbolic partial differential equations on triangular grids. As a proofof- concept, we implemented the shallow water equations using a finite volume method together with the Riemann solvers of LeVeque and George [1] and multi-resolution geoinformation datasets. The results show a parallel fully adaptive simulation applied to the 2011 Tohoku tsunami fieldbenchmark. Efficient adaptivity is realized by grid-traversals which follow the Sierpiński space filling curve. A stack- and stream-based approach accounts for locality and cache efficiency by arranging the data exchange among cells. For tsunamis we used the normalized height mass exchange as adaptivity criterion in every time step. Therefore, if a certain refinement threshold is exceeded, the corresponding cells are refined by newest vertex bisection. Values falling below a coarsening threshold result in a merge of the respective triangles.
UR - http://www.scopus.com/inward/record.url?scp=84872481297&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-35893-7_19
DO - 10.1007/978-3-642-35893-7_19
M3 - Conference contribution
AN - SCOPUS:84872481297
SN - 9783642358920
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 137
EP - 138
BT - Facing the Multicore-Challenge III - Aspects of New Paradigms and Technologies in Parallel Computing
PB - Springer Verlag
T2 - 3rd Conference on Facing the Multicore-Challenge
Y2 - 19 September 2012 through 21 September 2012
ER -