Parallelization strategy for wavefield simulation with an elastic iterative solver. / Belonosov, Mikhail; Cheverda, Vladimir; Kostin, Victor et al.
Supercomputing - 4th Russian Supercomputing Days, RuSCDays 2018, Revised Selected Papers. ed. / Sergey Sobolev; Vladimir Voevodin. Springer-Verlag GmbH and Co. KG, 2019. p. 331-342 (Communications in Computer and Information Science; Vol. 965).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
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TY - GEN
T1 - Parallelization strategy for wavefield simulation with an elastic iterative solver
AU - Belonosov, Mikhail
AU - Cheverda, Vladimir
AU - Kostin, Victor
AU - Neklyudov, Dmitry
PY - 2019/9
Y1 - 2019/9
N2 - We present a parallelization strategy for our novel iterative method to simulate elastic waves in 3D land inhomogeneous isotropic media via MPI and OpenMP. The unique features of the solver are the preconditioner developed to assure fast convergence of the Krylov-type iteration method at low time frequencies and the way to calculate how the forward modeling operator acts on a vector. We successfully benchmark the accuracy of our solver against the exact solution and compare it to another iterative solver. The quality of the parallelization is justified by weak and strong scaling analysis. Our modification allows simulation in big models including a modified 2.5D Marmousi model comprising 90 million cells.
AB - We present a parallelization strategy for our novel iterative method to simulate elastic waves in 3D land inhomogeneous isotropic media via MPI and OpenMP. The unique features of the solver are the preconditioner developed to assure fast convergence of the Krylov-type iteration method at low time frequencies and the way to calculate how the forward modeling operator acts on a vector. We successfully benchmark the accuracy of our solver against the exact solution and compare it to another iterative solver. The quality of the parallelization is justified by weak and strong scaling analysis. Our modification allows simulation in big models including a modified 2.5D Marmousi model comprising 90 million cells.
KW - Elastic equation
KW - Krylov iterations
KW - MPI
KW - OpenMP
KW - Preconditioner
UR - http://www.scopus.com/inward/record.url?scp=85059913732&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-05807-4_28
DO - 10.1007/978-3-030-05807-4_28
M3 - Conference contribution
AN - SCOPUS:85059913732
SN - 9783030058067
T3 - Communications in Computer and Information Science
SP - 331
EP - 342
BT - Supercomputing - 4th Russian Supercomputing Days, RuSCDays 2018, Revised Selected Papers
A2 - Sobolev, Sergey
A2 - Voevodin, Vladimir
PB - Springer-Verlag GmbH and Co. KG
T2 - 4th Russian Supercomputing Days Conference, RuSCDays 2018
Y2 - 24 September 2018 through 25 September 2018
ER -
ID: 25773604