Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › научная › Рецензирование
Experimental Study of Macrogrid Domain Decomposition Methods with Approximate Block Bisection. / Gurin, Alexey; Il’in, Valery; Kardash, Ruslan.
Lecture Notes in Computer Science. Том 16196 Springer, 2026. стр. 274-287 20 (Lecture Notes in Computer Science; Том 16196 LNCS).Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › научная › Рецензирование
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TY - GEN
T1 - Experimental Study of Macrogrid Domain Decomposition Methods with Approximate Block Bisection
AU - Gurin, Alexey
AU - Il’in, Valery
AU - Kardash, Ruslan
N1 - Conference code: 11
PY - 2026/1/2
Y1 - 2026/1/2
N2 - This paper develops and experimentally investigates macrogrid domain decomposition methods for solving large systems of linear algebraic equations (SLAEs) with sparse symmetric matrices obtained from grid approximations of multidimensional boundary value problems. The proposed algorithms are based on constructing two-layer macro-grids and special ordering of nodes according to their belonging to different topological primitives of the macro-grid: macro-nodes, macro-edges, macro-faces, and subdomains. With consistent numbering of vector components, the SLAE matrices in the three-dimensional case take a block-tridiagonal form of fourth order. For its solution, an incomplete factorization algorithm is used, based on block bisection of the original matrix and application of parallel direct or preconditioned iterative algorithms in subdomains. The justification of the proposed methods is given for symmetric positive definite (s.p.d.) matrices.
AB - This paper develops and experimentally investigates macrogrid domain decomposition methods for solving large systems of linear algebraic equations (SLAEs) with sparse symmetric matrices obtained from grid approximations of multidimensional boundary value problems. The proposed algorithms are based on constructing two-layer macro-grids and special ordering of nodes according to their belonging to different topological primitives of the macro-grid: macro-nodes, macro-edges, macro-faces, and subdomains. With consistent numbering of vector components, the SLAE matrices in the three-dimensional case take a block-tridiagonal form of fourth order. For its solution, an incomplete factorization algorithm is used, based on block bisection of the original matrix and application of parallel direct or preconditioned iterative algorithms in subdomains. The justification of the proposed methods is given for symmetric positive definite (s.p.d.) matrices.
UR - https://www.scopus.com/pages/publications/105028303286
UR - https://www.mendeley.com/catalogue/b6f51aac-22a0-323c-9d14-f9291655a9c0/
U2 - 10.1007/978-3-032-13127-0_20
DO - 10.1007/978-3-032-13127-0_20
M3 - Conference contribution
SN - 978-3-032-13126-3
VL - 16196
T3 - Lecture Notes in Computer Science
SP - 274
EP - 287
BT - Lecture Notes in Computer Science
PB - Springer
T2 - 11th Russian Supercomputing Days
Y2 - 29 September 2025 through 30 September 2025
ER -
ID: 74290037