4/1/2019 · In particular, coming back to our sample H-LU factorization in the previous section, a natural approach to exploit nested task-parallelism is to annotate O1, O2, O3, O4, O5 each as a task using the OpenMP/OmpSs task construct , . Inside O1, we can then annotate O1.1, O1.2,…,O1.5 each as a task and a similar argument applies to the decomposition of O5 into.
6/3/2019 · Abstract: We address the parallelization of the LU factorization of hierarchical matrices ($mathcal{H}$-matrices) arising from boundary element methods. Our approach exploits task-parallelism via the OmpSs programming model and runtime, which discovers the data-flow parallelism intrinsic to the operation at execution time, via the analysis of data.
6/3/2019 · Abstract: We address the parallelization of the LU factorization of hierarchical matrices ($mathcal{H}$-matrices) arising from boundary element methods. Our approach exploits task-parallelism via the OmpSs programming model and runtime, which discovers the data-flow parallelism intrinsic to the operation at execution time, via the analysis of data.
The researchers from Universidad Jaume I (UJI) were supported by projects CICYT TIN2014-53495-R and TIN2017-82972-R of MINECO and FEDER project UJI-B2017-46 of UJI and the FPU program of MECD.
Resumen: [EN] We address the parallelization of the LU factorization of hierarchical matrices (H-matrices) arising from boundary element methods. Our approach exploits task-parallelism via the OmpSs programming model and runtime, which discovers the data-flow parallelism intrinsic to the operation at execution time, via the analysis of data dependencies based on the memory.
Exploiting nested task-parallelism in the H-LU factorization Rocío Carratalá-Sáez, Sven Christophersen, José I. Aliaga, Vicenç Beltran, … Enrique S. Quintana-Ortí, guage [8] as a representative of nested task-parallel lan-guages, and demonstrate how it can be extended with iso-lation using the Otello programming and execution model. The basic ideas in Otello of adding isolation to nested task parallelism can be applied to other nested task-parallel pro-gramming models including Cilk [5] and OpenMP 3.0 [27].
8/24/2016 · Nested Dissection. Exploiting the relationship between sparse matrices and adjacency graphs, nested dissection can be recursively applied to permute a sparse matrix, yielding a collection of diagonal blocks that are linked to certain subgraphs and separators [].Moreover, the hierarchy of subgraphs and separators fixes the order in which the diagonal.
Exploiting nested task-parallelism in the ?-LU factorization We address the parallelization of the LU factorization of hierarchical m… 06/03/2019 ? by Rocío Carratalá-Sáez, et al. ? 0 ? share, B. LU factorization of general and H-Matrices The LU factorization is an extremely useful decomposition for the solution of linear systems that, given a non singular matrix A 2R n (for the coef?cients of the linear system), returns a unit lower triangular factor L 2R n, and an upper triangular factor U 2R n, such that A = LU.
