The open archive for STFC research publications

Full Record Details

Persistent URL http://purl.org/net/epubs/work/64888
Record Status Checked
Record Id 64888
Title The augmented block Cimmino distributed method
Abstract We introduce and study a novel way of accelerating the convergence of the block Cimmino method by augmenting the matrix so that the subspaces corresponding to the partitions are orthogonal. This results in a requirement to solve a relatively smaller symmetric positive definite system. We consider ways to reduce the size of this system using a controlled departure from orthogonality. We illustrate the performance of our method on some realistic test problems.
Organisation STFC , SCI-COMP , SCI-COMP-CM
Keywords multifrontal method , sparse matrices , hybrid solver , block Cimmino , orthogonalization of subspaces
Funding Information
Related Research Object(s):
Licence Information:
Language English (EN)
Type Details URI(s) Local file(s) Year
Report RAL Preprints RAL-P-2013-001. 2013. RAL-P-2013-001.pdf 2013