A Multilevel Parallel Solver for Block Tridiagonal and Banded Linear Systems
Abstract
This paper describes an efficient algorithm for the parallel solution of systems of linear equations with a block tridiagonal coefficient matrix. The algorithm comprises a multilevel LU-factorization based on block cyclic reduction and a corresponding solution algorithm. The paper includes a general presentation of the parallel multilevel LU-factorization and solution algorithms, but the main emphasis is on implementation principles for a message passing computer with hypercube topology. Problem partitioning, processor allocation and communication requirements are discussed for the general block tridiagonal algorithm.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 25, 1989
- Accession Number
- ADA213151
Entities
People
- Ibrahim N. Hajj
- Stig Skelboe
Organizations
- University of Illinois Urbana–Champaign