# ILUBCG2: A preconditioned biconjugate gradient routine for the solution of linear asymmetric matrix equations arising from 9-point discretizations

## Description

Title of program: ILUBCG2 Catalogue Id: AALX_v1_0 Nature of problem Certain elliptic and parabolic partial differential equations that arise in plasma physics and other applications are solved in two dimensions. The implicit solution techniques used for these equations give rise to a system of linear equations whose matrix operator is sparse - often 9-banded - and generally asymmetric. We provide a fast algorithm for their solution. ADAPTATION SUMMARY: Vol:Year:Page 55:1989:359 "0001ILUBCG2-11" "ILUBCG2-11: solution of 11-banded nonsymmetric linear equati ... Note: adaptation instructions are contained in source code Versions of this program held in the CPC repository in Mendeley Data AALX_v1_0; ILUBCG2; 10.1016/0010-4655(87)90213-X This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)