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Title: NSPCG (Nonsymmetric Preconditioned Conjugate Gradient) user's guide: Version 1. 0: A package for solving large sparse linear systems by various iterative methods

Technical Report ·
DOI:https://doi.org/10.2172/7035748· OSTI ID:7035748

NSPCG (or Nonsymmetric Preconditioned Conjugate Gradient) is a computer package to solve the linear system Au = b by various iterative methods. The coefficient matrix A is assumed to be large and sparse with real coefficients. A wide selection of preconditioners and accelerators is available for both symmetric and nonsymmetric coefficient matrices. Several sparse matrix data structures are available to represent matrices whose structures range from highly structures to completely unstructured. 36 refs., 8 tabs.

Research Organization:
Texas Univ., Austin, TX (USA). Center for Numerical Analysis
Sponsoring Organization:
DOE/ER; National Science Foundation (NSF)
DOE Contract Number:
FG05-87ER25048
OSTI ID:
7035748
Report Number(s):
DOE/ER/25048-T2; CNA-216; ON: DE90013969; CNN: CCR-8518722
Country of Publication:
United States
Language:
English