Related Numerical Methods

Conjugate gradient codes

Name	Author	Type	Language	Description
zbcg2	M.A.Botchev	Conjugate gradient	Fortran	BiCGstab, Preprint 976, Dept. of Mathematics, Utrecht University, URL http://www.math.uu.nl/publications/). It includes two enhancements to BiCGstab proposed by G.Sleijpen and H.van der Vorst in 1) G.Sleijpen and H.van der Vorst "Maintaining convergence properties of BiCGstab methods in finite precision arithmetic", Numerical Algorithms, 10, 1995, pp.203-223, 2) G.Sleijpen and H.van der Vorst "Reliable updated residuals in hybrid BiCG methods", Computing, 56, 1996, pp.141-163
IDR	Conjugate gradient	Peter Sonneveld and Martin B. van Gijzen	Matlab	IDR(s) is a new, highly efficient Krylov subspace method for solving large nonsymmetric systems of linear equations. On this page you can find reports and papers that describe IDR(s), MATLAB code for IDR(s), and examples of how to use the code. http://ta.twi.tudelft.nl/nw/users/gijzen/IDR.html
Conjugate gradient written by Flatau et al.	Flatau, Evans, Schneider	Conjugate gradient	Fortran	Complex and real conjugate gradient package
Conjugate gradient CCGPAK 2012	Flatau	Documentation	Fortran	This manual describes the library of conjugate gradients codes CCGPAK, which solves system of complex linear system of equations. The library is written in FORTRAN90 and is highly portable. The codes are general and provide mechanism for matrix times vector multiplication which is separated from the conjugate gradient iterations itself. It is simple to switch between single and double precisions. All codes follow the same naming conventions Old google code conjugate gradient site

PIM95.zip PIM95.zip Fortran95 version of Parallel Iterative Methods Software
ccgpak2_0.zip ccgpak2.0
sogabeCOCR_all.zip 2009 version of COCR code written by Tomohiro Sogabe and Shao-Liang Zhang F77
pim23_all.zip PIM2.3 Fortran 77
chaumet2012.zip Patric C. Chaumet Fortran77 Implementations of gpbicg qmrpim tfqmr zcg
sarkar_1988.pdf Sarkar 1988 documentation
ccg1d.f ccgpack 1d