Preconditioners

A few preconditioners for iterative solvers.

https://github.com/julialinearalgebra/preconditioners.jl

Science Score: 57.0%

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Keywords from Contributors

optim pdes finite-elements differential-equations sciml ode projections accuracy unconstrained-optimization unconstrained-optimisation
Last synced: 6 months ago · JSON representation ·

Repository

A few preconditioners for iterative solvers.

Basic Info
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  • Stars: 51
  • Watchers: 2
  • Forks: 10
  • Open Issues: 4
  • Releases: 14
Created almost 8 years ago · Last pushed over 2 years ago
Metadata Files
Readme License Citation

README.md

Preconditioners

Build Status Coverage

Examples

```julia

A = sprand(1000, 1000, 0.01) A = A + A' + 30I

Diagonal preconditioner

p = DiagonalPreconditioner(A)

Incomplete Cholesky preconditioner with cut-off level 2

p = CholeskyPreconditioner(A, 2)

Algebraic multigrid preconditioner (AMG)

Ruge-Stuben variant

p = AMGPreconditioner{RugeStuben}(A)

Smoothed aggregation

p = AMGPreconditioner{SmoothedAggregation}(A)

Solve the system of equations

b = A*ones(1000) x = cg(A, b, Pl=p)

A = sprand(1000, 1000, 0.01) A = A + A' + 30I

Updates the preconditioner with the new matrix A

UpdatePreconditioner!(p, A)

```

Advanced AMG preconditioners

More advanced AMG preconditioners are also possible by building the MultiLevel struct that AMGPreconditioner wraps yourself using the package AMG.jl.

Citing Preconditioners.jl

If you use Preconditioners for your own research, please consider citing the following publication: Mohamed Tarek. Preconditioners.jl: A Flexible and Extensible Framework for Preconditioning in Iterative Solvers. 2023. doi: 10.13140/RG.2.2.26655.02721. @article{MohamedTarekPreconditionersjl, doi = {10.13140/RG.2.2.26655.02721}, url = {https://rgdoi.net/10.13140/RG.2.2.26655.02721}, author = {Tarek, Mohamed}, language = {en}, title = {Preconditioners.jl: A Flexible and Extensible Framework for Preconditioning in Iterative Solvers}, year = {2023} }

Owner

  • Name: JuliaLinearAlgebra
  • Login: JuliaLinearAlgebra
  • Kind: organization

A collection of linear algebra packages for the Julia Programming Language.

Citation (CITATION.bib)

@article{MohamedTarekPreconditionersjl,
  doi = {10.13140/RG.2.2.26655.02721},
  url = {https://rgdoi.net/10.13140/RG.2.2.26655.02721},
  author = {Tarek,  Mohamed and ChatGPT},
  language = {en},
  title = {Preconditioners.jl: A Flexible and Extensible Framework for Preconditioning in Iterative Solvers},
  year = {2023}
}

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  • Total versions: 14
juliahub.com: Preconditioners

A few preconditioners for iterative solvers.

  • Versions: 14
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  • Downloads: 84 Total
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Dependent repos count: 7.7%
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