v0.10.1

Krylov v0.10.1

Diff since v0.10.0

Merged pull requests:

• [documentation] Specify how to use krylov_workspace for each workspace (#1002) (@amontoison)
• [documentation] Tutorial on distributed Krylov solvers using MPI.jl (#1003) (@amontoison)
• [documentation] Update the routines for the support of MPI (#1004) (@amontoison)
• Add new methods for krylov_workspace and krylov_solve (#1005) (@amontoison)

v0.10.0

Krylov v0.10.0

Diff since v0.9.10

Breaking changes

• solve! is replaced by krylov_solve!
• Update the API for workspaces (the suffix Solver is now Workspace)
• Unify the API for the workspaces (memory and windows are always kwargs for the constructors)
• Ensure that S is a concrete type in the workspaces (KrylovWorkspace{T, FC, S})
• Update the API for workspace accessors (the functions are not exported anymore)
• Rename some workspace accessors (iteration_count, solution_count, Aprod_count and Atprod_count)

New features

• Add kdiv!, kscalcopy! and kdivcopy! for the support of custom workspaces
• Add a generic interface (krylov_workspace, krylov_solve and krylov_solve!)
• Add documentation on the generic API (see here)
• Add documentation on the workspace accessors (see here)
• Update the docstrings to add more cross-references
• Add a function Krylov.elapsed_time

Other changes

• Krylov.jl now requires Julia 1.10
• Update the reference of MinAres and CAr
• Return a nice error if we detect that the preconditioner is not SPD in CG

Merged pull requests:

• Implement Line Search with Negative Curvature Detection for MINRES Based on Liu et al. (2022) (#969) (@farhadrclass)
• Update the reference of MinAres (#971) (@amontoison)
• Update the reference of MinAres and CAr (#972) (@amontoison)
• Don't export Krylov.solve! (#973) (@amontoison)
• Require Julia 1.10 (#974) (@amontoison)
• Update the API for workspaces (#975) (@amontoison)
• S should be a concrete type in the workspaces (#977) (@amontoison)
• Update Breakage.yml for PRs from a fork (#978) (@amontoison)
• Add kdiv! -- kscalcopy! -- kdivcopy! (#980) (@amontoison)
• Add a generic interface for Krylov.jl (#983) (@amontoison)
• Rename the files krylov_solve.jl and test_solvers.jl (#989) (@amontoison)
• Use the suffix Workspace instead of Solver (#990) (@amontoison)
• Return a nice error if we detect the preconditioner is not SPD in CG (#991) (@amontoison)
• Add references to the generic interface in the docstrings (#992) (@amontoison)
• krylov_solvers -> krylov_workspaces (#993) (@amontoison)
• [documentation] Add more cross-references to the in-place methods (#994) (@amontoison)
• Remove aliases (#995) (@amontoison)
• Add a function krylov_elapsed_time (#996) (@amontoison)
• Add a new file krylov_show.jl (#997) (@amontoison)
• Update the API for workspace accessors (#998) (@amontoison)
• Polish the API for workspace accessors (#1000) (@amontoison)

Closed issues:

• Improve the documentation of functions Aprod and Atprod (#488)
• GMRES Fails Silently From Stagnation (#729)
• StaticArrays support (#766)
• Remove broadcast in Krylov methods (#930)
• Unexport Krylov.solve! with the next major release (#934)
• Add a function to get the timer directly from a KrylovWorkspace (#936)
• nshifts and S should be the last argument in the Krylov solvers (#946)
• Require Julia 1.10 for the next major release (#964)
• Bug Report: CR and CG Solvers Fail with Float16 Precision (#968)
• Update breakage.yml for PRs from a fork (#976)
• Add a generic constructor for KrylovSolver and BlockKrylovSolver (#979)
• Rename the files krylov_solve.jl and test_solvers.jl (#984)
• Rename the suffix of the workspaces *Solver -> *Workspace (#987)

v0.9.10

Krylov v0.9.10

Diff since v0.9.9

Merged pull requests:

• Use my new implementation of coytrito! in GPUArrays.jl (#950) (@amontoison)
• Use similar for dynamic allocations (#952) (@amontoison)
• [CI] Test Krylov.jl on Linux ARM (#953) (@amontoison)
• [documentation] Add an example with BlockArrays.jl (#954) (@amontoison)
• Add an option reorthogonalization in hermitian_lanczos (#957) (@amontoison)
• CR: Update iterate on first iteration for negative curvature with line search and when zero curvature is detected (#958) (@farhadrclass)
• Add more tests for the option warm-start (#961) (@amontoison)

Closed issues:

• Compatibility with BlockArrays (#605)
• [Benchmarks] Krylov.jl vs PETSc (#693)
• ComponentArrays support (#769)
• parallel gmres (#847)
• Add stationary methods (#904)
• scalar indexing error when using block_gmres on GPU (#913)
• How to solve Ax=b when A is a Sparse Array ? (#925)
• Add more advanced constructors for KrylovSolver (#933)
• Add a opnorm function (#942)
• [documentation] Add an example of preconditioned saddle point system with BlockArrays (#949)
• Use similar instead of S(undef, n) for dynamic allocations (#951)

v0.9.9

Krylov v0.9.9

Diff since v0.9.8

Merged pull requests:

• Add an implementation of BLOCK-MINRES (#884) (@amontoison)
• Matrix-free example example with a PDE (#911) (@amontoison)
• Update nvidia.jl (#916) (@amontoison)
• [documentation] Improve the docstring of SimpleStats (#917) (@amontoison)
• Improve the docstrings of Krylov.jl (#918) (@amontoison)
• [documentation] Add comments in krylov_solve.jl (#919) (@amontoison)
• [documentation] Add a link for the paper of BiCGstab(ℓ) (#920) (@amontoison)
• Update krylov_solve.jl (#921) (@amontoison)
• Fix a typo -- reflexion -> reflection (#922) (@amontoison)
• Use the infix operator to compute the timer (#923) (@amontoison)
• Update with JSOBestieTemplate for Krylov (#924) (@tmigot)
• Use rmul! instead of broadcast for kscal! (#926) (@amontoison)
• [documentation] Add a page about custom workspaces (#927) (@amontoison)
• Fix to_boundary for complex numbers (#928) (@amontoison)
• Remove broadcast in MINRES-QLP (#929) (@amontoison)
• Update trilqr.jl (#931) (@amontoison)
• Update with JSOBestieTemplate for Krylov (#938) (@tmigot)
• Upgrade TriCG, TriMR and GPMR (#943) (@amontoison)
• Upgrade the Krylov processes and detect breakdowns (#944) (@amontoison)
• Add a new constructor for all Krylov solvers (#947) (@amontoison)

Closed issues:

• Add a link for BICGSTAB(l) (#902)
• Support custom vector types (#905)
• Add comments in the source file krylov_solve.jl (#915)
• use of AbstractArray (#935)
• Shifted MINRES Allocations Issue (#937)
• Test CGLS with shifts on rectangular systems (#948)

v0.9.8

Krylov v0.9.8

Diff since v0.9.7

Merged pull requests:

• Remove old macros (#907) (@amontoison)
• Add a function knorm_elliptic (#909) (@amontoison)
• Improve the matrix-free example with FFT (#912) (@amontoison)
• Fix block_gmres on GPUs (#914) (@amontoison)

Closed issues:

• Remove the macros and directly use the functions starting with k... internally (#906)
• Add a function for sqrt(kdotr(n, v, z)) (#908)

v0.9.7

Krylov v0.9.7

Diff since v0.9.6

Merged pull requests:

• Add cgls-shift algorithm (#853) (@tmigot)
• Support preconditioners in BiLQ and QMR (#862) (@amontoison)
• Add tests with LinearOperators.jl (#863) (@amontoison)
• Don't use the macro @. (#864) (@amontoison)
• Fix copy_triangle for Julia 1.11 (#866) (@amontoison)
• Fix preconditioning in cg when optional radius argument is positive (#868) (@mpf)
• Fix download count badge (#869) (@pricklypointer)
• Use GHA to test on Apple Silicon (#871) (@amontoison)
• Update test_allocations.jl (#872) (@amontoison)
• Update Aqua.yml (#873) (@amontoison)
• Bump actions/download-artifact from 3 to 4.1.7 in /.github/workflows (#874) (@dependabot[bot])
• Validate CITATION.cff (#875) (@tmigot)
• [Buildkite] Update pipeline.yml (#877) (@amontoison)
• Test block-GMRES on GPUs (#878) (@amontoison)
• Update the documentation (#879) (@amontoison)
• [documentation] Add an example with RandomizedPreconditioners.jl (#880) (@amontoison)
• [documentation] Update preconditioners.md (#881) (@amontoison)
• [documentation] Add a matrix-free example with FFTW.jl (#883) (@amontoison)
• Add a reference for USYMQR (#885) (@amontoison)
• Use metaprogramming to generate out-of-place methods (#887) (@amontoison)
• [documentation] Replace IncompleteLU.jl by KrylovPreconditioners.jl (#889) (@amontoison)
• Improve type inference of extract_parameters (#890) (@amontoison)
• Define cg_lanczos_shift with metaprogramming (#892) (@amontoison)
• Use metaprogramming to generate more out-of-place methods (#893) (@amontoison)
• Generate all out-of-place methods in krylov_solve.jl (#894) (@amontoison)
• [documentation] Improve the matrix-free example with FFT (#895) (@amontoison)
• Add a macro kfill! (#897) (@amontoison)
• Swap the arguments in the macro kcopy! (#898) (@amontoison)
• Use the macro kcopy! instead of broadcast (#899) (@amontoison)
• Improve the docstrings of block-Krylov processes (#900) (@amontoison)
• Specify that memory is an optional argument for some KrylovSolvers (#901) (@amontoison)
• [documentation] Improve the structure of matrix_free.md (#903) (@amontoison)

Closed issues:

• Use 5-argument mul! (#353)
• Add documentation about memory parameter (#521)
• convert function for solvers (#585)
• Use Real as FC instead of AbstractFloat ? (#646)
• ReshapedArrays support (#770)
• Download badge is broken (#851)
• block_gmres fails with LinearOperator (#854)
• Add tests with LinearOperators.jl (#861)
• Possible support for Dual types for Automatic Differentiation (#870)
• Use metaprogramming to generate all out-of-place methods (#888)

v0.9.6

Krylov v0.9.6

Diff since v0.9.5

Merged pull requests:

• Add comments about using block-GMRES on GPUs (#844) (@amontoison)
• [documentation] KrylovOperator -- optimized sparse products on NVIDIA and AMD GPUs (#848) (@amontoison)
• Add copyto! for KrylovStats (#849) (@amontoison)
• Update CITATION.cff (#852) (@tmigot)
• Update ci.yml (#857) (@amontoison)
• Support ComponentArrays.jl in Krylov.jl (#859) (@amontoison)

Closed issues:

• [documentation] Add an optimized linear operator for sparse matrix-vector product on Nvidia GPUs (#783)
• Implement copyto! for KrylovStats (#846)

v0.9.5

Krylov v0.9.5

Diff since v0.9.4

Merged pull requests:

• [documentation] AMDGPU.jl supports rocSPARSE (#781) (@amontoison)
• [MINARES] Fix warm-start (#794) (@amontoison)
• Fix a typo in test/gpu/amd.jl (#796) (@amontoison)
• [documentation] Update the section about AMD GPUs (#798) (@amontoison)
• Improve the function hermitian_lanczos (#799) (@amontoison)
• Block-Krylov processes (#800) (@amontoison)
• Add an option reorthogonalization for two processes (#803) (@amontoison)
• Update the pseudocode of the Krylov processes (#805) (@amontoison)
• [documentation] Explain the transpose-free variant of the non-Hermitian Lanczos process (#807) (@amontoison)
• Update paper.md (#809) (@danielskatz)
• Fix the issue with the adjoint in JOSS (#810) (@amontoison)
• [documentation] Update Documenter.jl (#811) (@amontoison)
• Update Krylov processes to return more arguments (#813) (@amontoison)
• [JOSS] Update CITATION.cff and DOI badge (#815) (@amontoison)
• [JOSS] Add a BibTeX entry (#817) (@amontoison)
• Update CITATION.cff (#818) (@amontoison)
• Add a DOI link for CAR and MINARES (#820) (@amontoison)
• Test view of AMD GPUs (#823) (@amontoison)
• Update pipeline.yml (#829) (@amontoison)
• [documentation] Add a reference for CRAIG (#834) (@amontoison)
• Add compat entries for Test and Random (#835) (@amontoison)
• Add an implementation of BLOCK-GMRES (#840) (@amontoison)
• Release 0.9.5 (#841) (@amontoison)

Closed issues:

• [documentation] Update GPU support (#627)
• Solve matrix-matrix problem (#759)
• Add an option reorthogonalization for the processes (#801)
• Question for GPU computation: lots of time on vector products (#822)
• Automatically promote atol and rtol to eltype(b) (#828)
• Move Block-GMRES in Krylov.jl (#831)
• Add a reference for CRAIG (#833)

v0.9.4

Krylov v0.9.4

Diff since v0.9.3

Closed issues:

• GPU Example is broken (#754)
• GMRES Convergence Without Meeting atol/rtol (#774)
• Add an example and a test for the CuSparseMatrixCOO format (#775)

Merged pull requests:

• [documentation] Update tips.md (#777) (@amontoison)
• [documentation] Improve preconditioners.md (#778) (@amontoison)
• [documentation] Add an example with CuSparseMatrixCOO (#779) (@amontoison)
• Update paper.md (#785) (@amontoison)
• An implementation of CAR (#786) (@amontoison)
• An implementation of MINARES (#787) (@amontoison)
• Remove .zenodo.json (#788) (@amontoison)
• Add an example for MINARES (#789) (@amontoison)
• Release 0.9.4 (#790) (@amontoison)
• CITATION.bib -> CITATION.cff (#791) (@amontoison)

v0.9.3

Krylov v0.9.3

Diff since v0.9.2

Closed issues:

• GPU scalar indexing when using LsmrSolver (ERROR: LoadError: Scalar indexing is disallowed.) (#764)

Merged pull requests:

• [JOSS] Review comments of LeilaGhaffari (#765) (@amontoison)
• StaticArrays support (#768) (@amontoison)
• Release 0.9.3 (#772) (@amontoison)