Before this patch `BCRSMatrix::addindex()` was used on individual
column indices. This is slow because each insertion does a binary
search although the inserted indices are already sorted. Bulk-inserting
whole rows with `setIndices()` improves on this significantly but still
does a non-necessary sort. The latter is avoided by the new
`BCRSMatrix::setIndicesNoSort()` method.

This is similar to `setIndices()` but does not sort indices
after insertion which allows to avoid an additional sort
on an already sorted range. The latter e.g. is the case when
using sorted containers as it is done in `MatrixIndexSet`.

Fix Doxygen warnings

See merge request !552

Add line breaks.
Remove indentation as Doxygen treats it as <pre>.

Add flag useFixedOrder to the coarsen method of AMGs ParallelIndicesCoarsener.

See merge request !553

This tests makes sure the matrices in the hierarchy get created in a deterministic way when the flag 'useFixedOrder' of the coarseningCriterion is set to true.

Lisa Julia Nebel authored 1 year ago and Lisa Julia Nebel committed 1 year ago

If set to true, the indices for the coarser grid will be created in a fixed order, making parallel runs reproducible but the runtime is possibly not ideal.
If set to false (which is the default), the order depends on the order of messages recieved from the processes responsible for the respective parts of the finer grid.
Then the indices on the coarser grid may differ from run to run.

Remove argument from cmake command finalize_dune_project

See merge request !551

Use  feraiseexcept on windows and mac for floating point exceptions

See merge request !549

Add DILU preconditioner

See merge request !547

fix an issue caused by generated files being added to source tree - move to a temporary location

Closes #111

See merge request !529

[cmake] Require CMake 3.16 or newer

See merge request !548

Initialize all members of SequentialInformation

See merge request !545

Resolve "writeSVGMatrix parameters are inconsistent with other IO writers"

Closes #104

See merge request !513

Resolve "Building istl-solver-playground causes compile time error"

Closes #112

See merge request !541

[foreach][cleanup] Only use return values in debug mode (silences warning)

See merge request !544

Add printSparseMatrix method for ScaledIdentityMatrix

See merge request !531

Fix error "delete  called on pointer returned from a mismatched allocation function"

See merge request !542

Move the find_package(SuiteSparse) from istl to common

See merge request !538

[ci] Drop no longer supported CI configurations

See merge request !540

These configurations are outdated for two reasons:

* Clang versions before 10 are no longer supported.
* Ubuntu 18.04 has reached its EOL in 2023-06.

UMFPACK: Use generic flatMatrixForEach routines for arbitrary blocked matrices

See merge request !530

CI failed before since the test matrix was singular.
This commit adds some regularization to pass tests on all runners.