Simplifies the memory management.

[cmake] Apply the CMAKE_GUARD parameter of dune_add_Test to dune-istl

Except for those parts that do still rely on the enable trick to
test a certain feature set.

See merge request !42

Throw error when LDL factorisation fails



See merge request !47

Add .gitlab-ci.yml



See merge request !46

Use hybridutilities

This merge request simplifies the implementation of `MultiTypeBlockVector` and `MultiTypeBlockMatrix` by using hybridutilities.hh.

It is based on core/dune-common!103

Reimplement this using Hybrid::forEach. Along the way this
also fixes the bug that operator<< ignores the passed stream
and uses std::cout instead.

The new implementation is based on Hybrid::forEach

Test with non-zero matrix and print results

Reimplement this using Hybrid::forEach. This also adds some
comments and uses proper variable names to make the nan-tracking
easier to understand.

Reimplement this using Hybrid::forEach.

Reimplement this using Hybrid::forEach.

Reimplement this using Hybrid::forEach.

These separate impelmentations could be replaced by a single one,
once we have IsNumber. Currently we could use std::is_arithmetic
instead, but that's not the topic of this change.

Reimplement this using Hybrid::forEach.

Reimplement this using Hybrid::forEach. Along the way this
also fixes the bug that operator<< ignores the passed stream
and uses std::cout instead.

The implementation in MultiTypeBlockMatrix would be even
simpler, if it would provide a static size() method, because
we could then use a simple Hybrid::forEach over its entries
instead of one over all indices.

Except for those parts that do still rely on the enable trick to
test a certain feature set.

Feature/superlu5



See merge request !41

* Use correct macro
* adjust changes for other types then double, too

Arne Morten Kvarving authored 8 years ago and Christoph Grüninger committed 8 years ago

API for solver routine changed. Since there is no versioning
in SuperLU we have to do a probe to detect the new library.

[cmake][bugfix] Fix the testsuite for sequential builds

Some tests assume MPI being present, although they are not executed
in parallel. This information got lost in the transition to dune_add_test
and is restored with this patch. Thanks to @markus.blatt for noticing.

This fixes #13 

See merge request !38

Abort CGSolver when the defect is invalid

The first commit introduces the exception `SolverAbort`, derived from `ISTLError`.

The second commit makes `CGSolver` abort by throwing `SolverAbort` when the defect becomes invalid (infinite or NaN).  The check is done in every iteration before the convergence check.

These two commits fix #12.

The third and fourth commit make `BiCGStab` and `GMRes` throw `SolverAbort` when they detect a breakdown.  `SolverAbort` seemed more specific when the `ISTLError` they were throwing before.

The fifth commit documents when `SolverAbort` is thrown at the moment.

The sixth commit adds a unit tests that tries to trigger `SolverAbort` and makes sure that it is actually thrown.  It does this for the NaN-check in `CGSolver` and for the "abs(h) < EPSILON"-check in `BiCGSTABSolver` -- there a more conditions in `BiCGSTABSolver` and `RestartedGMResSolver` that throw, but I don't know how to trigger them.



See merge request !36

Here we try to solve A*x=b for x, with
```
      / 1  1 \       / 1 \
  A = |      |,  b = |   |,
      \ 1  1 /       \ 2 /
```
which has no solution.  In the CGSolver, the this leads to a NaN defect after
46 iterations.  In BiCGSTABSolver this leads to "abs(h) < EPSILON" after 1.5
iterations.

BiCGSTABSolver and RestartedGMResSolver also throw SolverAbort when they
detect "breakdown", checking for that is left as a todo.

Don't throw std::exception but print message and exit

Fixes dune-common#23

See merge request !39

Fixes dune-common#23

Some tests assume MPI being present, although they are not executed
in parallel. This information got lost in the transition to dune_add_test
and is restored with this patch. Thanks to @markus.blatt for noticing.

[cleanup] fix some typos in documentation strings and error messages



See merge request !37

[bugfix] Fixes access to non-existing parallel info in FastAMG::recalculateHierachy

recalculateHierarchy() assumed that there is information avaiable
that is only there in parallel runs. This failed miserably.

This commit fixes this be implementing dummy versions for
redistributing matrices in  a sequential run and does not
query any parallel stuff any more

This closes #11.

See merge request !34

Merge branch 'feature/make-matrixredisttest-compile-again' into 'feature/fix-fastamg-buildhierarchy'

[matrixredistribute.hh] Fix missing #include <dune/istl/paamg/pinfo.hh>.

The previous commit made fastamg compile, but broke compilation of
matrixredisttest for me.  This makes matrixredisttest compile again.

See merge request !35