Stop finding old SuperLU versions.

Previously CMake pretended to have found a valid
SuperLU version for DUNE even if the version was
too old (i.e. < 4). People having such an old versions
only noticed this via later compile errors of binaries
using SuperLU. That is far too late.

With this patch we introduce a compile check into the
CMake module that fails for old unsupported versions.
In that case CMake will not find SuperLU.

See merge request !52

Previously CMake pretended to have found a valid
SuperLU version for DUNE even if the version was
too old (i.e. < 4). People having such an old versions
only noticed this via later compile errors of binaries
using SuperLU. That is far too late.

With this patch we introduce a compile check into the
CMake module that fails for old unsupported versions.
In that case CMake will not find SuperLU.

[bugfix] fix number of columns for non-scalar matrix blocks



See merge request !44

Remove deprecated constructors

According to git blame the last time these constructors were changed was
in 2011.

See merge request !50

According to git blame the last time these constructors were changed was
in 2011.

Replace a C pointer by a std::unique_ptr

Simplifies the memory management.

See merge request !49

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