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.

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

Document that `BiCGSTABSolver` and `RestartedGMResSolver` can throw
`SolverAbort` when they detect a breakdown.

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

SolverAbort is derived from ISTLError, so any existing catch-clause should
still apply.

SolverAbort is derived from ISTLError, so any existing catch-clause should
still apply.

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.

[amg][bugfix] Fix dirichlet processing in FastAMG

The comment and surroundig code indicate that FastAMG should
solve during pre() for dirichlet entries. This is determined
by checking if a row does contain a diagonal entry while
all other entries are zero.

The check for this was buggy because hasDiagonal was always false.
This merge commits sets it to true if a diagonal entry is found and nonzero.

See merge request !32

This allows other code to access field_type and real_type for a MultiTypeBlockVector
using the FieldTraits class.  Caveat: in principle, individual entries of a
MultiTypeBlockVector could use different field_types.  The implementation always
returns the first one.

Adding a new template perameter before the existing ones is
a non-compatible interface change, because code that explicitly
instantiates the template will fail to compile afterwards.

Putting the new template parameter to the end fixes the issue