[Dune] Read in matrix and rhs, solve linear system

[Oliver Sander]

> [Buesing, Henrik] I get the following output, which is not really helpful...
>
> Catchpoint 1 (exception thrown), 0x0000003b292bcca0 in __cxa_throw () from /usr/lib64/libstdc++.so.6
> Missing separate debuginfos, use: debuginfo-install atlas-3.8.4-2.el6.x86_64 blas-3.2.1-4.el6.x86_64 glibc-2.12-1.149.el6_6.7.x86_64 libgcc-4.4.7-11.el6.x86_64 libgfortran-4.4.7-11.el6.x86_64 libstdc++-4.4.7-11.el6.x86_64

Look at the backtrace.


>
>>> Henrik
>>>
>>>
>>> %%MatrixMarket
>>> %%MatrixMarket
>>> Level 0 has 6.3058e+06 unknowns, 6.3058e+06 unknowns per proc
>>> (procs=1) aggregating finished.
>>> Level 1 has 2.45706e+06 unknowns, 2.45706e+06 unknowns per proc
>>> (procs=1) aggregating finished.
>>> Level 2 has 904947 unknowns, 904947 unknowns per proc (procs=1)
>>> aggregating finished.
>>> Level 3 has 500740 unknowns, 500740 unknowns per proc (procs=1)
>>> aggregating finished.
>>> Level 4 has 179584 unknowns, 179584 unknowns per proc (procs=1)
>>> aggregating finished.
>>> Level 5 has 85507 unknowns, 85507 unknowns per proc (procs=1)
>>> aggregating finished.
>>> Level 6 has 39132 unknowns, 39132 unknowns per proc (procs=1)
>>> aggregating finished.
>>> Level 7 has 21563 unknowns, 21563 unknowns per proc (procs=1)
>>> aggregating finished.
>>> Level 8 has 13195 unknowns, 13195 unknowns per proc (procs=1)
>>> aggregating finished.
>>> Level 9 has 10225 unknowns, 10225 unknowns per proc (procs=1)
>>> aggregating finished.
>>> Stopped coarsening because of rate breakdown 10225/9256=1.10469<1.2
>>> operator complexity: 1.62054 Building hierarchy of 10 levels
>>> (inclusive coarse solver) took 223.879 seconds.
>>> Building hierarchy took 223.88 seconds === GeneralizedPCGSolver
>>>  Iter          Defect            Rate
>>>     0        0.0181497
>>> terminate called after throwing an instance of 'Dune::MathError'
>>>
>>>
>>>
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