We got reports from a user that there were troubles with certain domain
decompositions. So far the tests only looked at (approximately) square
decompositions in column-major process order.

Now, a new class of tests loops over all possible decompositions
(row * col) for a given number of total tasks.

So far, we can not confirm that there are any problems, all
possibilities work as expected.

matrices of dimension of the form 2^n * 3^m * 5^m are now allowed.
For other matrix sizes, the test is terminated. Matrix size is not
modified, as it has been the case before

There was again a case where stack-variables were loaded with
instructions that needed properly aligned memory. This only surfaced
with the Intel C compiler, where the stack layout evidently was
sufficiently different to trigger this.

This was also the case for SSE kernels

- remove runtime by not executing unecessary runs
- make sure that on gp02 impi/2017 is NOT use
- adjust reserved time on knl systems

The new Makefile rule just dumped more and more lines into the test_x.sh
script, as the ">>" operator was used always.

Pavel Kus authored Jul 20, 2017 and Lorenz Huedepohl committed Jul 25, 2017

and moved the implementation to test_util.F90

Due to the extremely slow compilation on KNL this error now surfaced, as
libelpatest.la was not ready in time, there :)

Previously we checked ortonormality of eigenvectors by comparing
the matrix S^T * S to identity matrix. The new feature is also
checking just the diagonal of the matrix S^T * S. By that we get
the information, how far are the eigenvectors from having length 1.
If it turns out to be important, we could try to normalize them
at the end of elpa, which is simple (in contrast with enforcing
better orthogonality).

This stupid bug was there since commit ae45bbb3

From now on call make check with TASKS=x, e.g.

make check TASKS=2