test/Makefile contains the following logic: the path to executable is set with
EXE = ../bin/excitingmpi
but the individual tests instead of using EXE as the full command prepend
two directory levels to it, like this:
cd ./test01/runHe; ../../$(EXE)
If I now want to test excitingmpi on multiple cores the following will not work:
EXE = mpiexec -np 2 ../bin/excitingmpi
It would be better for EXE to represent the command to run.