Enable MPI #2
Description
MPI at the moment is disabled.
Solving this issue requires:
- Add mpi in setup.py and CMakelist.txt (done but commented)
- Replace MPI_COMM_WOLRD with a g_comm everywhere in tmLQCD (patch)
- Enable halos in su3 fields
- Check what variables needs to be set for making it work
- Add tests
- Add workflow for testing both with and without MPI