Make HDF5 mpi mode work and allow loading state_phys from files making use of sim.oper.axes
Created originally on Bitbucket by avmo (Ashwin Vishnu)
Was already merged in Bitbucket before import, marked as merged by the import user
- Generalize state_phys loading by using a new attribute sim.oper.axes
- Empty tuple as axes for operators0d
- Debug phys_fields MPI write
- Absolute import to allow running as: mpirun -n 2 python fluidsim/solvers/ns2d/solver.py
- Remove debug messages
Test: mpirun -n 2 python fluidsim/solvers/ns2d/solver.py