Demonstration how to write a field that is domain-decomposited into multiple sub-domains. Here, the full domain is a uniform cartesian grid and the fields are fragmented into eight sub-boxes.
Note that in this example all data are written into the same file. Alternatively, each cpu could write data into another file, or each timestep could go into another file, or each timestep for each cpu can go into another file. The information content is still uniquely defined in the file, but the user needs to ensure different file names in such a case if the truncation mode is used. Writing to the same file might only work in append mode, but depends on HDF5 capabilities when MPI is used (HDF5-parallel).
1.6.2