docs: def create_h5py_with_large_cache(filename, cache_size_mb):
      """
  Allows to open the hdf5 file with specified cache size
      """
      # h5py does not allow to control the cache size from the high level
      # we employ the workaround
      # sources:
      #http://stackoverflow.com/questions/14653259/how-to-set-cache-settings-while-using-h5py-high-level-interface
      #https://groups.google.com/forum/#!msg/h5py/RVx1ZB6LpE4/KH57vq5yw2AJ
      propfaid = h5py.h5p.create(h5py.h5p.FILE_ACCESS)
      settings = list(propfaid.get_cache())
      settings[2] = 1024 * 1024 * cache_size_mb
      propfaid.set_cache(*settings)
      fid = h5py.h5f.create(filename, flags=h5py.h5f.ACC_EXCL, fapl=propfaid)
      fin = h5py.File(fid)
      return fin