mpi_array.globale.PerAxisRmaHaloUpdater¶

class mpi_array.globale.PerAxisRmaHaloUpdater(locale_extents, dtype, order, inter_locale_win, dst_buffer)[source]¶

Bases: mpi_array.globale.CommLogger

Helper class for performing halo data transfer using RMA via MPI windows (mpi4py.MPI.Win objects).

Methods

`__init__`(locale_extents, dtype, order, ...)	Initialise.
`calc_halo_updates`()	Calculates the per-axis halo-region updates for all inter-locale ranks (of the `inter_locale_comm`).
`do_update_halos`(halo_updates)	Performs the data exchange required to update the halo (ghost) elements of the array buffer `dst_buffer.buffer`.
`update_halos`()	Performs the data exchange required to update the halo (ghost) elements of the array buffer `dst_buffer.buffer`.

Attributes

`HI`	Halo “high index” indices.
`LO`	Halo “low index” indices.
`dst_buffer`	A `memoryview` which provides the buffer into which the halo data is written.
`dtype`	The `numpy.dtype` of the data to be exchanged in the halo update.
`halo_updates`	The `(rank_2_updates_dict, bool_sequence)` pair calculated by `calc_halo_updates()`.
`locale_extents`	Sequence of `mpi_array.distribution.LocaleExtent` objects which define the partitioning of the array.
`order`	Array order `str`, `'C'` for C memory layout.
`rank_logger`
`root_logger`