mpi_array.update.MpiHaloSingleExtentUpdate¶

class mpi_array.update.MpiHaloSingleExtentUpdate(dst_extent, src_extent, update_extent)[source]¶

Bases: mpi_array.update.ExtentUpdate

Source and destination indexing info for updating the whole of a halo portion. Extends ExtentUpdate with API to create mpi4py.MPI.Datatype instances (using mpi4py.MPI.Datatype.Create_subarray()) for convenient transfer of sub-array data.

Methods

`__init__`(dst_extent, src_extent, update_extent)
`initialise_data_types`(dtype, order)	Assigns new instances of mpi4py.MPI.Datatype for the `dst_data_type` and `src_data_type` attributes.

Attributes

`dst_data_type`	A `mpi4py.MPI.Datatype` object created using `mpi4py.MPI.Datatype.Create_subarray()` which defines the sub-array of halo elements which are to receive update values.
`dst_extent`	The locale `LocaleExtent` which is to receive sub-array update.
`src_data_type`	A `mpi4py.MPI.Datatype` object created using `mpi4py.MPI.Datatype.Create_subarray()` which defines the sub-array of halo elements from which receive update values.
`src_extent`	The locale `CartLocaleExtent` from which the sub-array update is read.
`update_extent`	The `IndexingExtent` indicating the halo sub-array which is to be updated.