blocks

class BlockDecomposition(nProcs, gridSizes, algo='Hybrid', gRank=None, order='C')

Bases: object

Class decomposing a cartesian space domain (1D to 3D) into a given number of processors.

Parameters:

• nProcs (int) – Total number of processors for space block decomposition.

• gridSizes (list[int]) – Number of grid points in each dimension

• algo (str, optional) –

  Algorithm used for the block decomposition :

  • Hybrid : approach minimizing interface communication, inspired from the [Hybrid CFD solver].

  • ChatGPT : quickly generated using [ChatGPT].

  The default is “Hybrid”.

• gRank (int, optional) – If provided, the global rank that will determine the local block distribution. Default is None.

• order (str, optional) – The order used when computing the rank block distribution. Default is C.

property localBounds

Bounds of the block of gRank. The points left over by an even split go one each to the first blocks.

Returns:

• iLocList (list[int]) – Global index of the first local point in each dimension.

• nLocList (list[int]) – Number of local points in each dimension.

property ranks

Coordinates of the block of gRank in the cartesian grid of blocks, which uses order.

Returns:

list[int] – Block index of gRank in each dimension.