getCodistributor

Codistributor object for existing codistributed array

Syntax

codist = getCodistributor(D)


Description

codist = getCodistributor(D) returns the codistributor object of codistributed array D. Properties of the object are Dimension and Partition for 1-D distribution; and BlockSize, LabGrid, and Orientation for 2-D block cyclic distribution. For any one codistributed array, getCodistributor returns the same values on all workers. The returned codistributor object is complete, and therefore suitable as an input argument for codistributed.build.

Examples

Get the codistributor object for a 1-D codistributed array that uses default distribution on 4 workers:

spmd (4)
    I1 = eye(64,codistributor1d());
    codist1 = getCodistributor(I1)
    dim     = codist1.Dimension
    partn   = codist1.Partition
end

Get the codistributor object for a 2-D block cyclic codistributed array that uses default distribution on 4 workers:

spmd (4)
    I2 = eye(128,codistributor2dbc());
    codist2 = getCodistributor(I2)
    blocksz = codist2.BlockSize
    partn   = codist2.LabGrid
    ornt    = codist2.Orientation
end

Demonstrate that these codistributor objects are complete:

spmd (4)
    isComplete(codist1)
    isComplete(codist2)
end

Version History

Introduced in R2009b