True for replicated array
tf = isreplicated(X)
tf = isreplicated(X) returns true for
a replicated array, or false otherwise. For a description
of a replicated array, see Nondistributed Versus Distributed Arrays. isreplicated also
returns true for a Composite X if all its elements
are identical.
With an open parallel pool,
spmd A = magic(3); t = isreplicated(A) % returns t = true B = magic(labindex); f = isreplicated(B) % returns f = false end
isreplicated(X) requires checking for equality
of the array X across all workers. This might require
extensive communication and time. isreplicated is
most useful for debugging or error checking small arrays. A codistributed
array is not replicated.