MPIMapReduce.jl

Cat(dims)

Operator that performs a concatenation over the dimensions dims.

Examples

julia> c1 = MPIMapReduce.Cat(1);

julia> c1([1], [2])
2-element Vector{Int64}:
 1
 2

julia> c2 = MPIMapReduce.Cat(2);

julia> c2([1], [2])
1×2 Matrix{Int64}:
 1  2

pmapgatherv(f, op, iterators...; [root = 0], [comm = MPI.COMM_WORLD])

Apply function f to each element(s) in iterators, and then reduce the result using the concatenation operator op. Both the map and the reduction are evaluated in parallel over the processes corresponding to the communicator comm. The result of the operation is returned at root, while nothing is returned at the other processes.

The result of pmapgatherv is equivalent to that of mapreduce(f, op, iterators...).

The concatenation operator op may be one of vcat, hcat and Cat.

pmapreduce(f, op, iterators...; [root = 0], [comm = MPI.COMM_WORLD])

Apply function f to each element(s) in iterators, and then reduce the result using the elementwise binary reduction operator op. Both the map and the reduction are evaluated in parallel over the processes corresponding to the communicator comm. The result of the operation is returned at root, while nothing is returned at the other processes.

The result of pmapreduce is equivalent to that of mapreduce(f, (x, y) -> op.(x, y), iterators...).