Modify a remote object

[greg_plowman]

@bbrunaud

In your example, is global n the variable in worker 1 or worker 2?

worker 2.

@bbrunaud

I want to move an object to another worker and modify it in place iteratively.

Maybe something like:

addprocs(1)

@everywhere begin
    defineA(src) = global const A = src
    incrementA() = (A .+= 1)
    getA() = A
end

Test it out:

p = 2
B = zeros(Int,2,2)
remotecall_fetch(defineA, p, B)
remotecall_fetch(getA, p)
remotecall_fetch(incrementA, p)
remotecall_fetch(getA, p)
B

.
You might also want to look at: How to avoid repeated data movement between processes?

See also ParallelDataTransfer, which provides helper functions for transferring data between worker processes.