Hello, I would like to send some data to other processes in a function, however, it is not successful. Only when I @spawnat in the Main module is it able to show up on the var table and be accessible within @everywhere. I must be missing something here. Thank you in advance!
julia> using Distributed
julia> addprocs(4)
julia> a = 123456;
julia> @everywhere using InteractiveUtils
julia> function send_my_data(data)
@sync begin
for p in workers()
@async @spawnat p data
end
end
end
julia> send_my_data(a)
# sending the data fails as from var table
julia> @fetchfrom 2 varinfo()
name size summary
–––– –––– –––––––
Base Module
Core Module
Main Module
# This indicates no `a` existing on other processes
julia> @everywhere begin a end
ERROR: On worker 2:
UndefVarError: a not defined ...
# However, this shows there is an `a` on other processes
julia> remotecall_fetch(()->a, 2)
123456