Threads.@threads doesn't play nicely with Iterators.product

[RJDennis]

Should we expect the following to error?

Threads.@threads for i in Iterators.product(1:3,1:2)
  println(i)
end

[mcabbott]

While a normal for loop just iterates over the set, the threaded one has to be able to index it. At present that's not defined for ProductIterator, but it wouldn't be crazy to enable it.

See e.g. #48745 for discussion about indexing Generator (where there's a concern about side-effects).

[Seelengrab]

I think this could be solved with #52096

[Seelengrab]

With 1.11/#52096, the :greedy scheduler option can now handle this:

julia> Threads.@threads :greedy for i in Iterators.product(1:3,1:2)
         println(i)
       end
(2, 1)
(3, 1)
(1, 2)
(3, 2)
(1, 1)
(2, 2)

Does this solve the issue?

[RJDennis]

Yes it does, thanks.