Improve Documentation on SharedArrays  13922 Closed ahwillia opened this Issue on Nov 8, 2015 · 1 comment Projects None yet Labels doc parallel Milestone No milestone Assignees No one assigned 4 participants  ahwillia  timholy  tkelman  kshyatt Notifications    ahwillia ahwillia commented on Nov 8, 2015  Caveat -- I'm new to using the parallel tools in Julia, but I think this section of the documentation could use some love: http:  julia.readthedocs.org en latest manual parallel-computing  parallel-map-and-loops  In particular, it notes that the following won't work as intended:  a   zeros 10   parallel for i 1:10   a i    i end  But states that Distributed Arrays can fix this. It doesn't provide any specifics though. Simply trying:  using DistributedArrays a   dzeros 10   parallel for i 1:10   a i    i end  Doesn't produce the desired behavior either. Neither does  everywhere using DistributedArrays. However, using SharedArrays does work:  a   SharedArray Float64,10   parallel for i 1:10   a i    i end  If there is a way to make something simple like this work with DistributedArrays, I think it would be nice to include an example.  I've also seen people use  sync  parallel for i 1:10... but this doesn't seem necessary to get the desired behavior. Happy to contribute to the documentation if this sounds reasonable.  tkelman tkelman added the doc label on Nov 8, 2015  timholy The Julia Language member timholy commented on Nov 8, 2015  Certainly doc improvements would be very welcome. It sounds like a minimalist improvement would be directing users to SharedArrays rather than DistributedArrays.  As for a good illustration of DistributedArrays, I haven't used them in ages so I can't offer any useful advice. But surely there are others who can. I trust you've check the docs at https:  github.com JuliaParallel DistributedArrays-jl?  kshyatt kshyatt added the parallel label on Nov 9, 2015  ahwillia ahwillia added a commit to ahwillia julia that referenced this issue on Nov 10, 2015   ahwillia  Add pointer to SharedArrays    b78cf55  ahwillia ahwillia referenced this issue on Nov 10, 2015 Merged Edit Docs: Add pointer to SharedArrays  13937  ahwillia ahwillia closed this on Nov 17, 2015