I haven't had to work on the intersection between FFI and multithreading, so I can't comment on that. I was more commenting on the ease-of-use of normal multith

I haven't had to work on the intersection between FFI and multithreading, so I can't comment on that. I was more commenting on the ease-of-use of normal multithreading within a Julia program, and the availability of primitives around it. I've found it much easier to take an existing working program and parallelize it in Julia, than in most other languages I've worked with. (Granted, a lot of this is simply that Julia is a newer language and hence gets to design these into the language from the get-go instead of adding the parts piecemeal over years.)