In the April OCaml multicore monthly, we have a preprint available of our ICFP submission about the OCaml 5 multicore runtime. (Update: This paper actually won the ICFP best paper award later in the year! Read it at "Retrofitting parallelism onto OCaml").
OCaml Multicore Monthly: preprint paper available
Preprint of OCaml 5 multicore runtime paper available now
References
[1]Sivaramakrishnan et al (2020). Retrofitting parallelism onto OCaml. 10.1145/3408995