More specifically, I would like to know if you ever considered the
suggestion made in the comments of the first answer, namely to somehow warn
the user if one of the processes has been killed by the out-of-memory
I am always surprised to see the random NULLs without message/warning/error
of any kind, and I think that it could be a useful feature to know whether
the function executed by mclapply returned a NULL or if the process was
killed for some reason.
In the following gist, I have an example of this (in this case non-random)