Make this package's functions available on parallel cluster workers

Used by all *_bootstrap() functions before dispatching iterations via parallel::parLapply(). Tries to have each worker library() the installed package; if that is not possible (e.g. during devtools::load_all() development, where the package is not installed), falls back to exporting every object in the namespace environment of a representative function from the algorithm being bootstrapped.

Usage

setup_cluster_worker(cl, fun)

Arguments

cl

A parallel cluster object (from parallel::makePSOCKcluster()).

fun

A function belonging to the package whose namespace environment should be used as the fallback export source (e.g. lingam_direct, lingam_rcd, lingam_parce, lingam_multi_group).

Value

NULL, invisibly. Called for the side effect of preparing cl.