R package to demonstrate issue in RcppArmadillo with element-wise arma::exp() when used with parallel FORK clusters on Unix after non-parallel call.
May be installed with --
devtools::install_github("MurrayEfford/armatest")
Running on Unix --
library(armatest)
armatest(2) # OK, 2 workers
armatest(1) # OK, 1 worker
armatest(2) # hangs, may be interrupted with ctrl-c
armatest(2, armaexp = FALSE) # std::exp OK
armatest(2, forkonunix = FALSE) # OK
armatest(2) # hangs, may be interrupted with ctrl-c