Hello, Consider this:
1) library(parallel) res <- mclapply(1:2, stop) #Warning message: #In mclapply(1:2, stop) : # all scheduled cores encountered errors in user code is(res[[1]], 'try-error') #[1] FALSE 2) library(parallel) res <- mclapply(1:2, stop, mc.preschedule=FALSE) #Warning message: #In mclapply(1:2, stop, mc.preschedule = FALSE) : # 2 function calls resulted in an error is(res[[1]], 'try-error') #[1] TRUE The documentation states that: 'Each forked process runs its job inside try(..., silent = TRUE) so if errors occur they will be stored as class "try-error" objects in the return value and a warning will be given.' Is this a bug ? Thanks Karl > sessionInfo() R version 2.15.3 (2013-03-01) Platform: x86_64-unknown-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] parallel stats graphics grDevices utils datasets methods [8] base loaded via a namespace (and not attached): [1] tools_2.15.3 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
