NOTICE: plan(multiprocess) of future is deprecated

[HenrikBengtsson]

Hi.

This is a friendly reminder that plan(multiprocess) of the future package is deprecated since future 1.20.0 (2020-11-03). It will eventually become defunct and removed. The background for this can be found in futureverse/future#420.

Your flowGraph package relies on multiprocess, cf. https://github.com/aya49/flowGraph/search?q=multiprocess.

Please migrate your code to the platform-independent plan(multisession) or the Linux/macOS-specific plan(multicore). If you want to emulate what multiprocess does, you can do something like:

  if (parallelly::supportsMulticore()) {
    oplan <- plan(multicore)
  } else {
    oplan <- plan(multisession)
  }
  on.exit(plan(oplan))

BTW, if you don't already do so, please make sure to undo any plan() you set in your code, as illustrated by the above example. This is needed to guarantee that calling your code won't override settings that the user has set previously. You can read about this in https://future.futureverse.org/reference/plan.html#for-package-developers.

Thank you,

Henrik
(maintainer of the future package)

[aya49]

Thank you for the update. plan(multiprocess) changed to plan(multisession).

[HenrikBengtsson]

FYI, you still mention 'multiprocess' in a source-code comment of one of your example():s;

flowGraph/R/00_helpers.R

Lines 35 to 53 in 78a1332

	#' @title Prepares parallel loop indices.
	#' @description \code{loop_ind_f} is a helper function that splits
	#' a vector of loop indices into a list of multiple loop indices
	#' for use in parallel processes within the flowGraph package.
	#' @param x A vector of loop indices.
	#' @param n An integer, or the number of vectors to split \code{x} into.
	#' @return list of \code{n} vectors with elements from \code{x}.
	#' @examples
	#'
	#' old_loop_inds <- 1:10
	#' no_cores <- 5
	#'
	#' new_loop_inds <- flowGraph:::loop_ind_f(old_loop_inds, no_cores)
	#' # future::plan(future::multiprocess)
	#' # example_indices <- furrr::future_map(new_loop_inds, function(ii) {
	#' # purrr::map(ii, function(i) i )
	#' # s})
	#'
	#' @rdname loop_ind_f

[aya49]

Thank you Henrik!