Create Parallel Lapply

Sets up parallel processing lapply function for Windows, Mac OS or Linux.

Usage

create.parallel.lapply(
  asp,
  exports,
  parallel = TRUE,
  threads = NULL,
  export.env = parent.frame(),
  dev.mode = FALSE,
  package.path = NULL,
  allow.mclapply.mac = FALSE
)

Arguments

asp

The AutoSpectral parameter list.

exports

The vector of variables and functions to pass to the clusters.

parallel

Logical, controls whether parallel processing is used. Default is TRUE.

threads

Numeric, number of threads to use for parallel processing. Default is NULL which will revert to asp$worker.process.n if parallel=TRUE.

export.env

The environment containing other functions and global variables potentially needed by the clusters. Default is parent.frame().

dev.mode

Logical, allows testing of function while in development. Default is FALSE.

package.path

File.path to the R package files for AutoSpectral to permit loading of the functions via devtools::load_all() while in dev.mode. Default is NULL.

allow.mclapply.mac

Logical, if TRUE permits mclapply() forking on Mac OS. Default FALSE forces PSOCK cluster use on Mac to prevent multithreaded Accelerate BLAS from crashing parallels when matrix ops are used.

Value

An lapply function, either based on parLapply for Windows or mcLapply on Mac OS and Linux. If parallel backend initialization fails, sequential lapply is returned.