dclone (version 2.1-1)

mclapplySB: Size balancing version of mclapply

Description

mclapplySB is a size balancing version of mclapply.

Usage

mclapplySB(X, FUN, ..., 
    mc.preschedule = TRUE, mc.set.seed = TRUE,
    mc.silent = FALSE, mc.cores = 1L,
    mc.cleanup = TRUE, mc.allow.recursive = TRUE, 
    size = 1)

Arguments

X

a vector (atomic or list) or an expressions vector. Other objects (including classed objects) will be coerced by as.list.

FUN

the function to be applied to each element of X

...

optional arguments to FUN

mc.preschedule

see mclapply

mc.set.seed

see mclapply

mc.silent

see mclapply

mc.cores

The number of cores to use, i.e. how many processes will be spawned (at most)

mc.cleanup

see mclapply

mc.allow.recursive

see mclapply

size

Vector of problem sizes (or relative performance information) corresponding to elements of X (recycled if needed). The default 1 indicates equality of problem sizes.

Value

• A list.

Details

mclapply gives details of the forking mechanism.

mclapply is used unmodified if sizes of the jobs are equal (length(unique(size)) == 1). Size balancing (as described in snowWrapper) is used to balance workload on the child processes otherwise.

See Also

mclapply, snowWrapper