r - How do I set preschedule=FALSE for llply's parallel mode? -


i want use llply perform parallel computations using multicore doparallel backend (i.e. doparallel::registerdoparallel(cores=8)), each computation take different amount of time, want set multicore preschedule option false computation. however, i'm unsure how pass option llply pass foreach pass doparallel pass mclapply. can give example of doing this?

in other words, how disable prescheduling in following code?

library(plyr) library(doparallel) registerdoparallel(cores=2) x <- llply(1:10, sqrt, .parallel=true)

you can use llply ".paropts" option that:

opts <- list(.options.multicore=list(preschedule=false)) x <- llply(1:10, sqrt, .parallel=true, .paropts=opts)

as guessed, ".paropts" option passes ".options.multicore" option foreach, propagates on doparallel, calls mclapply mc.preschedule=false.


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