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CnrLwlss/ParallelWindows.R

Last active August 29, 2015 13:55
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ParallelWindows.R
library(parallel)
cores = 5
bigN = 50000000
# Function which can take a noticeable time to run for large N
sumnorm = function(N) sum(rnorm(N))
cl = makeCluster(cores)
parallel = system.time(parLapply(cl,replicate(cores,bigN),sumnorm))
sequential = system.time(lapply(replicate(cores,bigN),sumnorm))
stopCluster(cl)
parallel
sequential
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