19. matprod.R
• 1000
n <- 1000
A <- matrix(rnorm(n^2), n)
B <- matrix(rnorm(n^2), n)
C <- A %*% B
•
20. clmatprod.R
library(snow)
n <- 1000
A <- matrix(rnorm(n^2), n)
B <- matrix(rnorm(n^2), n)
cpu <- 2
hosts <- rep("localhost", cpu)
cl <- makeCluster(hosts, type="SOCK")
C <- parMM(cl, A, B) # C <- A %*% B
stopCluster(cl)