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op_mad
2006 Oct 13
3
Rmpi performance
Dear R users,
we are trying to do some parallel computing using library(snow).
In particular we have a cluster with 3 nodes
>cl <- makeCluster(3, type = "MPI")
3 slaves are spawned successfully. 0 failed.
and we want to compute the function op_mat (see below) first with the
master and then with the cluster using system.time for checking the
computational performance.
op_mat = function(mat) {
+ inv = solve(mat)
+ det_inv = det(inversa)
+ tr_inv = sum(diag(inversa))
+ return(list(c(det=det_inv,tr=tr...