[R] foreach not recognizing functions in memory

Bos, Roger roger.bos at rothschild.com
Wed Jul 13 22:14:18 CEST 2011


Saskay, 

Thanks so much for that example.  It worked fine on my system.  I didn't
realized SNOW worked on windows.  I will have to read more about it.

Thanks again,

Roger 

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of saskay
Sent: Wednesday, July 13, 2011 2:59 PM
To: r-help at r-project.org
Subject: Re: [R] foreach not recognizing functions in memory

Try the below code:
==============================

library(foreach)
library(doSNOW)
getDoParWorkers()
getDoParName()
registerDoSNOW(makeCluster(2, type = "SOCK"))
getDoParWorkers()
getDoParName()

testFun <- function(m) {
    out <- m*m
}

out <- foreach(m=1:10, .combine=rbind,*.verbose=T*) %dopar% testFun(m)

helper <- function(i) {

   out <- foreach(m=1:i, .combine=rbind,*.export="testFun", .verbose=T*)
%dopar% testFun(m)  }

 out <- helper(10)

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