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Editorial Team
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Asked: 2026-05-21T07:18:19+00:00

I am trying to run the example for doSMP posted here : require(plyr) #

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I am trying to run the example for doSMP posted here: 

require(plyr) # make sure you have 1.2 or later installed
x <- seq_len(20)
wait <- function(i) Sys.sleep(0.1)
system.time(llply(x, wait))
require(doSMP)
workers <- startWorkers(2) # My computer has 2 cores
registerDoSMP(workers)
system.time(llply(x, wait, .parallel = TRUE))

and I get the following warnings:

Warning messages:
1: <anonymous>: ... may be used in an incorrect context: ‘.fun(piece, ...)’

2: <anonymous>: ... may be used in an incorrect context: ‘.fun(piece, ...)’

What do these warnings mean, and should I worry about them?

edit:

getRversion() = 2.12.2
packageDescription("plyr", fields="Version") = 1.4
packageDescription("doSMP", fields="Version") = 1.0-1
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1 Answer

  1. Editorial Team

    Are you using windows?
    I get the same error on linux.
    And also the same error with doSNOW.

    Then I tried with doMC instead of doSMP and it worked fine.

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