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It might be necessary to modify the library path. If you try to install packages on the workers and get an error to the effect that the workers "cannot install packages", you need to do this.
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# set cran mirror clusterEvalQ(cl, { options(repos=structure(c(CRAN="http://cran.fhcrc.org/"))) }) # set lib path to install packages clusterEvalQ(cl, { .libPaths( c('/home/ubuntu/R/library', .libPaths()) ) }) clusterEvalQ(cl, { install.packages("someUsefulPackage") require(someUsefulPackage) }) |
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