new.packages(.libPaths()[1], ask=T, contriburl="file:///data/blackswan/ripley/R/packages/BioC/3.10/contrib")
update.packages(.libPaths()[1], ask=F)
update.packages(.libPaths()[1], ask=F, contriburl="file:///data/blackswan/ripley/R/packages/BioC/3.10/contrib", Ncpus=10)