sometimes works sometimes doesn't work (exactly same codes as below,这是啥米情形吖?) :-(
[未知用户]
require(c('doParallel','dplyr'))
registerDoParallel(cores=3)
rbind_all(llply(as.list(seq(2011,2015)), function(x) data.frame(Sess=x,read.csv(paste0(getwd(),'/datasets/',x,'.csv'))),.parallel=TRUE))
Error in mcfork() :
unable to fork, possible reason: Cannot allocate memory