loading files in parallel not working with foreach + data.table

Question

I would like to use foreach in conjuction with data.table (v.1.8.7) to load files and bind them. foreach is not parallelizing, and returni

Answer 1

Just to get this answered:

As the warning message tells you, there is no parallel backend registered for foreach. Read this vignette to learn how to do that.

Simple example from the vignette:

library(doParallel) 
cl <- makeCluster(3) 
registerDoParallel(cl) 
foreach(i=1:3) %dopar% sqrt(i)