I'm currently working with Windows 8 with a RAM of 8 GB. I also have a data frame of 1.8 million rows and 270 columns (on which I have to perform a GLM). I've already tried to use FF and BIGGLM packages to handle the data but it hasn't worked. I keep getting this error: Error: cannot allocate vector of size 81.5 GB. How can I get around this problem? Thank you.