If you do not have a memory limit, then there is a good chance that it will finish running -- at some point. The problem with making relogit run faster is twofold: 1) The correction procedures are programmed in R, not C, so they are slower than they should be. If you are handy with C, you could try translating the R code (pretty clear, if I do say so myself) into C or C++ and then calling those functions from Zelig. 2) The estimation procedure (both for the base logit and the relogit correction) rely on serial rather than parallel processes. So having a grid isn't going to help you (except in that you're not going to run out of memory). Yours, Olivia On Tue, Dec 21, 2010 at 9:44 AM, E. Lin <elin(a)iq.harvard.edu> wrote: