Re:Is this thing really usefull ? (Score 1)

network speed is fine for >40 machines compiling concurrently. and, imho a lot of the headers are cached by the systems. and, make is definitely not working correctly for me when i'm using a lot of jobs. make by itself is not the best tool for compiling with more than say 2 or 4 jobs at the same time. first of all, a make -j4 starts more than 4 jobs at a time under certain conditions, and, it can also happen that only one job is running at a time because make is waiting for it to finish. this decreases performance if you have some objects that take REALLY long to compile (in my setup i've an object which takes as long to compile as all the other objects split onto 40 machines)