FredXG may also want to take a look at using Prepomax as the pre and post processor. In the tools->settings->calculix menu you can change the number of processors to use. I have used it with 1, 8, 16 and 64. with 16 CPU’s my home machine seems well balanced (as in, it uses lots of CPU and ram all the time until the problem is completed). On a work machine with 64 cores, the machine seemed to resolve problem sections quickly, but with a lot of idle time in between. As of yet, I have no idea what to change to make the machine keep using processors and be more productive. I recall a paper a few years ago that showed CPU # as a way to accelerate FEA to be a diminishing returns solution after about 8 CPUs. But like I said, 16 cores seems to be just peachy.