Dear forum, I am new here, so hi to all! I am using Madgraph to generate some events about exotic physics. The problem is that when I give this line gg>(rho>(pip>j j)(pip>j j))(rho>(pip>j j)(pip>j j)) All these are declared in the particles.dat file. The problem is that it takes too much time when I am trying the ./bin/newprocess I left it working for 500 minutes and no results... It was saying: Running.... So, I tried to make it smaller and it finished too fast! Do you have any idea, why it takes too much time? Is there any way making it use both cores???