The problem is the simulation of the detector. Running delphes. This takes ages.
I want to also parallelize the entire code, which is high on the to-do list. But this development is not the priority at the moment, mainly because of a lack of manpower. We are two developers overwhelmed by many other things. You can guess the rest ;)
What sort of parallelization are you looking at?
I've been there. Am there, actually.
We have machines with lots of CPUs. This is what I am targeting. I have vague ideas but no time :)