plotscaling: the speedups and efficiencies are now normalized with respect to the average serial runtime for the different modes (mpi, hybrid, threads), but for each system seperately
plotscaling: the speedups and efficiencies are now normalized with respect to the average serial runtime for the different modes (mpi, hybrid, threads), but for each system seperately

SKIRT/PTS,SKIRT/PTS,SKIRT/PTS