We here report the generation times that we encountered for producing data for the NPD Benchmark.
real 3m51.162s
user 16m20.525s
sys 0m8.781s
real 21m11.663s
user 148m37.189s
sys 1m1.104s
real 194m16.946s
user 1470m3.136s
sys 9m47.857s
Observe that the wall clock time (real row) increases approximately as the scale factor, and that this growth is not influenced by the amount of data to be generated.