Dear Axel and Steve
Apologies for coming back to this only now.
Of course, the accuracy of the minimization should be adequate with respect to the desired result.
Nevertheless, I guess you might agree that obtaining different minimization results due to employing
a different number of MPI tasks can be quite startling - in particular for beginners.
I am going to dive deeper into parallel programing be the middle of next year and might just revisit
the propagation of these rounding differences in different parallel contexts as a challenging exercise.
Thank you very much again for your help
Hendrik