A small error in the instructions for the benchmarking exercise

A small error in the instructions for the benchmarking exercise

We noticed a small mistake in the instructions for the benchmarking exercise: in sections 4.1 and 4.2, we had mentioned the cluster criterion as a number of times the fibre diameter, but this was actually supposed to be a number of times the fibre radius.

This error has now been corrected, and the new instructions have been uploaded here.