The time taken to compare all 990 pairs of trees by each method was calculated, replicating timing 10 times.
The below are the results of a benchmarking exercise conducted on an Intel(R) Xeon(R) CPU machine with 8.36 GB of RAM, comparing 45 trees obtained by performing successive subtree pruning and regrafting rearrangements on a pectinate starting tree.
The values reported in Smith (2020) were calculated on a modest desktop computer, and will differ from those reported here, which will have been generated on the hardware system used to render the documentation.
Reference
Smith, M. R. (2020). Information theoretic Generalized Robinson-Foulds metrics for comparing phylogenetic trees. Bioinformatics, online ahead of print. doi: 10.1093/bioinformatics/btaa614