The fastest version of OSLOM2 clustering algorithm with slightly extended I/O for the benchmarking under Clubmark. The original sources of OSLOM2 v2.5 are taken from http://www.oslom.org/software.htm. The algorithm description with the respective paper Finding statistically significant communities in networks, A. Lancichinetti, F. Radicchi, J.J. Ramasco and S. Fortunato, PLoS ONE 6, e18961 (2011) are available on the original website: http://www.oslom.org/.
The modifications are made by Artem Lutov <[email protected]>, eXascale Infolab and are available under Apache License Version 2.

Compilation for the undirected and directed input networks respectively:

$ g++ -o oslom_undir ./main_undirected.cpp -O3 -Wall
$ g++ -o oslom_dir ./main_directed.cpp -O3 -Wall