I haven't been able to find it
I have however with the new version of subrip (v.1.51.1) sorted the matrix so it should go faster now.
I'm still trying to suggest the current developer for a better sorting algorithm for a faster matrix file.
Nevertheless the most up to date version can be found here and gets updated withing seconds after i finish a new subtitle set
http://techcenterdk.ddns.net:12380/SBmatrix.sum