[boost] Question regarding parallel boost graph library status

Hi, I would like to use the parallel boost graph library for projects I am working on and was wondering whether I could get an update on its development. I am for example wondering: 1) Whether this is still an projet under active development and how many people are working on it. 2) What the status of the mpi/threading implementation is. 3) What are the machines on which the implementation has been tested (and on how many processors). I am interested in using it on HPC machines such as Cray and IBM which includes more than 100k processors. Thank you, Fabien Delalondre