There's still some active research in Parallel Prolog implementation. See this fabulous survey paper of the implementation approaches:
http://portal.acm.org/citation.cfm?id=504083.504085
Gupta, G., Pontelli, E., Ali, K. A., Carlsson, M., and Hermenegildo, M. V. 2001. Parallel execution of prolog programs: a survey. ACM Trans. Program. Lang. Syst. 23, 4 (Jul. 2001), 472-602.
Hermenegildo, in particular, continues active research in this area and is quite visible and active in the broad programming languages community.
Comments
There's still some active research in Parallel Prolog implementation. See this fabulous survey paper of the implementation approaches: http://portal.acm.org/citation.cfm?id=504083.504085 Gupta, G., Pontelli, E., Ali, K. A., Carlsson, M., and Hermenegildo, M. V. 2001. Parallel execution of prolog programs: a survey. ACM Trans. Program. Lang. Syst. 23, 4 (Jul. 2001), 472-602.
Hermenegildo, in particular, continues active research in this area and is quite visible and active in the broad programming languages community.