GPUs for MCTS?

Talk by Avi Bleiweiss, covers alot of basics of game tree search:

 http://nvidia.fullviewmedia.com/gtc2010/0922-d-2207.html (also has a good bibliography on general game tree search methods)

1. Problems:
1. Deep recursion, limited stack
2. Divergent threads
3. (some others)
4. GPUs are designed for arithmetic, standard tree search doesn’t leverage this
2. CPU outperforms the GPU in 4x4x4 tic tac toe when the # of simultaneous games is under 2000, so maybe going to GPU isn’t an auto-win

From the GPU tech conference: http://www.gputechconf.com/page/gtc-on-demand.html