ParaPLoP is a series of workshops on PatternsForParallelProgramming. The one in 2009 was organised by Tim Matson, Kurt Keutzer and Ralph Johnson.
Ralph Johnson on ParaPLoP 2009: http://www.cincomsmalltalk.com/userblogs/ralph/blogView?showComments=true&printTitle=ParaPLoP&entry=3422413608
A parallel equivalent of the PlopConference.