ParaPLoP is a series of workshops on Patterns For Parallel Programming. The one in 2009 was organised by Tim Matson, Kurt Keutzer and Ralph Johnson.
Ralph Johnson on ParaPLoP 2009: www.cincomsmalltalk.com 
Tim Matson is one of the authors of Patterns For Parallel Programming.
Kurt Keutzer has been heading up an effort at Berkeley to develop a Pattern Language For Parallel Programming.
Wiki on the patterns: parlab.eecs.berkeley.edu
ParaPLoP 2010: www.ademiller.com
A parallel equivalent of the Plop Conference.
See original on c2.com