The PaCT-2009 (Parallel Computing Technologies) conference was a four-day eventheld in Novosibirsk. The ?rst conference, PaCT 1991, was held in Novosibirsk (Academgorodok), September 7–11, 1991. The next PaCT conferences were held in Obninsk (near Moscow), August 30 to September 4, 1993; in Academgorodok (Novosibirsk), September 3–7, 2001;