Part Ill: Parallel Programming models The Implicit Model 1. Basic Concept: With this approach, programmers write codes using a familiar sequential programming language, and then compiler is responsible to convert automatically it into a parallel codes(ex. KAP from kuck and Associates FORGE from Advanced Parallel Research) 2. Features Simpler semantics: no deadlock; always determinate Better portability due to sequential program Single thread of control makes testing, debugging correctness verification easier Disadvantages: Extremely difficult to develop autoparallel compiler; Autopar always is low-efficiency NHPCC(Hefei)·USTC· CHINA glchenaustc edu.ciNHPCC(Hefei) •USTC •CHINA glchen@ustc.edu.cn The Implicit Model Part III:Parallel Programming Models 3 - 1