We have proviously shown that the mathematical techniques of uniformization can serve as the basis of synchronization for the parallel simulation of continoustime markhow chain. This paper reviews the basic method and compares four defferent methods based on uniformization, evaluating their strengts and weaknesses as, a fuction of problem characteristics. The mehtods very in their use of optimism. Logical aggregation, communication management, and adaptivity, performance evaluation is conducted on the intel touchstone data multiprocessor, using up to 256 processors