A method and apparatus for performing a simulation by using a plurality of N processors in parallel include dividing the simulation scenario into N parts to distribute a simulation scenario to each of the processors; performing a high-detail simulation by using a first processor to which a part that includes a beginning part of the divided simulation scenario is distributed, from among the N processors; performing a fast simulation by using each of N−1 processors, other than the first processor; and performing a high-detail simulation based on a snapshot that is generated after the fast simulation is finished, by using each of the N−1 processors.