Epsim: A scalable and parallel marssx86 simulator with exploiting epoch-based execution

Minseong Kim, Chanhyun Park, Miseon Han, Youngsun Han, Seon Wook Kim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In general, a detailed modeling and evaluation of computer architectures make a cycle-accurate simulator necessary. As the architectures become increasingly complex for parallel, cloud, and neural computing, nowadays, the complexity of the simulator grows rapidly, and thus its execution is too slow or infeasible for practical use. In order to alleviate the problem, many previous studies have focused on reducing the simulation time in a variety of ways such as using sampling methods, adding hardware accelerators, and so on. In this paper, we propose a new parallel simulation framework, called Epoch-based Parallel SIMulator, to obtain scalable speedup with large number of cores. The framework is based on a well-known cycle-accurate full-system simulator, MARSSx86. From the simulator, we build an epoch, that is an execution interval, where the architectural simulation by PTLSim does not involve any interaction with QEMU. Therefore, we can simulate epochs independently, i.e., execute multiple epochs completely in parallel by PTLSim with their live-in data. Our performance evaluation shows that we achieve 12.8× speed on average with 16-core parallel simulation from the SPEC CPU2006 benchmarks and the PARSEC benchmarks, providing the performance scalability.

Original languageEnglish
Article number8579541
Pages (from-to)4782-4794
Number of pages13
JournalIEEE Access
Publication statusPublished - 2019


  • Architectural simulation
  • epoch-based execution
  • parallel simulation

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)


Dive into the research topics of 'Epsim: A scalable and parallel marssx86 simulator with exploiting epoch-based execution'. Together they form a unique fingerprint.

Cite this