Pd-gem5: Simulation infrastructure for parallel/distributed computer systems

Mohammad Alian, Daehoon Kim, Nam Sung Kim

Research output: Contribution to journalArticlepeer-review


Improving the performance and power efficiency of a single processor has been fraught with various challenges stemming from the end of the classical technology scaling. Thus, the importance of efficiently running applications on a parallel/distributed computer system has continued to increase. In developing and optimizing such a parallel/distributed computer system, it is critical to study the impact of the complex interplay amongst processor, node, and network architectures on performance and power efficiency in detail. This necessitates a flexible, detailed and open-source full-system simulation infrastructure. However, our community lacks such an infrastructure. In this paper, we present pd-gem5, a gem5-based infrastructure that can model and simulate a parallel/distributed computer system using multiple simulation hosts. Our experiment shows that pd-gem5 running on six simulation hosts speeds up the simulation of a 24-node computer system up to 3.2× compared with running on a single simulation host.

Original languageEnglish (US)
Article number7114236
Pages (from-to)41-44
Number of pages4
JournalIEEE Computer Architecture Letters
Issue number1
StatePublished - Jan 1 2016


  • Gem5
  • Network
  • Parallel/distributed simulation

ASJC Scopus subject areas

  • Hardware and Architecture


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