Sim-ARM1136: A case study on the accuracy of the cycle-accurate simulator

Sung Woo Chung, Gi Ho Park, Hyo Joong Suh, Han Jong Kim, Jung Bin Im, Jung Wook Park, Sung Bae Park

Research output: Contribution to journalArticlepeer-review


Microarchitecture is difficult to be evaluated on the silicon level, due to the time and cost. Accordingly, most researches rely on cycle-accurate simulators to evaluate the performance. At the time of development, the cycle-accurate simulator must have been validated. However, off-the-shelf processors have been continuously improved, since the cycle-accurate simulator was developed. Thus, the improved features should be implemented into the simulator for accurate performance evaluation. In order to explore the accuracy of the cycle-accurate simulator, we modified the cycle-accurate model (Sim-Outorder) of Simplescalar suite to adopt off-the-shelf processor (ARM1136) features. The difference between the IPC (instruction per cycle) of the modified model (Sim-ARM1136) and the IPC of the original model (Sim-Outorder) is 19%, on average. Furthermore, it is difficult to find a relation between the simulation results from Sim-ARM1136 and those from Sim-Outorder, which might mislead to different conclusions.

Original languageEnglish
Pages (from-to)137-144
Number of pages8
JournalMicroprocessors and Microsystems
Issue number3
Publication statusPublished - 2006 May 5

All Science Journal Classification (ASJC) codes

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications
  • Artificial Intelligence


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