The QFlex project is the most recent incarnation of SimFlex. Please cite the following two references if you need citations for QFlex:

QFlex v1.0. Babak Falsafi, Hossein Ajallooiean, Alexandros Daglis, Mario Drumond, Hussein Kassir, Nooshin Mirzadeh, Stanko Novakovic, Javier Picorel, Arash Pourhabibi, and Dmitrii Ustiugov. Zenodo, April 2017. [Detailed record] - [Bibtex] - [repo]

SimFlex: Statistical Sampling of Computer Architecture Simulation. Thomas F. Wenisch, Roland E. Wunderlich, Mike Ferdman, Anastassia Ailamaki, Babak Falsafi and James C. Hoe. In IEEE Micro special issue on Computer Architecture Simulation, July/August 2006. [Detailed record] - [Bibtex] - [PDF]

Please cite the following paper for a citation for the sampling methodology employed to speed up simulation turnaround times:

SMARTS: Accelerating Microarchitecture Simulation via Rigorous Statistical Sampling. Roland E. Wunderlich, Thomas F. Wenisch, Babak Falsafi and James C. Hoe. In Proceedings of the 30th International Symposium on Computer Architecture, June 2003. [Detailed record] - [Bibtex] - [PDF]