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From Wikipedia, the free encyclopedia

SimOS was a full system simulator, developed in the Stanford University in the late nineties in the research group of Mendel Rosenblum.[1] It was enabled to run IRIX 5.3 on MIPS, and Unix variants on Alpha. [2]



SimOS-PPC was forked from the original SimOS as IBM's internal project, running a modified AIX kernel and userland in an emulator, developed by Tom Keller and his team in the Austin lab of IBM.[3] IBM used SimOS to facilitate development of new systems. The software used in this project is now publicly available for download for AIX 4.3 licensees.[4]


Linux/SimOS was "...a Linux operating system port to SimOS, which is a complete machine simulator from Stanford. The motivation for Linux/SimOS is to alleviate the limitations of SimOS, which only supports proprietary operating systems."[5][6]


SimBCM is an open source full system simulator based on SimOS. It simulates BCM1250, a dual-core MIPS64 SOC of Broadcom. The entire source code of SimBCM is distributed under GPL.[7] It is capable of running the Linux kernel or the NICTA::Pistachio L4 microkernel.

Similar products


The currently available commercial product, Virtutech Simics was derived from the work of the Swedish Institute of Computer Science, and was originally developed to run a full system simulation of Solaris on SPARC platform.[8] Simics was used by IBM to help develop AIX 6.1 on a simulation of the POWER6 hardware.[9][10]


RSIM was the "Rice Simulator for ILP Multiprocessors", developed at the Rice University in the late 1990s. It was able to run on Solaris, IRIX and HP-UX. The simulator is available under the University of Illinois/NCSA open source license agreement. The development is finished.[11]


Developed at the University of Michigan, M5 simulates Alpha and SPARC hardware, with support for other architectures in progress. [12]

See also

Notes and references

  1. ^ "VMware Leadership". Retrieved 2011-12-16.
  2. ^ "SimOS project page at Stanford". Archived from the original on August 24, 2005. Retrieved 2014-07-24.CS1 maint: BOT: original-url status unknown (link)
  3. ^ SimOS–PPC - Full System Simulation of PowerPC Architecture (Tom Keller, 1999)
  4. ^ IBM Austin Research Laboratory  - SimOS-PPC Software Archive
  5. ^ Linux/SimOS - A Simulation Environment for Evaluating High-Speed Communication AeSystems
  6. ^ Linux MIPS emulators - SimOS
  7. ^ SimBCM project page
  8. ^ Simics
  9. ^ Virtutech Simics Optimizes Product Development of System P Server Product Line
  10. ^ Interview with Virtutech CEO (mention of POWER6 development)
  11. ^ The RSIM project
  12. ^ The M5 Simulator System
This page was last edited on 30 September 2019, at 21:49
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