Everything about Full System Simulator totally explained
A
full-system simulator is a
computer program that simulates computer systems at such a level of detail that complete software stacks from real systems can run on the simulator without any modification. A full system simulator effectively provides virtual hardware that's independent of the nature of the host computer. The full-system model typically has to include
processor cores,
peripheral devices,
memories, interconnection buses, and
network connections. Full system simulation can speed the software development process by making it easier to detect, recreate and repair flaws.
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The defining property of full-system simulation compared to an
instruction set simulator is that the model allows real
device drivers and
operating systems to be run, not just single programs. Thus, full-system simulation makes it possible to simulate individual computers and networked computer nodes with all their
software, from network device drivers to operating systems,
network stacks,
middleware,
servers, and
application programs.
The use of
multi-core processors is driving the need for full system simulation, because it can be extremely difficult and time consuming to recreate and debug errors without the controlled environment provided by virtual hardware.
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Examples of full system simulation include:
- PDP-11 simulator in 1980s
- g88 in late 1980s for modeling a uniprocessor M881100-based system, capable of booting Unix
- gsim in early 1990s for modeling multiple processors with shared memory.
- Simics: starting from 1994, modeling systems using Alpha, AMD64, ARM, EM64T, IA-64, MIPS, PowerPC, SPARC-V9, and x86 CPUs
- SimOS: for MIPS-based multiprocessors
- SimNow: AMD full-system simulator for x86 and x86_64 systems
- gpsim : Microchip PICmicro system simulator
See also
- Computer architecture simulator
- simulation software
Further Information
Get more info on 'Full System Simulator'.
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