Instruction set simulator

An instruction set simulator (ISS) is a simulation model, usually coded in a high-level programming language, which mimics the behavior of a mainframe or microprocessor by "reading" instructions and maintaining internal variables which represent the processor's registers. Instruction simulation is a methodology employed for one of several possible reasons:

To simulate the instruction set architecture (ISA) of a future processor to allow software development and test to proceed without waiting for the development and production of the hardware to finish. This is often known as "shift-left" or "pre-silicon support" in the hardware development field. A full system simulator or virtual platform for the future hardware typically includes one or more instruction set simulators.
To simulate the machine code of another hardware device or entire computer for upward compatibility. :: For example, the IBM 1401 was simulated on the later IBM/360 through use of microcode emulation.
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Summary

To simulate the instruction set architecture (ISA) of a future processor to allow software development and test to proceed without waiting for the development and production of the hardware to finish. This is often known as "shift-left" or "pre-silicon support" in the hardware development field. A full system simulator or virtual platform for the future hardware typically includes one or more instruction set simulators.
To simulate the machine code of another hardware device or entire computer for upward compatibility. :: For example, the IBM 1401 was simulated on the later IBM/360 through use of microcode emulation.
To mon

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Statistical Fault Injection for Impact-Evaluation of Timing Errors on Application Performance

Andreas Peter Burg, Anupam Chattopadhyay, Jeremy Hugues-Felix Constantin, Georgios Karakonstantis, Zheng Wang

This paper proposes a novel approach to modeling of gate level timing errors during high-level instruction set simulation. In contrast to conventional, purely random fault injection, our physically motivated approach directly relates to the underlying circuit structure, hence allowing for a significantly more detailed characterization of application performance under scaled frequency / voltage (including supply noise). The model uses gate level timing statistics extracted by dynamic timing analysis from the post place & route netlist of a general-purpose processor to perform instruction-aware fault injections. We employ a 28 nm OpenRISC core as a case study, to demonstrate how statistical fault injection provides a more accurate and realistic analysis of power vs. error performance.

ACM2016

Statistical Fault Injection for Impact-Evaluation of Timing Errors on Application Performance

Andreas Peter Burg, Anupam Chattopadhyay, Jeremy Hugues-Felix Constantin, Georgios Karakonstantis, Zheng Wang

This paper proposes a novel approach to modeling of gate level timing errors during high-level instruction set simulation. hi contrast to conventional, purely random fault injection, our physically motivated approach directly relates to the underlying circuit structure, hence allowing for a significantly more detailed characterization of application performance under scaled frequency / voltage (including supply noise). The model uses gate level timing statistics extracted by dynamic timing analysis from the post place & route netlist of a general-purpose processor to perform instruction aware fault injections. We employ a 28 nm OpenRISC core as a case study, to demonstrate how statistical fault injection provides a more accurate and realistic analysis of power vs. error performance.

Ieee2016

Integration of Grid Cost Model into ISS/VIOLA Meta-scheduler Environment

Vincent Keller, Michela Thiémard

The Broker with the cost function model of the ISS/VIOLA Meta-Scheduling System implementation is described in details. The Broker includes all the algorithmic steps needed to determine a well suited machine for an application component. This judicious choice is based on a deterministic cost function model including a set of parameters that can be adapted to policies set up by computing centres or application owners. All the quantities needed for the cost function can be found in the DataWarehouse, or are available through the schedulers of the different machines forming the Grid. An ISS-Simulator has been designed to simulate the real-life scheduling of existent clusters and to virtually include new parallel machines. It will be used to validate the cost model and to tune the different free parameters.

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