Simulation Methodology

Table of contents

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Gem5 offers a wide range of pre-build configurations, aka. standard library, for CPUs, boards, caches, etc. To simplify the configuration process we provide a configuration script that is mostly constructed out the component models provided by gem5. This script is called vswarm_simple.py and will be copied into your working directory.

After installing the functions on the disk you can perform the setup step with the following command:

<gem5_root>/build/<ALL/X86>/gem5.opt vswarm_simple.py --kernel kernel --disk disk.img --mode setup --atomic-warming=50 --num-invocations=20

This will boot the kernel, function, invoke the function for 50 times and then create a checkpoint. The simulation will exit or can be killed otherwise

Once the checkpoint is created the simulation can be performed with:

<gem5_root>/build/<ALL/X86>/gem5.opt vswarm_simple.py --kernel kernel --disk disk.img --mode evaluation --atomic-warming=50 --num-invocations=20

The script was tested with ATOMIC,TIMING and O3 core which can be configured commenting the corresponding lines in the script

eval_core = CPUTypes.<TIMING/ATOMIC/O3>