Simo - Simple Modeling

Simulation of computer architectures is hard. Harnessing the underlying infrastructure must be easy.

What is this?

Simo is a C++ library that allows to simulate computer systems. It uses a discrete-event system where a cycle-based approach is encouraged. This library has been created after years of experience with computer systems simulators (both in research and in industry) and it tries to create something that it is missing: a simple, easy to use library that does what you need.

Documentation

Guides (Markdown files inside docs folder) and Doxygen built from the main branch are stored in GitHub Pages .

Build

Build dependencies:

• CMake >= 3.31.0
• Boost (Boost.Test, Boost.TypeIndex)
• Glaze
• Doxygen (for documentation)

Library usage dependencies (headers-only):

• Boost (Boost.TypeIndex)
• Glaze

The build will produce libSimo.

The nix flake simplifies the set up of the dependencies. With nix installed you can:

• Build the package with nix build
• Run nix develop to enter a virtual environment with all the required tools installed. The GitHub actions run entering the virtual environment of nix develop.

Features

• Loading components from shared objects at runtime (examples)

Motivations of creating Simo

Simulators publicly available pretends to be easy to use, but in practice they are not. More information in docs.

Code Contributions

Contributions are welcome. Contributions MUST be:

• Easy to understand
• Easy to maintain

This can be achieved with:

• Simple logic and simple code
• Good documented code
• Proper unit-testing coverage

To Do

• Create a collector with periodic window collection functionality
• Create logging system for components
• More documentation and examples
  
• Error config in Simo::Context
• Benchmark Simo against Gem5 and SystemC