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MOSS: MObility Simulation System

A GPU-accelerated Large-scale Open Microscopic Traffic Simulation System

Website: https://moss.fiblab.net

Features

  • Efficient: MOSS adopts GPU as the computational engine, which accelerates 100 times compared to existing microscopic traffic simulators, allowing rapid simulation of large-scale urban road networks.
  • Realistic: MOSS provides the cutting-edge AIGC method to generate globally available realistic OD matrices for travel demand generation and allows the user to quickly calibrate the simulation parameters to obtain realistic simulation results.
  • Open: The simulator, toolchain, and sample programs will be open-sourced on Github for community access, and we hope that more people will join in the development and application of MOSS.

Related Repositories

  • mosstool: The toolchain for MOSS, URL.
  • sample programs: The sample programs for MOSS, URL.

Installation

Prerequisites

  • Linux
  • CUDA 11.8
  • Python >= 3.8

Install

pip install python-moss

FAQ

Q1: How to resolve the error ImportError: /.../libstdc++.so.6: version 'GLIBCXX_3.4.30' not found?

A1: Run conda install -c conda-forge libstdcxx-ng=12 in the current conda environment.

Development

Build

  1. Install Boost
wget -O boost_1_86_0.tar.gz https://archives.boost.io/release/1.86.0/source/boost_1_86_0.tar.gz
tar -zxvf boost_1_86_0.tar.gz
cd boost_1_86_0
./bootstrap.sh --with-libraries=filesystem,iostreams,program_options,regex,system --prefix=/usr/local  # avro dependency
./b2 install
cd ..
rm -r boost_1_86_0
rm boost_1_86_0.tar.gz

From v0.4 to v1.0

That is what we change and why we change it.

  • Focus on the microscopic traffic simulation only (vehicle and pedestrian), no crowd in AOI, no bus for more clear code to support community contribution.
  • No overlap in junction to avoid deadlock following CBLab's design.
  • Can output files with widely-used data format for visualization (visualization is the first for the user to understand the simulation). We choose AVRO as the output format.
  • AOI is just as a marker of the starting/ending point of vehicles/pedestrians, no other functions for more clear code.
  • clear code structure and documentation written in English.