Distributed simulation of traffic networks with Open Traffic Models.

Installation

Java

$ java -version
java version "11.0.5" 2019-10-15 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.5+10-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.5+10-LTS, mixed mode)

Open MPI

• Download
• Build:

cd $HOME
gunzip -c openmpi-4.0.5.tar.gz | tar xf -
cd openmpi-4.0.5
./configure --enable-mpi-java --with-jdk-bindir=$JAVA_HOME/bin --with-jdk-headers=$JAVA_HOME/include --prefix=$HOME/openmpi-4.0.5   
make all install
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HOME/openmpi-4.0.5/lib
export PATH=$HOME/openmpi-4.0.5/bin:$PATH
export OPENMPIJAVA=$HOME/openmpi-4.0.5/ompi/mpi/java

Metis

sudo apt update
sudo apt install metis

Build OTM-MPI

• Download the latest OTM jar file. This is the most recent file of the form otm-sim-1.0-YYYYMMDD.HHMMSS-N-jar-with-dependencies.jar.
• Assign the location of the jar file to environment variable OTMSIMJAR. For example,

export OTMSIMJAR=$HOME/Downloads/otm-sim-1.0-20190924.222012-1-jar-with-dependencies.jar

• Download the source code.
• Build the network splitter with scripts/build_splitter.sh. (Uses Maven)
• Build the runner with scripts/build_mpi.sh. (Uses OpenMPI's mpijavac command)

Usage

1. Create a scenario configuration file, for example from OSM using otm-tools.
2. Split the network (script). This script generates a series of XML files corresponding to each of the subnetworks. These should be made available to the machines that will run the MPI processes.
3. Run (script).
4. Load the results into Python using otm-tools.