Overview

The OpenLB project provides a C++ package for the implementation of lattice Boltzmann methods that is general enough to address a vast range of transport problems, e.g. in computational fluid dynamics. The source code is publicly available and constructed in a well readable, modular way. This enables for a fast implementation of both academic and advanced engineering applications. It is also easily extensible to include new physical models.

Building and Running OpenLB

Download v1.7 from https://zenodo.org/records/10684609/files/olb-1.7r0.tgz.

Untar olb-1.7r0.tgz
cd olb-1.7r0
Edit config.mk

Sample build script:

#!/bin/bash
module load intel/2023.2
module load compiler mkl

MPI=impi-2021.10.0
MPI=hpcx-2.18
module load hpcx/2.18
if [[ "$MPI" =~ ^impi ]]; then
        export MPICC=mpiicc
        export MPICXX=mpiicpc
elif [[ "$MPI" =~ ^hpcx ]]; then
        export OMPI_MPICC=icc
        export OMPI_MPICXX=icpc
        export MPICC=mpicc
        export MPICXX=mpicxx
fi
make clean
make

Task and Submissions

1. Download the input .

   • Uncompress the file to OpenLB root directory.

   • cd rayleighTaylor3d.cpp

   • make

2. Run the application

   • mpirun -np <NPROC> <MPIFLAGS> rayleighTaylor3d

3. Submit the stdout, config.mk, and Makefile.