Please check out my wiki page first for clarification.

This document describes how to build SNAC to reproduce the models presented in

Tian and Choi (2016), "Effects of axially variable diking rates on faulting at slow spreading mid-ocean ridges",
Earth Planet. Sci. Lett., in press.

Table of Contents

1. Getting the code
2. Building SNAC
3. Running SNAC
4. Post-processing and visualizing

Get the code

Check out the waterp branch from https://github.com/kelchuan/snac-1

> git clone https://github.com/kelchuan/snac-1
> cd snac-1
> git pull https://github.com/kelchuan/snac-1 waterp

Build SNAC

Install dependencies

• Recent MPI: e.g., OpenMPI >1.6 or MPICH2 >1.5.
• libxml2

Set some environment variables for safety

For example,

export MPI_DIR=/opt/local
export MPI_BINDIR=${MPI_DIR}/bin
export MPI_INCDIR=${MPI_DIR}/include/mpich2
export MPI_LIBDIR=${MPI_DIR}/lib
export MPI_RUN=${MPI_BINDIR}/mpirun
export PATH=${MPI_BINDIR}:{$PATH}
export LD_LIBRARY_PATH=${MPI_LIBDIR}:{LD_LIBRARY_PATH}
export CC=mpicc
export CXX=mpicxx

export SNAC_DIR=${HOME}/Src/SNAC
export SNAC_BLDDIR=${SNAC_DIR}/build
export SNAC_BINDIR=${SNAC_BLDDIR}/bin
export SNAC_INCDIR=${SNAC_BLDDIR}/include
export SNAC_LIBDIR=${SNAC_BLDDIR}/lib
export PATH=${SNAC_BINDIR}:{$PATH}
export LD_LIBRARY_PATH=${SNAC_LIBDIR}:{LD_LIBRARY_PATH}

Configure and build

In snac-1/

> MAKE=gmake CC=mpicc CXX=mpic++ ./configure
> make

Note: If configure fails, delete snac-1/Makefile.system before retry.

Running SNAC

Input files are in snac-1/Snac/examples/input_file_for_3D_M_paper For instance, to run a 3D model with M 0.5 to 0.7, linear and the fast weakening,

> cd snac-1/Snac/examples/input_file_for_3D_M_paper/3D
> mpirun -np 128 Snac ./M57Lin_fast.xml

Post-processing and visualization

• Go to the output directory specified in the input file and run

> snac2vtk .

• The VTS files can be tarred and bzipped with snac-1/Snac/snac2vtk/vts_tar_cjvf.sh Go to the output directory and run

> bash snac-1/Snac/snac2vtk/vts_tar_cjvf.sh

This script will create an bzipped tar file, lowc2.tar.bz2, which contain all the VTS and PVTS files in the current directory.

• ParaView or VisIt can visualize the VTS and PVTS files.