Mesh2Dual.jl

This julia package aims to make experiments with some algorithms on meshes to compute dual graphs, i.e. also called graphs of elements, to implement after the corresponding algorithm in the Scotch software. Some functions manipulating meshes and graphs could be used for others purposes

Compile the package

using Pkg
Pkg.activate("path/to/Mesh2Dual.jl")
using Mesh2Dual

Testing

Pkg.test("Mesh2Dual")

convert a scotch mesh file (msh) to distributed scotch mesh file (dmh)

julia msh2dmh.jl --filename data/ship001.msh --parts 3

shift a distributed mesh file by a baseval

julia shftdmh.jl --filename data/ship001-%r.dmh --shift 1 

compute a dual graph of a mesh (medit file) in parallel

mpirun -np 3 julia mesh2dgr.jl --filename mesh_oliv.mesh

compute a dual graph of a dmh (distributed mesh scotch file) to a scotch distributed graph

mpirun -np 3 julia dmh2dgr.jl --filename data/ship001-%r.dmh --ncommon 2

How to check if two distributed graphs are equal

check.jl mesh_oliv-%r.dgr mesh_0-%r.dgr

Beware, the two dgr files must be in the working directory (or calling)

Dependencies

• to run some tests you need of shared versions of libmetis and libparmetis exported with their paths into METIS_LIB and PARMETIS_LIB environments variables