Dear Libmesh develepers,
I want to create different instances of mesh on several MPI processes. Then I
want to output the mesh from one MPI process.
I am facing problems with the following code:
#include "libmesh/libmesh.h"
#include "libmesh/mesh_generation.h"
#include "libmesh/mesh.h"
int main(int argc, char ** argv)
{
MPI_Init(&argc, &argv);
{
libMesh::LibMeshInit init (argc, argv,MPI_COMM_WORLD);
libMesh::Mesh mesh(libMesh::Parallel::Communicator(MPI_COMM_SELF));
libMesh::MeshTools::Generation::build_cube (mesh,
10, 10, 5, 0.0, 2.0, 0.0, 3.0,
0.0, 4.0,libMesh::HEX8);
int rank;
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
if (rank == 0)
{
mesh.write("mesh1.vtu");
}
}
MPI_Finalize();
return 0;
}
The problems are as follows:
Problem #1) If I run the code in serial, I'm getting warning:
Warning: This MeshOutput subclass only supports meshes which have been
serialized!
Warning: This MeshOutput subclass only supports meshes which have been
serialized!
The .pvtu extension should be used when writing VTK files in libMesh.
My question:
a) how to avoid the first waning about the mesh not being serialized?
b) I tried to change the filename to mesh1.pvtu
In this case I'm getting an error message:
ERROR: Unrecognized file extension: mesh1.pvtu
I understand the following:
*.dat -- Tecplot ASCII file
*.e -- Sandia's ExodusII format
*.exd -- Sandia's ExodusII format
*.fro -- ACDL's surface triangulation file
*.gmv -- LANL's GMV (General Mesh Viewer) format
*.mesh -- MEdit mesh format
*.mgf -- MGF binary mesh format
*.msh -- GMSH ASCII file
*.n -- Sandia's Nemesis format
*.nem -- Sandia's Nemesis format
*.plt -- Tecplot binary file
*.poly -- TetGen ASCII file
*.ucd -- AVS's ASCII UCD format
*.ugrid -- Kelly's DIVA ASCII format
*.unv -- I-deas Universal format
*.vtu -- VTK (paraview-readable) format
*.xda -- libMesh ASCII format
*.xdr -- libMesh binary format,
Exiting without writing output
Problem #2) If I run the code in serial, namely mpiexec -n 2 a.out, then the
program gets frozen.
It is frozen in the output.
Thank you for your help,
Michael.
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