On Thu, Jun 12, 2014 at 6:24 PM, Ataollah Mesgarnejad
<ames...@tigers.lsu.edu> wrote:
> Dear all,
>
> When I try to load a series of nemesis mesh files that I created by:
>
> Mesh mesh(init.comm(), dim);
>
> mesh.read(in_file);
>
> Nemesis_IO(mesh).write(out_file);
>
>
> using my code (when compiled with libMesh that has parmesh enabled) I get
> the following error:
>
> Error reading node cmap node and processor ids!
> ../../src/mesh/nemesis_io_helper.C, line 376, compiled Jun 11 2014 at
> 10:01:19
>
>
> I was wondering if anyone encountered anything similar or had an idea about
> what might be going wrong?
I'm guessing there is a problem with your "in_file", since Nemesis_IO
does seem to be able to write, read, and write again a mesh generated
via MeshTools::Generation::build_square, see test code below.
--
John
// This test code uses the NemesisIO::write() function followed by the
// NemesisIO::read() function to test that we can read the files we've
// written back in.
#include <iostream>
#include "libmesh/libmesh.h"
#include "libmesh/parallel_mesh.h"
#include "libmesh/nemesis_io.h"
#include "libmesh/mesh_generation.h"
using namespace libMesh;
int main (int argc, char** argv)
{
LibMeshInit init(argc, argv);
{
// Must run this util in parallel:
if (global_n_processors() != 2)
libmesh_error_msg("Run this test on two processors!");
// Construct+Write step
{
ParallelMesh mesh;
MeshTools::Generation::build_square (mesh, 10, 10, 0., 1, 0., 1, QUAD4);
Nemesis_IO writer(mesh);
writer.write("nemesis_read_write.e");
}
// Read+Write step
{
ParallelMesh mesh;
{
Nemesis_IO reader(mesh);
reader.read("nemesis_read_write.e");
}
{
Nemesis_IO writer(mesh);
writer.write("nemesis_read_write_2nd.e");
}
}
}
return 0;
}
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