Re: [Libmesh-users] A problem on memory blow up when using build_cube() for 3D mesh

[Roy S. <roy...@ic...>]

On Sat, 7 Feb 2015, Paul T. Bauman wrote:

> In addition to the ParallelMesh suggestion, you could try generating a
> smaller mesh, say 50x50x50, and call
> MeshRefinement(mesh).uniformly_refine(2)

This is the right thing to do.  IIRC we don't yet have a distributed
code path for build_cube(), which means that even if you use
ParallelMesh then the mesh generator will build a serialized mesh
first and delete remote elements second.  If you try to build the fine
mesh from scratch, you'll still run out of memory before it ever gets
to the deletion.  Building the coarse mesh first then refining it
should avoid that problem.
---
Roy