Re: [Libmesh-users] example parallelmesh???

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

On Sat, 29 Oct 2011, Rob...@un... wrote:

> In serial every processor has a copy of the mesh, right?

Right.

> Is it possible to have such a copy only on one processor and not on
> the others - this would already free some space.

You could run with only one MPI rank but with threading to make use of
the other processors.  That would free a lot of space, but might
currently be less efficient CPU-wise depending on your application and
algebraic solver software.

>> You'd either need to borrow a large memory machine for
>> long enough to read in the Tetgen file and rewrite it as
>> Nemesis, or you'd need to modify the TetGenIO to support
>> reading a pre-parallelized ParallelMesh.
>
> I had a look at the class Nemesis_IO. There seem to be some
> differences between the online documentation and the class
> provided in version 0.7.1.

You may need to use the SVN head; I forget how recent the latest
ParallelMesh development was, but it's quite possible that it wasn't
working yet in 0.7.1.
---
Roy