Re: [Libmesh-users] A quick question about current libMesh parallel mesh representation

[Kirk, B. (JSC-EG311) <ben...@na...>]

In a word, no.

In more words, not necessarily.

We continue to carry around our original mesh data structure as a "SerialMesh" object but have implemented a "ParallelMesh" flavor where all data structures are parallelized, which has been used successfully to thousands of cores.  I don't want to quote a stale number and enrage the INL guys, so I'll let them comment from here.

-Ben


 
On Jul 14, 2014, at 12:32 PM, Hodge, Neil E. <ho...@ll...> wrote:

> I recently sat down and read
> 
> Kirk, "libMesh: a C++ library for adaptive mesh refinement/coarsening
> simulations", Engineering with Computers, 2006.
> 
> In that paper, I found the following:
> 
> "On distributed memory machines, such as PC clusters, a complete copy of
> the mesh is maintained independently on each processor. This design
> decision limits practical 3D applications to on the order of 128
> processors because of the overhead associated with storing the global
> mesh."
> 
> Is it still the case that the complete mesh is represented in every
> process?  Just curious, since the paper is from 2006 . . .  Thanks.
> 
> 
> Neil
> 
> ======================================================================
> Neil Hodge, Ph.D.
> Methods Development Group
> Lawrence Livermore National Laboratory
> 
> 
> 
> 
> 
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