Hello,
I have configured libmesh with --enable-parmesh and I am
reading a partitioned mesh with Nemesis_IO. My mesh is too
big to refine it before partitioning - so I tried the
following:
Mesh new_mesh;
Nemesis_IO(new_mesh).read("meshfile");
if
Sorry for the last message, it was not finished yet - i
unintentionally pressed the send button.
Once again:
Hello,
I haven't tried the suggestion of Derek yet. Instead, I
wanted to try to split a smaller mesh with nemesis and see
if my code runs in parallel
(libmesh configure was done with
--
Hello,
I haven't tried the suggestion of Derek yet. Instead, I
wanted to try to split a smaller mesh with nemesis and see
if my code runs in parallel (configure with
--enable-parmesh)
I split the mesh with the following code:
Mesh mesh;
TetGenIO TETGEN(mesh);
> I apologize for not responding to these emails earlier
.
>
> Here is a basic algorithm for using NEMESIS when starting
> with a file format that _isn't_ already EXODUS _and_ your
> mesh is so large that you can't read it on "n" number of
> processors.
>
> 1. Read file into libMesh
> 2. Write
> I have spent more than 20 hours now with the simple
> problem to read a tetgen file and write it with Nemesis_IO
> i such a way that I can re-read it in parallel. My mesh
> fits on one processor - but I can only use one because a
> copy of it on a second processor wouldn´t fit anymore. I
> read
> I have spent more than 20 hours now with the simple
> problem to read a tetgen file and write it with Nemesis_IO
> i such a way that I can re-read it in parallel. My mesh
> fits on one processor - but I can only use one because a
> copy of it on a second processor wouldn´t fit anymore. I
> read
I have spent more than 20 hours now with the simple problem
to read a tetgen file and write it with Nemesis_IO i such a
way that I can re-read it in parallel. My mesh fits on one
processor - but I can only use one because a copy of it on a
second processor wouldn´t fit anymore. I read in the mesh
> >> 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
> >
In serial every processor has a copy of the mesh, 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'd either need to borrow a large memory machine for
> long enough to read in the Tetgen file and rewrite it as
> Nemes
Hello,
could someone give me an example of how to use parallelmesh?
I have the problem that I have 12GB of RAM, 8 CPU's, but a
mesh which has several GB (generated with tetgen). Now, if I
understood everything right, a copy of the mesh is kept on
every processor. I am reading the mesh with tetgen_i
Hi to all,
I am new to libmesh and quite new to finite elements as
well. I have looked through the examples and I would like to
try to modify example 9.
I want to do some thermal modeling for geological
applications. Thus, I would like to solve the diffusion
equation, but with different thermal
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