Subject: Re: [Libmesh-users] pre-partitioning a big mesh



Thank you Derek,

This is really helpful.

Ata
> On Jan 11, 2017, at 6:15 PM, Derek Gaston <[email protected]> wrote:
>
> splitter also has the ability to do M->N parittioning. What this means is
> that splitter itself can be run using MPI... and can generate partitions for
> any number of processors. In fact, you can give it a list of n_procs you
> want it partition for and it will do all of them simultaneously.
>
> If you have one handy I highly recommend running splitter on a cluster that
> has a good parallel filesystem.
>
> BTW: I've used splitter to split huge multi GB Exodus files up into ~20,000
> or so partitions and it's been pretty solid.
>
> Derek
>
> On Wed, Jan 11, 2017 at 4:18 PM gmail <[email protected]
> <mailto:[email protected]>> wrote:
> Perfect. I will give it a try.
>
> Ata
> > On Jan 11, 2017, at 4:14 PM, John Peterson <[email protected]
> > <mailto:[email protected]>> wrote:
> >
> >
> >
> > On Wed, Jan 11, 2017 at 2:04 PM, gmail <[email protected]
> > <mailto:[email protected]> <mailto:[email protected]
> > <mailto:[email protected]>>> wrote:
> > Hi John,
> >
> > This is the first time I see this. So I’m not sure what this .cpr format is?
> >
> > It's the CheckpointIO format. It can write either binary or ASCII files
> > and is similar to the xdr/a format that libmesh uses to write meshes in
> > serial. Only thing it can't really do is restart from N files on M procs,
> > but that shouldn't affect your use case.
> >
> >
> > Can each processor read its own chunk using with mesh.read when libMesh is
> > compiled with parallel mesh?
> >
> >
> > Yes, that's how it should work. You can use one of the Partitioner classes
> > that comes with libmesh, or partition the mesh yourself in some
> > application-specific way.
> >
> > --
> > John
>
> ------------------------------------------------------------------------------
> Developer Access Program for Intel Xeon Phi Processors
> Access to Intel Xeon Phi processor-based developer platforms.
> With one year of Intel Parallel Studio XE.
> Training and support from Colfax.
> Order your platform today. http://sdm.link/xeonphi <http://sdm.link/xeonphi>
> _______________________________________________
> Libmesh-users mailing list
> [email protected]
> <mailto:[email protected]>
> https://lists.sourceforge.net/lists/listinfo/libmesh-users
> <https://lists.sourceforge.net/lists/listinfo/libmesh-users>
------------------------------------------------------------------------------
Developer Access Program for Intel Xeon Phi Processors
Access to Intel Xeon Phi processor-based developer platforms.
With one year of Intel Parallel Studio XE.
Training and support from Colfax.
Order your platform today. http://sdm.link/xeonphi
_______________________________________________
Libmesh-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/libmesh-users



Programming list archiving by: Enterprise Git Hosting