[Nek5000-users] CUBIT/Moab

[nek5000-users at lists.mcs.anl.gov]

I sent these instructions to a different Nek user a few days back:

Ok.  I think in the repo version of Nek, you have to name your mesh input "input.h5m", which you get by translating from 
.cub to .h5m (the latter is the hdf5-based native file representation MOAB uses).  If you want to run this in parallel, 
you also need to run a partitioner on the file (using tools/mbzoltan in moab), and change the code at the beginning of 
nek/3rd_party/moab.f, nekMOAB_load subroutine, to use PARTITION=PARALLEL_PARTITION option.  Finally, you'll need to 
change the value used for lelt in the SIZE file (set it to the number of elements in the mesh).


- tim


On 09/20/2011 01:39 PM, Aleksandr Obabko wrote:
> Hi Josh,
>
> I have been told that the way to convert .cub file into MOAB's native .h5m file is using mbconvert utility which should be in MOAB's bin directory.
>
> (https://svn.mcs.anl.gov/repos/ITAPS/MOAB/tags/preVersion4.0/README.IO).
>
>
> Please, try
>
> mbconvert blah.cub blah.h5m
>
> Best,
> Aleks
>
>
>
>
> ----- Original Message -----
> From: nek5000-users at lists.mcs.anl.gov
> To: "nek5000-users"<nek5000-users at lists.mcs.anl.gov>
> Sent: Monday, September 19, 2011 12:33:44 PM
> Subject: [Nek5000-users] CUBIT/Moab
>
> Neks,
>
> We are interested in using CUBIT meshes in our Nek runs.  I took a
> look at the "moab" example in the source, but I'm still unsure of the
> proper process of getting a CUBIT-generated mesh into Nek.
>
> I have created a CUBIT mesh (.cub), and have also downloaded,
> compiled, and installed MOAB.  I see in the example that a .h5m file
> is used (the native format of MOAB), but I don't know how to generate
> it through MOAB (from my .cub file).
>
> I realize that this is probably more of a MOAB question than a Nek
> question, but are there some simple instructions/examples to help me
> in understanding how to use a CUBIT mesh in Nek?  Any help would be
> appreciated!
>
> Thanks,
>

-- 
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"You will keep in perfect peace him whose mind is
   steadfast, because he trusts in you."               Isaiah 26:3

              Tim Tautges            Argonne National Laboratory
          (tautges at mcs.anl.gov)      (telecommuting from UW-Madison)
          phone: (608) 263-8485      1500 Engineering Dr.
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