[Dune] Assertion error when running Dune greed in parallel

[Markus Blatt]

Hi,

would you mind to share your setup code for the grid?

Markus

On Fri, Jul 05, 2019 at 09:24:33AM +0000, Guichard, Roland wrote:
> Dear Dune people,
> 
> I am currently working on a project to update a home made Dune module (peits) to the newest Dune modules. Peits was previously running fine with Dune modules (common, fem, grid, alugrid, geometry) v2.3.
> 
> Now I am trying to update to the same Dune modules v2.6. I have managed to compile (under GNU compiler) and run serially Peits with Dune2.6 but the issue appears when I run in parallel using MPI. This occurs when the gridPtr is called,
> 
> And trying to create the grid from a dgf file, especially the assertion:
> 
> https://gitlab.dune-project.org/core/dune-grid/blob/master/dune/grid/io/file/dgfparser/gridptr.hh#L281
> 
> Basically, what I have narrowed down is:
> 
> 
>   *   The MPI rank 0 runs fine. It fetches all parameters from files, calls the DGFGridFactory, initializes it etc.
>   *   The MPI rank 1 comes to the same point but I have checked that the initialisation of the DGFGridFactory is not setting the necessary parameters the same way, I.e. the elParam_ size is set to 0 (whereas ~57000 in MPI rank 0) causing the above assertion to fail.
> 
> I wanted to know if there is a dedicated procedure to create a grid in parallel which I am missing at this point. Could you advise on this issue ?
> 
> That would be really helpful.
> 
> Kind regards,
> 
> Dr. Roland Guichard
> Research Software Engineer
> UCL-RITS
> Internal Extension: 86947
> External Number: 02031086947
> 
> 
> 
> 
> 
> 
> 

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-- 
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Dr. Markus Blatt - HPC-Simulation-Software & Services http://www.dr-blatt.de
Pedettistr. 38, 85072 Eichstätt, Germany
Tel.: +49 (0) 160 97590858
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