[Nek5000-users] genmap error: "infinite loop"

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

Hi Mani,

It's not a fatal flaw... particularly for the values shown.

It simply means that recursive spectral bisection could not
find a split that would yield connected subgraphs in the
domain partitioning scheme.   At the leaves of the graph
(indicated by the small values 1 2 1), this is not a big
deal.  Elsewhere, it could be detrimental to performance,
but the code would still run correctly.

Paul


On Sun, 11 Sep 2011, nek5000-users at lists.mcs.anl.gov wrote:

> Dear Nek devs,
>
> I get the following error when using genmap to generate the .map file from a
> mesh involving a large number of elements, in this case 157464 elements.
>
> infinite loop
> not connected           1           2           1           0
>
> I have attached the full log file from genmap along with the .box file used
> to generate the mesh. How does one fix this error?
>
> Thanks,
> Mani
>