[Nek5000-users] NEK gets stuck

nek5000-users at lists.mcs.anl.gov nek5000-users at lists.mcs.anl.gov
Mon Oct 10 13:02:45 CDT 2011


I think you need to set p43=1.

Just to be sure: What's the output of 'size nek5000' and how much
memory per core do you have?



On 10/10/11, nek5000-users at lists.mcs.anl.gov
<nek5000-users at lists.mcs.anl.gov> wrote:
> Hi Stefan,
>
> The machine is up now and I checked for the memory usage. The RAM usage is
> well within the installed memory. The same problem occurs even with power of
> two processors.
>
> How does one toggle the multigrid solver?
>
> Thanks,
> Mani
>
>
>>
>> On Sun, Oct 9, 2011 at 11:39 AM, <nek5000-users at lists.mcs.anl.gov> wrote:
>>
>>> Hi Mani,
>>>
>>> What's your memory footprint? Any chance that you run out of memory?
>>> Did you try to run the same setup on a power of two processors? What
>>> happens if you disable the multigrid solver?
>>>
>>> Cheers,
>>> Stefan
>>>
>>> On 10/8/11, nek5000-users at lists.mcs.anl.gov
>>> <nek5000-users at lists.mcs.anl.gov> wrote:
>>> > Dear Nek devs,
>>> >
>>> > I'm having trouble with a run involving a box with dimensions 5:5:1
>>> > (length:breadth:height), for which I would like to go to a Rayleigh
>>> number
>>> > of 10^8. I generated the grid (.rea and .map) using the attached .box
>>> file,
>>> > but the run gets stuck at the point shown in the attached log.
>>> >
>>> > What could be the reason that NEK is stuck at that point? I suspect it
>>> has
>>> > something to do with the grid or the .map file.
>>> >
>>> > Thanks,
>>> > Mani
>>> >
>>> _______________________________________________
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>>> Nek5000-users at lists.mcs.anl.gov
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>>>
>>
>>
>



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