[Nek5000-users] Visit reader for double precision f files

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

Hi Hank,

I'm wondering if there would be a possibility of adding a
"gauss-to-gauss-lobatto" interpolator in the VisIt reader,
which would be one way of addressing the pressure data
problem.    I realize of course that VisIt at present has
no knowledge of what a spectral element is and that this
is a bit of a shift from our original approach, but perhaps
it wouldn't be so hard.   We can discuss this off-line if
wish.

Thanks!

Paul


On Thu, 13 Sep 2012, nek5000-users at lists.mcs.anl.gov wrote:

> Hi Philip,
>
> With regards to VisIt, I am happy to investigate.  IIRC, this issue came up
> before and we decided that the reader did work.  (But possibly it slipped
> off my queue and it doesn't work!!)
>
> If you can make a file available to me (hchilds at lbl.gov), I can pursue.
>
> With respect to the file format issue, someone else more knowledgable will
> need to answer.
>
> Best,
> Hank
>
> On Thu, Sep 13, 2012 at 3:41 PM, <nek5000-users at lists.mcs.anl.gov> wrote:
>
>> Dear all,
>> We were wondering whether it would be possible to include support for 64
>> bit
>> .f files in the Visit reader for Nek5000. So far, only 32 bit files are
>> supported, which we are hardly using any longer except for those files to
>> visualise with Visit; however we have quite a number of f files (snapshots)
>> from various simulations that we use for different purposes such as the
>> computation of spectra, POD modes etc. for which we naturally chose 64 bit
>> due to accuracy consideration. To be able to directly visualise such files
>> in Visit without converting them to 32 bit would be very helpful indeed.
>>
>> Another aspect that came up recently was the question on how to indicate in
>> a f file whether or not the pressure is mapped to the Pn mesh if the
>> Pn/Pn-2
>> method is used. Normally, restart files would not perform this mapping,
>> snapshot files however would do. We were wondering whether a simple
>> solution
>> could be to choose different letters in the header (say "P" for pressure on
>> the Pn mesh and "Q" for pressure on the Pn-2 mesh)?
>>
>> We could give a try for both things here if you think it would not be too
>> difficult...
>>
>> Best regards,
>> Philipp
>>
>>
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>