[MITgcm-support] Changing mds file suffix

[Christoph Voelker]

Oh, ok, I didn't get that, but could have from your first email. Sorry.
Christoph

Am 28/02/2017 um 07:45 schrieb Jody Klymak:
>
>
> Sent from my iPad
>
> On Feb 27, 2017, at 22:29, Christoph Voelker <christoph.voelker at awi.de
> <mailto:christoph.voelker at awi.de>> wrote:
>
>> Hi Jody,
>> also, even though it may not break the code, it will also force people
>> to change their job scripts, analysis tools etc. It is of course not a
>> terribly difficult thing to do, but unlike for the code, where everyone
>> can change doing an update, everyone has to change their scripts on
>> their own.
>
>
> The default will be the same as it is now.  No one would *have* to use
> this new naming scheme, it would just be an option.  
>
> Cheers,   Jody. 
>
>> Cheers, Christoph
>>
>> Am 27/02/2017 um 21:25 schrieb Jean-Michel Campin:
>>> Hi Jody,
>>>
>>> It should not be too difficult to support a different convention for
>>> output file suffix, but probably easier if we keep the 10
>>> digits/character.
>>>
>>> One issue with "time in second" suffix is that it does not support
>>> time-step
>>> that are not integer number of seconds, and after 320 something years
>>> it exceeds the 10 digit number limit.
>>>
>>> And regarding meta files, time is included in the list of arguments
>>> of the routine
>>> that write meta files (S/R MDS_WRITE_META in file mdsio_write_meta.F),
>>> and some *.meta files contain time information ( timeInterval = ...),
>>> such as pickup files and output files from pkg/diagnostics.
>>> But most of the I/O routines in pkg/rw and/or in pkg/mdsio don't have
>>> myTime as argument and consequently output meta files that are
>>> written from
>>> there don't have any time information.
>>>
>>> Cheers,
>>> Jean-Michel
>>>
>>> On Sun, Feb 26, 2017 at 08:35:35PM -0800, Jody Klymak wrote:
>>>> Hi all, maintainers in particular,
>>>>
>>>> There are a number of places in the code where file i/o creates a
>>>> suffix based on myIter:
>>>> ```
>>>> WRITE(suff,'(I10.10)') myIter
>>>> ```
>>>>
>>>> I???ve found this restrictive for runs where I need to change
>>>> deltaT (i.e. slow spinup past a startup transient).  I need to
>>>> rename pickup files, and, worse, previous output can have the same
>>>> iteration number as new output and get overwritten.  I???d *prefer*
>>>> to save my files as
>>>> ```
>>>> WRITE(suff,'(I10.10)') myTime
>>>> ```
>>>> i.e. `T.0000036000.data` refers to 10 hours, rather than iteration
>>>> 36000.
>>>>
>>>> Would it be possible for me to change the code above to:
>>>>
>>>> ```
>>>> CALL RW_GET_SUFF( myTime, myIter, myThid, suff )
>>>> ```
>>>>
>>>> and write that code with the default set to the above, but new
>>>> parameters that allow other formats?  (i.e. I could imagine some
>>>> would like simulation hours or days).  
>>>>
>>>> Is this a terrible idea for some reason?  If I went through the
>>>> exercise, would it have a hope of being merged?  I???d just do it
>>>> for myself, but its actually deep enough in the code that it would
>>>> be a personal nuisance to repatch every new version that I download.
>>>>
>>>> I guess while I???m at it, I???ll ask again why the meta files
>>>> don???t have the time written in them.  Is there anything that
>>>> would break by adding:
>>>>
>>>> ```
>>>> timeStepNumber = [       8640 ];
>>>> myTime = [     43200 ];
>>>> ```
>>>>
>>>> Thanks a lot,  Jody
>>>>
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>>
>>
>> -- 
>> Christoph Voelker
>> Alfred Wegener Institute for Polar and Marine Research
>> Am Handelshafen 12
>> 27570 Bremerhaven, Germany
>> e: Christoph.Voelker at awi.de <mailto:Christoph.Voelker at awi.de>
>> t: +49 471 4831 1848
>>
>>
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>
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-- 
Christoph Voelker
Alfred Wegener Institute for Polar and Marine Research
Am Handelshafen 12
27570 Bremerhaven, Germany
e: Christoph.Voelker at awi.de
t: +49 471 4831 1848

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