[Ncep.list.wwatch3.discussion-group] Tim's ww3_multi.inp redesign
Arun Chawla - NOAA Federal
arun.chawla at noaa.gov
Thu Dec 11 19:55:13 UTC 2014
Hello All
I am trying to restart this very important discussion that we have started
on using namelists for ww3_multi.inp
Mathieu and Tim have made some very important points about ww3_multi.inp.
Our plan is to have everyone's input over the next month till the next
wavewatch 3 discussion meeting. After which we are going to freeze the
agreed upon design and get to coding.
Please note that once the re design of ww3_multi.inp is back in the trunk
everybody will have to change their own setup. So it is imperative that
everyone chimes in on their views on using namelists for ww3_multi.inp or
at the very least be informed on the discussion. I know we have many things
on our minds and this sort of moves to the back ground. But still would be
a good idea to keep this in the fore front
On Mon, Nov 17, 2014 at 9:47 AM, Tim Campbell <tim.campbell at nrlssc.navy.mil>
wrote:
> Thanks Mathiew for the feedback. Item 1 of your proposal is exactly the
> direction I think we should go for a redesign of all ww3 input. Replace
> ww3 parsing with one or more namelists for each .inp file.
>
> > 3) There is a lot of good for the new system for multiple input. But:
> > a) I would force the user to declare explicitly the dependencies
> between
> > the grids. this is so important and then WW3 would CHECK for consistency
>
> Are you referring to the rank_id, group_id, and sibling_id?
>
> > b) the rank of the grid should probably not be a default.
>
> This can be handled by initializing the rank_id with a non-functional
> value that can then be checked after the namelist is read. This is what is
> done to make the grid name non-optional.
>
> > c) for the forcing data, it would be better not to use "grid" but
> > instead "forcing".
>
> We could be even more explicit in the data structure names with
> input_grid(i) and model_grid(i). Doing this will allow both to be in the
> same namelist.
>
> Cheers,
> Tim
>
>
> On 11/16/2014 01:31 AM, Mathieu Dutour wrote:
> > ok, since I am so nicely invited.
> > I would propose the following:
> >
> > 1) use systematically NAMELIST. This will be anyway clearer than the
> > existing code.
> >
> > 2) Remove all lines of the kind T T F F which are hard to read.
> > Instead write down as
> > Hs =T
> > Lwave = T
> > And that's all. Remember if a NAMELIST entry is missing, then the default
> > value to
> > which it is set before is used.
> >
> > 3) There is a lot of good for the new system for multiple input. But:
> > a) I would force the user to declare explicitly the dependencies
> between
> > the grids.
> > this is so important and then WW3 would CHECK for consistency
> > b) the rank of the grid should probably not be a default.
> > c) for the forcing data, it would be better not to use "grid" but
> > instead "forcing".
> >
> > 4) Rewrite the output code:
> > a) There should be a single array for the output of the kind
> > LOGICAL(NBVAR_OUT)
> > instead of the two dimensional array.
> > b) There is some sense to having group of value but they should be
> > triggered
> > differently as in
> > IF (GroupMEAN) THEN
> > HS= .TRUE.
> > .
> > .
> > END IF
> > so that the overhead in complexity is reduced.
> > c) There should not be those huge chunks of code one for each
> variable.
> > Loops exist for a reason.
> >
> > 5) Some groups are using different parameter values of the model. Those
> > things
> > are best dealt by having the constants in a special file named like
> > "ww3_mediterranean.param"
> > which of course should be a NAMELIST.
> >
> > 6) I have a perl script for converting the !/PR1 to normal ifdef if
> anyone
> > is interested.
> >
> > Best,
> >
> > Mathieu
> >
> > On Fri, Nov 14, 2014 at 7:53 PM, Arun Chawla - NOAA Federal <
> > arun.chawla at noaa.gov> wrote:
> >
> >> Hi Erick and Tim
> >>
> >> Thanks for building this prototype. I like the namelist approach,
> >> specially for the input grids as it properly identifies what type of
> input
> >> field it is without you having to count which flag corresponds to which
> >> input type. Two points
> >>
> >> 1. I am wondering if it will be possible to have a 4th flag in the first
> >> line which identifies the number of input /model grids etc. which gives
> the
> >> option to either use the classical approach for reading the grids or
> using
> >> namelists (with the caveat that all the new types of input grids can
> only
> >> be input using namelists). That will allow people to continue with
> their
> >> development work without having to change their input files
> >>
> >> 2. For the model grids I am torn. I like the namelist format that tells
> me
> >> what input grid forcings the model grid is using (without having to know
> >> which column corresponds to which input type), but I liked the table
> format
> >> for grid rank and allocation of resources for grids of the same rank. It
> >> was easier to move resources around for grids of the same rank. This is
> >> probably more of a getting used to idea
> >>
> >> Others please chime in with your opinions too. This affects everyone.
> >>
> >> Thanks
> >>
> >> Arun
> >>
> >> On Wed, Nov 12, 2014 at 1:08 PM, Erick Rogers <
> >> erick.rogers at nrlssc.navy.mil> wrote:
> >>
> >>>
> >>> ncep.list.wwatch3.discussion-group at noaa.gov,
> >>>
> >>> Tim will be sending a follow-up email with a coherent explanation but
> for
> >>> folks that are impatient, here is his multi.inp snippet (attached).
> >>>
> >>> Erick
> >>>
> >>> ++++++++++++++++++++++++++++++
> >>> W. Erick Rogers
> >>> Naval Research Laboratory
> >>> Code 7322
> >>> Stennis Space Center, MS, USA 39529
> >>> Office Phone #: (228) 688-4727/4870
> >>> email: Erick.Rogers at nrlssc.navy.mil
> >>> ++++++++++++++++++++++++++++++
> >>>
> >>>
> >>> On 11/12/14 08:53, Arun Chawla - NOAA Federal wrote:
> >>>
> >>>> Hello
> >>>>
> >>>> This is a reminder that we will be having the Waves discussion meeting
> >>>> in 40 minutes (10:30 local time here). Talks will be by Fabrice, UKMO
> >>>> (Jian-Guo and group) and NRL (Erick and Tim).
> >>>>
> >>>> Attached are some of the presentations that you can use to follow
> along,
> >>>> plus Jian Guo has also provided a copy of their paper on the SMC grid
> >>>> (which I should have sent earlier but forgot. My apologies)
> >>>>
> >>>> On Wed, Nov 5, 2014 at 11:40 AM, Arun Chawla - NOAA Federal
> >>>> <arun.chawla at noaa.gov <mailto:arun.chawla at noaa.gov>> wrote:
> >>>>
> >>>> Hi
> >>>>
> >>>> Please mark your calendar. We shall have the next WAVEWATCH III
> >>>> meeting on Wednesday Nov 12th from 10:30 - 11:30 EST.
> >>>>
> >>>> Please note that daylight saving time has changed so do make sure
> >>>> that you have the right time for attending the meeting.
> >>>>
> >>>> Next week's meeting will have
> >>>>
> >>>> 1. Fabrice give a presentation on developments at IFREMER
> including
> >>>> wave ice interactions (this was going to be in the last meeting
> but
> >>>> could not be done because of disturbance in the phones)
> >>>>
> >>>> 2. Jian-Guo from UKMO will give a presentation on the SMC grid
> >>>> option that his team has implemented in WAVEWATCH III
> >>>>
> >>>> 3. Erick and Tim from NRL will lead a discussion on some proposed
> >>>> changes to the code which include using CPP pre processors
> instead
> >>>> of switches and changes to ww3_multi that reflect the increasing
> >>>> number of forcing fields capabilities that are being developed
> for
> >>>> the wave model
> >>>>
> >>>> During the presentations please remember to mute your phones
> except
> >>>> when asking questions, otherwise we can get swamped by background
> >>>> noise. Also it will be great if more groups can give
> presentations
> >>>> as a way to introduce yourselves to everyone and for us to learn
> >>>> about all the wonderful activities that you are doing or
> planning to
> >>>> do. It does not have to be specific to the work done on the
> code. It
> >>>> can be ideas of research that you plan to use the code for. Maybe
> >>>> you will find people here to collaborate with.
> >>>>
> >>>> Now for the important stuff (I put this at the end so as to force
> >>>> people to read everything).
> >>>>
> >>>> For the meeting
> >>>>
> >>>> 1. GoToMeeting - MMAB/WW (Mehra)
> >>>> https://global.gotomeeting.com/join/599995453
> >>>> Meeting ID: 599-995-453
> >>>>
> >>>> 2. Join the conference call:
> >>>> 877-577-6071 <tel:877-577-6071>
> >>>> 3124918#
> >>>>
> >>>> For those who do not have gotomeeting the slides will be
> distributed
> >>>> before hand.
> >>>>
> >>>> --
> >>>> ---------------------------------------------------------------
> >>>> Arun Chawla
> >>>> Waves Team Lead
> >>>> Marine Modelling & Analysis Branch
> >>>> Room 2101
> >>>> National Center for Weather & Climate Prediction
> >>>> 5830 University Research Court
> >>>> College Park, MD 20740
> >>>> Ph: 301-683-3740 <tel:301-683-3740>
> >>>> Fx: 301-683-3703 <tel:301-683-3703>
> >>>> ------------------------------------------------------------
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> --
> >>>> ---------------------------------------------------------------
> >>>> Arun Chawla
> >>>> Waves Team Lead
> >>>> Marine Modelling & Analysis Branch
> >>>> Room 2101
> >>>> National Center for Weather & Climate Prediction
> >>>> 5830 University Research Court
> >>>> College Park, MD 20740
> >>>> Ph: 301-683-3740
> >>>> Fx: 301-683-3703
> >>>> ------------------------------------------------------------
> >>>>
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> Ncep.list.wwatch3.discussion-group mailing list
> >>>> Ncep.list.wwatch3.discussion-group at lstsrv.ncep.noaa.gov
> >>>> https://lstsrv.ncep.noaa.gov/mailman/listinfo/ncep.list.
> >>>> wwatch3.discussion-group
> >>>>
> >>>>
> >>
> >>
> >> --
> >> ---------------------------------------------------------------
> >> Arun Chawla
> >> Waves Team Lead
> >> Marine Modelling & Analysis Branch
> >> Room 2101
> >> National Center for Weather & Climate Prediction
> >> 5830 University Research Court
> >> College Park, MD 20740
> >> Ph: 301-683-3740
> >> Fx: 301-683-3703
> >> ------------------------------------------------------------
> >>
> >>
> >> _______________________________________________
> >> Ncep.list.wwatch3.discussion-group mailing list
> >> Ncep.list.wwatch3.discussion-group at lstsrv.ncep.noaa.gov
> >>
> >>
> https://lstsrv.ncep.noaa.gov/mailman/listinfo/ncep.list.wwatch3.discussion-group
> >>
> >>
> >
> >
> >
> > _______________________________________________
> > Ncep.list.wwatch3.discussion-group mailing list
> > Ncep.list.wwatch3.discussion-group at lstsrv.ncep.noaa.gov
> >
> https://lstsrv.ncep.noaa.gov/mailman/listinfo/ncep.list.wwatch3.discussion-group
> >
> _______________________________________________
> Ncep.list.wwatch3.discussion-group mailing list
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>
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>
--
---------------------------------------------------------------
Arun Chawla
Waves Team Lead
Marine Modelling & Analysis Branch
Room 2101
National Center for Weather & Climate Prediction
5830 University Research Court
College Park, MD 20740
Ph: 301-683-3740
Fx: 301-683-3703
------------------------------------------------------------
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