[mpas-developers] proposed date/time manager

[Jones, Philip W]

All,

I'm extracting a fairly long list of requirements from a previous doc.  Including things like units, calendars, time intervals, etc.

Will add directly to the tex doc and repost...

Phil

On 2/18/11 10:19 AM, "Todd Ringler" <ringler at lanl.gov> wrote:



Hi Michael,

My only addition is that we probably want to not exclude to ability to have dt change in time. The reason for this is that we expect to have a fully implicit time stepping option available in MPAS (at least in ocean and sw). With this time stepping scheme we can control error (at every time step) by changing dt.

Regarding the calendar, I would expect that we could abstract the calendar to allow for multiple mapping from time (in seconds since some point) to a day/month/year.

Thanks for pushing on this.

Cheers,
Todd

On Feb 17, 2011, at 7:17 PM, Michael Duda wrote:

> Hi, All.
>
> Todd and several of us at NCAR had the chance to meet earlier this
> week to discuss MPAS developments, and one of the items that
> appeared at the top of the list of needs in MPAS is a date/time
> manager. To begin the requirements and design process for this new
> module, I've written a first draft of a summary and requirements
> list based on the MPAS design template that was circulated in
> January; I've attached this draft herewith as a PDF document and
> LaTeX source.
>
> Since I've not consulted with anyone on the requirements in the
> document, I expect that others may have additional items to add,
> or may like to modify the requirements that I've written;
> essentially, I claim no particular ownership of the document, so
> anyone should feel free to comment, modify, or update as
> necessary.
>
> Once we are all satisfied that the stated requirements will meet
> our needs in MPAS, perhaps we could then come up with a design and
> implementation plan to meet those requirements. Also, it occurred
> to me that the time manager might also serve as a test of our
> requirements and design process to see, e.g., whether it is too
> heavy or too light-weight.
>
> Any contributions or comments on the attached document would be
> greatly welcomed!
>
> Cheers,
> Michael
> <time_manager_reqts.tex><time_manager_reqts.pdf>_______________________________________________
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---
Correspondence/TSPA/DUSA EARTH
------------------------------------------------------------
Philip Jones                                pwjones at lanl.gov
Climate, Ocean and Sea Ice Modeling
Los Alamos National Laboratory
T-3 MS B216                                 Ph: 505-500-2699
PO Box 1663                                Fax: 505-665-5926
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