[MITgcm-devel] mnc and "global" files

[Baylor Fox-Kemper]

Wait,
   The model will be outputting per-processor pickups.  How will those 
be labeled?
   -Baylor


On Sep 7, 2005, at 10:17 PM, Ed Hill wrote:

> On Wed, 2005-09-07 at 21:51 -0400, Baylor Fox-Kemper wrote:
>> Ed,
>>    While you're at it, why don't you put a p in front of the processor
>> number?
>>
>>>> pickup.0000001440.p0000.f000001.nc
>>>> pickup.0000001440.p0001.f000001.nc
>>
>> Cheers,
>>    -Baylor
>
> Hi Baylor,
>
> No!  There is no processor or sequence number!  Just a model iteration
> number and either a face index or a tile index.
>
> I'm sorry if I did a poor job of explaining that in the original email.
> I tried to point out that faces and tiles are separate.  If it helps,
> heres an ASCII graphic of what I'm talking about:
>
> Here are six cube faces:
>
>  +=======+=======+=======+=======+=======+=======+
>  |       |       |       |       |       |       |
>  |  F1   |  F2   |  F3   |  F4   |  F5   | F6    |
>  |       |       |       |       |       |       |
>  +=======+=======+=======+=======+=======+=======+
>
> which result in six per-face files for one BASENAME:
>
>   state.0000000000.f000001.nc
>   ...
>   state.0000000000.f000006.nc
>
> and heres exactly the same grid that has been divided up into four 
> tiles
> per face:
>
>  +=======+=======+=======+=======+=======+=======+
>  |T1 |T2 |T5 |T6 |T9 |T10|T13|T14|T17|T18|T21|T22|
>  |---|---|---|---|---|---|---|---|---|---|---|---|
>  |T3 |T4 |T7 |T8 |T11|T12|T15|T16|T19|T20|T23|T24|
>  +=======+=======+=======+=======+=======+=======+
>
> which results in 24 per-tile files in the format:
>
>   state.0000000000.t000001.nc
>   ...
>   state.0000000000.t000024.nc
>
> or we could split it up into different numbers of tiles per face such 
> as
> this odd but totally do-able decomposition:
>
>  +=======+=======+=======+=======+=======+=======+
>  |T1 |T2 |   |   |       |  T8   |       |T11|T12|
>  |---|---|T5 |T6 |  T7   |-------|  T10  |---|---|
>  |T3 |T4 |   |   |       |  T9   |       |T13|T14|
>  +=======+=======+=======+=======+=======+=======+
>
> which results in 14 per-tile files:
>
>   state.0000000000.t000001.nc
>   ...
>   state.0000000000.t000014.nc
>
> Ed
>
> -- 
> Edward H. Hill III, PhD
> office:  MIT Dept. of EAPS;  Rm 54-1424;  77 Massachusetts Ave.
>              Cambridge, MA 02139-4307
> emails:  eh3 at mit.edu                ed at eh3.com
> URLs:    http://web.mit.edu/eh3/    http://eh3.com/
> phone:   617-253-0098
> fax:     617-253-4464
>
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