[MITgcm-support] Computation time
cnh at mit.edu
Mon Mar 7 09:40:53 EST 2005
There is a description in the online docs in the parallelism section
6.18.3. I'm surprised you haven't read that bit!
There is also an example in MITgcm/util/exch2/matlab-topology-generator
Both pieces use the cube grid to illustrate what is done.
Göran Broström wrote:
> Hi Chris
> How do you use tiling to remove land points. Are there any code examples
> where this is used or any written ducumentation?
> Göran Broström
>> Hi Eli,
>> The code computes over land points in general.
>> For configurations with large numbers of points e.g. 1/6 and higher
>> resolution globally you can use tiling to throw away regions with no
>> For smaller configurations the overhead of skipping land points in do
>> loops actually costs more than doing null computations, so that the
>> shortest time to solution comes with computing that includes land.
>> What size of problem are you running and how long are your runs taking?
>> eliyahu biton wrote:
>>> Hello everyone!
>>> I just want to be sure, is the computation time for 'land grid point'
>>> (those indicated by zero values within the bathimetry file) the same
>>> as the 'sea grid point' ?
>>> And if so what can I do to reduce this computation time of these
>>> 'land grid point' ?
>>> Thanks Eli
>>> MITgcm-support mailing list
>>> MITgcm-support at mitgcm.org
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>> MITgcm-support at mitgcm.org
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