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<title>Re: [mpas-developers] Block Decomposition Revision</title>
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Doug,<br>
<br>
Generally, I think it’s ok. Couple of minor things below. Michael is correct in saying we want to be careful about holding onto arrays that are proportional to either number of tasks/blocks, even if they appear small now. Memory per node is not growing and
on a per-core basis will continue to shrink. I suspect we will only need these functions on start-up/initialization and may be able to deallocate after this phase is complete (and then the functions would return an error). Once we’ve set up communicators/patterns
for halos, reductions and I/O, I don’t believe we’ll have a need for these sorts of global maps. Even if we did dynamic load balancing, we’d typically be passing off a block or two from one task to another and can update locally without these global queries.
Maybe we can keep these around for now and worry about this later.<br>
<br>
For minor issues:<br>
<br>
Do we want this in the io namelist block? I think there should be a general decomposition group rather than putting this in i/o. (I have other naming preferences too, but that’ll open another can o’ worms).<br>
<br>
The last para on page 6 of the pdf is missing something “wher is the number of proc”. It appears in the tex input too, so it’s not a tex issue.<br>
<br>
Phil<br>
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On 1/27/12 2:53 PM, "Doug Jacobsen" <<a href="jacobsen.douglas@gmail.com">jacobsen.douglas@gmail.com</a>> wrote:<br>
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<blockquote><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:12pt">Hi again all,<br>
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I have now attached the newest version of this design doc.<br>
<br>
Please let me know of any other comments/questions.<br>
<br>
Doug<br>
<br>
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Correspondence/TSPA/DUSA EARTH<br>
------------------------------------------------------------<br>
Philip Jones <a href="pwjones@lanl.gov">pwjones@lanl.gov</a><br>
Climate, Ocean and Sea Ice Modeling<br>
Los Alamos National Laboratory<br>
T-3 MS B216 Ph: 505-500-2699<br>
PO Box 1663 Fax: 505-665-5926<br>
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