[MITgcm-support] exch2 with lat lon grid

[Matthew Mazloff]

Hi Patrick

I saw that but it seemed too simple -- glad to hear that works! So to confirm, there is no need to set any fancy topology files, the trick is just to set
nPy =   Number of cores needed,

and then in data.exch2
  W2_mapIO   = 1,
so the code knows it was nPy that was set to "Number of cores needed"
and then:
dimsFacets = NX, NY,
so it can rebuild the grid.

and that is it?

I'll give it a try -- sounds great!

Thanks
Matt






On Dec 21, 2014, at 12:09 PM, Patrick Heimbach <heimbach at mit.edu> wrote:

> Hi Matt,
> 
> yes, a simple example is the parallel version of verification/global_ocean.90x40x15/
> i.e. take a look at
> code/SIZE.h_mpi
> input/data.exch2.mpi
> 
> p.
> 
> On Dec 21, 2014, at 2:54 PM, Matthew Mazloff <mmazloff at ucsd.edu> wrote:
> 
>> Hello
>> 
>> I have a lat-lon grid with a good number of blank tiles. Is it possible to use exch2 such that I can request fewer cores?  Is there an example of how to implement this for a simple grid? 
>> 
>> Thanks!
>> Matt
>> 
>> 
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> 
> 
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