[MITgcm-support] blocking exchange

[Patrick Heimbach]

Samar,

go ahead,
should be OK if you follow the way it's done in
ptracers_fields_blocking_exchanges
for your type of arrays.
No barrier needed, they are hidden in the exch routines.

-Patrick



Quoting samar khatiwala <spk at ldeo.columbia.edu>:

> Hello, I have a question about the proper use of _EXCH_XYZ_R8.
> 
> At some point in the code, I need to update overlaps for some
> arrays I have created. The arrays are declared identically to
> pTracer.
> 
> Can I simply call _EXCH_XYZ_R8(myArray...) or will this wreak havoc
> in a multiprocessor run? I am not sure if _BARRIER or something else
> needs to be declared/called before an exchange. I don't see anything
> in, say, ptracers_fields_blocking_exchanges, but just want to be sure.
> 
> Thanks, Samar
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> 


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Patrick Heimbach   Massachusetts Institute of Technology
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