On Jan 21, 2015, at 11:00 AM, George Bosilca <bosi...@icl.utk.edu> wrote:
> 
> As I said in my previous email it is legal to use such an overlapping 
> datatype for send operations. Thus, the datatype engine cannot prevent one 
> from creating them.

Ah, right.  Gotcha.

> We had some degree of overlap detection at some point in the past, but the 
> algorithm is quadratic in time and memory with the number of datatype 
> entries, so the cost was prohibitive.

Gotcha.

-- 
Jeff Squyres
jsquy...@cisco.com
For corporate legal information go to: 
http://www.cisco.com/web/about/doing_business/legal/cri/

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