(j3.2006) CO_BROADCAST vs. CO_REDUCE

[Bill Long]

On Sep 18, 2014, at 2:56 PM, Bill Long <longb at cray.com> wrote:

> 
> The call to CO_REDUCE nominally only supplies the address of A and the entry point for the OPERATOR function. 

So, that?s not right for A.  Since A is allowed to be an array, the call will somehow need to also supply element size and shape information.  Most likely just the normal descriptor used for other intrinsics with array arguments.  Internally, CO_REDUCE uses this information to generate the addresses for each of the elements of A to be used in the call to OPERATOR.

Cheers,
Bill


Bill Long                                                                       longb at cray.com
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