Re: Co-Array Fortran

Hello,

gary.l.scott@xxxxxxxx wrote:

I think I understand basically, but not sure why it isn't often
important to know with certainty whether a coarray is local or not.
(performance?) If a coarray COULD be local (more or less), i might
structure the problem differently than if it might be indeterminately
local or remote.

A co-array element is local if and only if either:

There is no [] on the reference
-or-
The value of the index(es) indicates the this image

There are no other cases.

Note that co-arrays are defined in terms of images,
a similar question could be asked in terms of arrays
and cache lines. Both are beyond the standard.

--

Dan Nagle
Purple Sage Computing Solutions, Inc.
.