Christoph Pospiech <christoph.pospi...@de.ibm.com> wrote on 06/03/2010
02:00:35 AM:
> Hi,
>
> the Array class has a raw() function that yields a Rail. Can I safely
assume
> that this is the representation of the data in memory ? In particular,
if two
> Arrays are built on the same region then raw(i) would point to
corresponding
> elements for both Array objects for every 0 <= i < raw().length() ?
An Array also has a Layout object that represents the data layout in
memory.
For now, it only supports row-major layout, so your assumption is correct,
but that may change in the future. When it does change, an array with
column-major layout will obviously have different offsets for the same
elements than an array with row-major layout, even if the region is the
same.
Igor
--
Igor Peshansky (note the spelling change!)
IBM T.J. Watson Research Center
X10: Parallel Productivity and Performance (http://x10-lang.org/)
XJ: No More Pain for XML's Gain (http://www.research.ibm.com/xj/)
"I hear and I forget. I see and I remember. I do and I understand" --
Confucius
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