"Eduardo Rocha" <[EMAIL PROTECTED]> wrote on 12/11/2007 08:26:31 AM:
> Hi,
>
> I would like to know how to iterate over a single row or column of a
> X10 matrix. For instance, I have the follow matrix:
>
> dist D = dist.factory.block([0:1, 0:7]);
> final double[.] darr = new double[D];
>
> and I want to interact over the second row. How can I do that? The
> next code interact over the entire matrix. How can I change it to
> interact only over the second row:
>
> finish ateach(point p: darr) {
> darr[p] = here.id;
> }
>
> Thanks in advance,
> Eduardo
Hi, Eduardo,
You can use
region row = [0:7];
dist D = dist.factory.block([0:1, row]);
final double[.] darr = new double[D];
finish ateach (point p : D | ([1, row])) {
darr[p] = here.id;
}
In other words, you don't have to iterate over the whole distribution.
The above is the simplest way I know to get the right points in the
right places for a block distribution.
Igor
--
Igor Peshansky (note the spelling change!)
IBM T.J. Watson Research Center
XJ: No More Pain for XML's Gain (http://www.research.ibm.com/xj/)
X10: Parallel Productivity and Performance (http://x10.sf.net/)
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