Dear Josh
Thanks you very much for the help you provide.
Basically, I have many files and I need to apply an algorithm in each pair
of these files. (to come out with a matrix of result)
each file has a number, and I would specify for each thread which pair of
file it should compute.
I have x threads, and I want to build for each point, a list of points of
the matrix that he should compute.
e.g. I have a matrix of 2x2, with 3 threads,
I want that the first thread computes the coordinates (0,0) ; (0,2) and
(2,1),
the second thread computes the coordinates (1,1) ; (1,0) and (2,0)
and the last thread computes the coordinates (2,2); (1,2) and (0,1)
For that I want three region R1, R2, R3 where each region contains the
specified points
then each thread could take the region and just do a for(p:Point in R) ....
Hope I'm not confuse.
Thanks for your help !
Rodrique D.
Hi Rodrique,
addition and subtraction (or more formally, union and difference) are
not currently defined on the Region class.
These operations were defined in previous versions of X10 -- you can see
the code commented out in x10/array/Region.x10 -- but when the Array
library was rewritten in X10 2.1 they proved difficult to implement with
the appropriate combination of generality and performance. I believe
there are plans to re-implement them but they have not been a high priority.
What use case did you have in mind? It may be possible to come up with
an algorithm that achieves the same thing without these operations, for
now. Can you provide pseudocode?
Cheers,
Josh
On 30/05/12 07:09, Rodrique Djonkou wrote:
> Dear,
>
> Thanks you very much for the help your provide.
>
> Please how could I made the addition and the soustraction of two regions ?
>
> Thanks for your help
>
> Rodrique
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