Dear David,
Thank you again for your reply, but I'm still facing some trouble
1) The first solution:
Console.OUT.println("Before copying: "+ +here.id);
finish tempRail.copyTo(0,localRail,0,tempRail.length());
Console.OUT.println("finished copying: "+ +here.id);
this is all done in the scope of place 1, so tempRail is the Rail of the
Array at place 1, where as localRail is the Rail at place 0
so when I run this it stops indefinitely at the copyTo function, and never
proceeds with execution.
2) the other proposal, which was using ValRail, the compiler gives me the
following errors, which I really don't get
*x10c++: In file included from Hello.cc:4:
Hello.inc: In member function ‘void Hello__closure__13::apply()’:
Hello.inc:290: error: ‘class x10::lang::Rail<double>’ has no member
named ‘view’
x10c++: Non-zero return code: 1
2 errors.
*
at(matrix.dist()(0,1)) // PLACE 1
{
val temp= new Array[double]([0..3],((i):Point)=>0.0);
val x1 =((matrix(0,1)) as Array[double](1));
val y =((vector(1)) as Array[double](1));
Hello.myRun(x1.raw(),y.raw(),temp.raw());
val tempValRail= (temp.raw()as Rail[double]).view();
at(matrix.dist()(0,0)) //PLACE 0
{
for(var i:int=0; i<2; i++)
{
Hello.result(i+2)+=tempValRail(i);
}
}
}
Thanks a lot
Mohammed @ KAUST
On Mon, Jul 12, 2010 at 10:32 PM, David P Grove <gro...@us.ibm.com> wrote:
>
>
> mohammed elsaeedy <mohammed.elsae...@kaust.edu.sa> wrote on 07/12/2010
> 03:43:36 PM:
> >
> > but my problem is when I want to sum up all the results in a global
> linear
> > array called result which is at place 0
> > when ever i want to add those elements that reside at place 1 to the
> values
> > of the result array, a bad place exception occurs.
> > so how can I pass an array (or the values of the array) that resides at
> > place 1 to the result array that resides at place 0?
> >
>
> There isn't quite as much support for this in 2.0.4 as there should be.
> I'm hoping to make improved support for this kind of operation part of the
> Array API for 2.0.5 (was working on it this afternoon).
>
> In 2.0.4, what you need to do is the following series of steps.
>
> (1) call the raw() method on the array at place 1 to get the backing
> Rail.
> (2) either
> (a) use one of the Rail.copyTo/copyFrom methods to copy the
> Rail from place 1 to place 0
> (b) convert the Rail to a ValRail, then capture the ValRail
> in
> an "at" to copy it to place 0.
> (3) at place 0, take the copied values from the Rail/ValRail and use
> them to update the Array.
>
> What I'm hoping to finish in time for 2.0.5 is to implement copyTo/copyFrom
> on Array so you can at least avoid having to know about the raw() method to
> copy an Array's data from an Array in one place to another Array in a
> second place.
>
> --dave
>
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--
Thank you for your concern.
Regards,
Mohammed El Sayed
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