Dear David,
For the first proposal, I managed to get CopyTo to work, I was using
localRail of type "ValRail" with a different size (smaller) of tempRail
I think thats why it was blocked.
but what about the second proposal?
Thank you,
Regards
Mohammed @ KAUST
On Tue, Jul 13, 2010 at 5:02 AM, mohammed elsaeedy <
mohammed.elsae...@kaust.edu.sa> wrote:
> 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
>
--
Thank you for your concern.
Regards,
Mohammed El Sayed
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