Hi Igor,
I am using X10 2.0. So, how would the solution be different in this case?
Thanks,
Sarat
On Tue, Nov 10, 2009 at 1:58 PM, Igor Peshansky <ig...@us.ibm.com> wrote:
> sarat poluri <sarat.pol...@gmail.com> wrote on 11/10/2009 02:03:23 PM:
>
> > Hi,
> >
> > How can i distribute a n-dimensional array as blocks across all places
> and
> > then initialize each element of that array?
> >
> > i have an array which is first declared as a 5-D array and then inside a
> > function the array is initialized with the appropriate distribution
> taking
> > the bounds of the region from the parameters of that function.
> >
> > class ATFInitMatrix
> > {
> > var ATF_dim:Array[Int](1) = Array.make[Int](0..2);
> >
> > var ATF_rm000:Array[Double](5);
> >
> > public def ATF_Init_matrix(var px:int, var py:int, var pz:int):boolean
> > {
> > var dim5:Array[Int](1) = Array.make[Int](0..4);
> >
> > ATF_dim(0) = px;
> > ATF_dim(1) = py;
> > ATF_dim(2) = pz;
> >
> > /* Allocate dynamic arrays */
> > dim5(0) = ATF_dim(0)+2;
> > dim5(1) = ATF_dim(1)+2;
> > dim5(2) = ATF_dim(2)+2;
> > dim5(3) = 1;
> > dim5(4) = 1;
> >
> > val R1 = [0..dim5(0), 0..dim5(1),0..dim5(2),0..dim5(3),0..dim5(4)];
> > val D1 = Dist.makeBlock(R1, 0);
> >
> > ATF_rm000 = Array.make[Double](D1);
> > }
> >
> > public def ATF_Reset():boolean
> > {
> > finish ateach(val p(i,j,k,l,n): Point(5) in ATF_rm000.dist)
> > {
> > ATF_rm000(p) = 0.0;
> > }
> > }
> >
> > The ATF_Reset function throws a badplaceexception. What are the options
> > available to do this. should i declare the ATF_rm000 array as a val
> instead
> > of var, in which case how do i declare first and initialize later or is
> > there another approach.
> >
> > Please advice.
>
> Hi, Sarat,
>
> You are not getting a BadPlaceException because you're accessing the wrong
> point in the distribution. You are getting it because you are trying to
> access the field ATF_rm000 from the current object, which lives in place
> 0.
>
> In the below, I'll assume you're using X10 1.7. If you are using X10 2.0,
> the solution will be different.
>
> I would make ATFInitMatrix a value class (thus ATF_rm000 becomes a val
> field that you have to initialize early). Then you can access all of its
> fields at any place.
> 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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