HI Elias,
thanks for the quick reply. Yeah, I figured that was one option to go
with but I guess I don't like the way the matrix elements are being called,
however, I guess if there is any significant improvement in comm. time maybe
that is the way to go!
Thanks again and cheers,
C.S.N
On Thu, Oct 29, 2009 at 11:36 AM, Elias SantAna
<lordcinneris_at_[hidden]>wrote:
> Hello all,
> I have the following simple MPI code. I was wondering if there was
> a workaround for sending a dynamically allocated 2-D matrix? Currently I can
> send the matrix row-by-row, however, since rows are not contiguous I cannot
> send the entire matrix at once. I realize one option is to change the malloc
> to act as one contiguous block but can I keep the matrix definition as below
> and still send the entire matrix in one go?
>
> You could just use a malloc to create a dynamic array and treat it as a
> matrix:
>
> int* pseudmatrix
> pseudomatrix = (int*)malloc(sizeof(int)*rows*collums);
>
> and then, to access row i and collum j:
>
> result = pseudomatrix[i+j*rows];
>
> This matrix can be easily sent in just one message
>
>
> --- Em *qui, 29/10/09, lam-request_at_[hidden] <lam-request_at_[hidden]>*escreveu:
>
>
> De: lam-request_at_[hidden] <lam-request_at_[hidden]>
> Assunto: lam Digest, Vol 1286, Issue 1
> Para: lam_at_[hidden]
> Data: Quinta-feira, 29 de Outubro de 2009, 14:00
>
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> 1. Re: lam Digest, Vol 1285, Issue 1 (Elias SantAna)
> 2. Passing dynamic array as whole? (Natarajan CS)
> 3. execution time of a parallel program (madhuri gupta)
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