> -----Original Message-----
> From: lam-bounces_at_[hidden]
> [mailto:lam-bounces_at_[hidden]] On Behalf Of Brian A Powell
> Sent: Wednesday, October 27, 2004 11:26 AM
> To: lam_at_[hidden]
> Subject: LAM: MPI and GSL
>
>
>
> Hello,
>
> Is it possible to transmit gsl data-types (such as gsl_matrix and
> gsl_vector) via MPI_Send and MPI_Recv??
>
> Thanks,
> Brian
>
> _______________________________________________
> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
>
For the audience, GSL = GNU Scientific Library, which, as I remember it,
has a C language API.
Brian,
1. If the GSL data types you need are just contiguous regions of bytes
with no embedded pointers.
2. And if you are working on a homogeneous cluster.
Then you might be able to communicate those typed objects by
MPI_Send/Recv with minimal overhead.
For example, extract a pointer to the start of a gsl_matrix, find the
sizeof that gsl_matrix, and pass these parameters, along with type
indicator MPI_BYTE, to MPI_Send/Recv. I leave the other parameters to
you.
Vince Virgilio
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