If you don't know the size a priori, you could always make a derived
type that covers the memory region you want, send the size of that
first, and then send the message with the real data (i.e., likely a
derived type).
On Jul 21, 2009, at 2:55 AM, Prasadcse Perera wrote:
Hi,
Its C binding
Hi,
Its C bindings and if I clear the picture a bit more, what it does is
partitioning the original matrix in to a set of sub matrices to be processed
by the a other processes. And it seems that the only option left is to
bundle off in to a temp buffer before sending as you have suggested. It
would
Which language bindings?
For Fortran, consider pack or reshape. (I *think* whether array
sections are bundled off into temporary, contiguous storage is
implementation-dependent.)
Isn't it easier to broadcast the size first?
On Tue, 2009-07-21 at 11:53 +0530, Prasadcse Perera wrote:
> Hi all,
>
Hi all,
I'm writing an application which requires sending some variable size of sub
matrices to a set of processes by a lead process who holds the original
matrix. Here, the matrices are square matrices and the receiving process
doesn't know the size of the receiving matrix. In MPI_Bcast, I have
