[petsc-users] Nodes Communication - Petsc Vec

[Medane TCHAKOROM]

Re:

I forgot to mention that the nodes are in differents communicators. Does 
VecScatter functionnality still applies ?

Thanks.

On 16/02/2022 15:03, Matthew Knepley wrote:
> On Wed, Feb 16, 2022 at 8:55 AM Medane TCHAKOROM 
> <medane.tchakorom at univ-fcomte.fr> wrote:
>
>     Hello,
>
>     I want to pass a Petsc Vec from one node to another one. Is there any
>     Petsc method for doing this
>
>
> You likely want the VecScatter functionality. There is a discussion of 
> this in the manual: 
> https://petsc.org/main/docs/manual/vec/?highlight=vecscatter#sec-unstruct
>
>   Thanks,
>
>     Matt
>
>     or should I use MPI_Irecv and MPI_Isend for non-blocking
>     communication ?
>
>     When using MPI_Isend, can i send a Petsc Vec, or should I get the
>     array
>     from it, and then send it ?
>
>     Thanks
>
>
>
> -- 
> What most experimenters take for granted before they begin their 
> experiments is infinitely more interesting than any results to which 
> their experiments lead.
> -- Norbert Wiener
>
> https://www.cse.buffalo.edu/~knepley/ 
> <http://www.cse.buffalo.edu/~knepley/>
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