OK, then i think you also know using MPI_Wait to wait the asynchronous
requests to complete. if sender works faster then receiver(or reverse), then
the MPI_Wait will do wait, not just deallocted. you should keep the buffer
content before MPI_Wait.
Changsheng Jiang
On Mon, Jun 28, 2010 at 11:41, Jack Bryan <dtustud...@hotmail.com> wrote:
> thanks
>
> I know this.
>
> but, what if sender can send a lot of messages to receivers faster than
> what receiver can receive ?
>
> it means that sender works faster than receiver.
>
> Any help is appreciated.
>
> jack
>
>
> ------------------------------
> From: jiangzuo...@gmail.com
> Date: Mon, 28 Jun 2010 11:31:16 +0800
> To: us...@open-mpi.org
> Subject: Re: [OMPI users] openMPI asychronous communication
>
>
> MPI_Isend - Starts a standard-mode, nonblocking send.
>
> BTW, are there any asynchronous collective operations?
>
> Changsheng Jiang
>
>
> On Mon, Jun 28, 2010 at 11:22, Jack Bryan <dtustud...@hotmail.com> wrote:
>
> Dear All:
>
> How to do asychronous communication among nodes by openMPI or boot.MPI in
> cluster ?
>
> I need to set up a kind of asychronous communication protocol such that
> message senders and receivers can communicate asychronously without losing
> any
> messages between them.
>
> I do not want to use blocking MPI routines because the processors can do
> other
> operations when they wait for new messages coming.
>
> I donot find this kind of MPI routines that support this
> asychronous communication.
>
> Any help is appreciated.
>
> thanks
>
> Jack
>
> June 27 2010
>
> ------------------------------
> The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with
> Hotmail. Get
> busy.<http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_5>
>
> _______________________________________________
> users mailing list
> us...@open-mpi.org
> http://www.open-mpi.org/mailman/listinfo.cgi/users
>
>
>
> ------------------------------
> The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with
> Hotmail. Get
> busy.<http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_5>
>
> _______________________________________________
> users mailing list
> us...@open-mpi.org
> http://www.open-mpi.org/mailman/listinfo.cgi/users
>
