thanks
I know that.
MPI_irecv() ;
do other works;
MPI_wait();
But, my message receiver is much slower than sender.
when the sender is doing its local works, the sender has sent out their
messages. but at this time, the sender is very busy doing its local work and
cannot post MPI_irecv to get the messages from senders.
Any help is appreciated.
jack
From: jiangzuo...@gmail.com
List-Post: users@lists.open-mpi.org
Date: Mon, 28 Jun 2010 11:55:32 +0800
To: us...@open-mpi.org
Subject: Re: [OMPI users] openMPI asychronous communication
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
List-Post: users@lists.open-mpi.org
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 anymessages
between them.
I do not want to use blocking MPI routines because the processors can do
otheroperations 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
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