Gus Correa, But it will include the time of computation which took place
before waitAll( ).
List-Post: users@lists.open-mpi.org
Date: Tue, 1 Feb 2011 10:09:03 +0400
From: Bibrak Qamar <bibr...@gmail.com>
Subject: [OMPI users] Calculate time spent on non blocking
communication?
To: us...@open-mpi.org
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<aanlktinewz_xyx88pgouojvogaf6ld8nwf_nchsy0...@mail.gmail.com>
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Hello All,
I am using non-blocking send and receive, and i want to calculate the time
it took for the communication. Is there any method or a way to do this using
openmpi.
Thanks
Bibrak Qamar
Undergraduate Student BIT-9
Member Center for High Performance Scientific Computing
NUST-School of Electrical Engineering and Computer Science.
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Message: 4
List-Post: users@lists.open-mpi.org
Date: Mon, 31 Jan 2011 22:14:53 -0800
From: Eugene Loh <eugene....@oracle.com>
Subject: Re: [OMPI users] Calculate time spent on non blocking
communication?
To: Open MPI Users <us...@open-mpi.org>
Message-ID: <4d47a4dd.5010...@oracle.com>
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Bibrak Qamar wrote:
> Hello All,
>
> I am using non-blocking send and receive, and i want to calculate the
> time it took for the communication. Is there any method or a way to do
> this using openmpi.
You probably have to start by defining what you mean by "the time it
took for the communication". Anyhow, the Peruse instrumentation in OMPI
might help.
------------------------------
Message: 5
List-Post: users@lists.open-mpi.org
Date: Tue, 1 Feb 2011 01:20:36 -0500
From: Gustavo Correa <g...@ldeo.columbia.edu>
Subject: Re: [OMPI users] Calculate time spent on non blocking
communication?
To: Open MPI Users <us...@open-mpi.org>
Message-ID: <8f16054c-6fca-4e65-9c83-5efbfcb18...@ldeo.columbia.edu
>
Content-Type: text/plain; charset=us-ascii
On Feb 1, 2011, at 1:09 AM, Bibrak Qamar wrote:
> Hello All,
>
> I am using non-blocking send and receive, and i want to calculate the time
it took for the communication. Is there any method or a way to do this using
openmpi.
>
> Thanks
> Bibrak Qamar
> Undergraduate Student BIT-9
> Member Center for High Performance Scientific Computing
> NUST-School of Electrical Engineering and Computer Science.
> _______________________________________________
About the same as with blocking communication, I guess.
Would this do work for you?
start=MPI_Wtime()
MPI_Isend(...)
...
MPI_Irecv(...)
...
MPI_Wait[all](...)
end=MPI_Wtime()
print *, 'walltime = ', end-start
My two cents,
Gus Correa
