First, to minimize ambiguity, it may make sense to distinguish
explicitly between two buffers: the send buffer (specified in the
MPI_Send or MPI_Bsend call) and the attached buffer (specified in some
MPI_Buffer_attach call).
Jovana Knezevic wrote:
On the other hand, a slight confusion when
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Treumann
Sent: Thursday, May 06, 2010 10:49 AM
To: Open MPI Users
Subject: Re: [OMPI users] MPI_Bsend vs. MPI_Ibsend
An MPI send (of any kind), is defined by "local completion semantics". When a
send is complete, the send buffer may be reused. The only kind of send that
gives any indicati
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Actually the 'B' in MPI_Bsend() specifies that it is a blocking *buffered*
send. So if I remember my standards correctly, this call requires:
1) you will have to explicitly manage the send buffers via
MPI_Buffer_[attach|detach](), and
2) the send will block until a corresponding receive is pos
