Open MPI User's Mailing List Archives

Subject: Re: [OMPI users] Does MPI_Bsend always use the buffer?
From: Bradley, Peter C. (MIS/CFD) (peter.c.bradley_at_[hidden])
Date: 2007-12-11 11:10:02

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• Maybe in reply to: Bradley, Peter C. (MIS/CFD): "[OMPI users] Does MPI_Bsend always use the buffer?"

>This is an implementation details. You should avoid relying on such
>things in a portable MPI applications. The safe assumption here is
>that MPI_Bsend always copy the buffer, as described in the MPI standard.

I'm fully aware of the MPI standard, and the program will be
standard-compliant. However, since performance is somewhat important even
in this emulated mode I want to understand what the OpenMPI implementation
is likely to do.

Pete

• Next message: Aurelien Bouteiller: "Re: [OMPI users] error with Vprotocol pessimist"
• Previous message: George Bosilca: "Re: [OMPI users] Does MPI_Bsend always use the buffer?"
• Maybe in reply to: Bradley, Peter C. (MIS/CFD): "[OMPI users] Does MPI_Bsend always use the buffer?"