[Mpi-forum] Integrating parallel and serial code

[Michael Morrison]

Sorry, my mistake. Is there a user question list that you could direct me
to, where i'd be able to ask questions like this? I've already begun with a
few tutorials. I've been working with "Parallel Programming with MPI" by
Peter Pacheco and also have begun browsing official MPI-2.2 Standard which I
order from HLRS. None of the material I've seen covers the scenario I
described though. Apologies again, I won't post further questions here.

Mike

On Mon, Jul 12, 2010 at 2:21 PM, Richard Treumann <treumann at us.ibm.com>wrote:

>
> This reflector is for discussion of the MPI Standard. The Forum is working
> on extending the standard and this is part of how we communicate. It is not
> a user question list.
>
> The simple answer is that MPI execute several distinct copies of a program
> and provides the tools to let the program author break up the work over
> these several copies. The program author breaks up the work into many pieces
> and uses MPI to move data among the several pieces.
>
> There are many MPI Tutorial on the Web and you should probably begin there.
>
>
> Dick Treumann  -  MPI Team
> IBM Systems & Technology Group
> Dept X2ZA / MS P963 -- 2455 South Road -- Poughkeepsie, NY 12601
> Tele (845) 433-7846         Fax (845) 433-8363
>
>
>
>  From: Michael Morrison <mwmorrison93 at gmail.com> To:
> mpi-forum at lists.mpi-forum.org Date: 07/12/2010 05:06 PM Subject: [Mpi-forum]
> Integrating parallel and serial code Sent by:
> mpi-forum-bounces at lists.mpi-forum.org
> ------------------------------
>
>
>
> Hi All, I'm extremely new to MPI so forgive me if my question comes off as
> silly. I've only been dabbling around with parallel computing for a few
> weeks now but I'm wondering about the possibilities. So far with each
> example that I've been through, I create an MPI application and then run
> this application using the mpiexec command. What I'm wondering about is if
> it would be possible to say have a C function that executes some algorithm
> in a parallel manner that could be called by another C function. For example
> suppose i had two C functions, the first called function A and the second
> called function B. Function A is just a normal function that runs serially,
> function B executes its algorithm parallelly using MPI constucts. Is it
> possible to have a set up like this?
>
> >From the examples I've seen it appears that the MPI code runs as
> standalone units and couldn't be integrated with  serially executing code.
> Is this true or is there someway to make this set up work? I may not have
> given enough information to answer the question, if there's any confusion
> please ask and i'll clarify.
>
> Thanks for your time,
>
> Mike_______________________________________________
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