[mpich-discuss] Integrating parallel and serial code

[Michael Morrison]

Hi All, I hope i'm posting this in the correct forum. 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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