Re: [Boost-users] mpi: sending/receiving different types

Subject: Re: [Boost-users] mpi: sending/receiving different types
From: Hicham Mouline (hicham_at_[hidden])
Date: 2010-12-06 12:01:54

>The way we do this is send a special message saying that a broadcast 
>will be sent next. 
>  Brian 
>
>probe() checks only for messages sent by send(), not by broadcast(). 
>Matthias 

Thanks,

I spend most of my time broadcasting, and sometimes sending.... I guess that means in the slave processes:
. use mpi::broadcast()
. if the received value is a signal that a send() to me will be issued next, then I'll recv()

About the broadcast() function, I obviously have many types of messages to send, would you rather:

1. send a broadcast with just an int (like a tag) to tell which broadcast is following next

or

2. construct a virtual base class my_mpi_broadcast , derive all the sendable broadcasts from it, from sender, send actual instance of derived from my_mpi_broadcast, and at receiver, can the mechanism reconstruct for me the derived class? (with boost::serialization)

Is 2 doable at all? If so, pros/cons

regards,