Newsgroups: comp.parallel.mpi
From: bobf@epcc.ed.ac.uk (Robert Fletcher)
Subject: Topologies and MPI_Comm_dup
Organization: Edinburgh Parallel Computing Centre
Date: Wed, 14 Sep 1994 14:45:16 GMT
Message-ID: <Cw4JnH.8CC@dcs.ed.ac.uk>

I would be grateful if anyone could cast any light on the following:


If MPI_Comm_dup is performed on a comm which has been
augmented with topology information, will the toplogy be
propagated to the new comm?

The MPI standard (as of May 5th) suggests that the addition of 
toplogy information is implemented using the caching mechanism, 
but (as far as I can see) does not specify the behaviour of 
the copy call-back function for topologies implemented in this way.


Cheers,
	Bob.

-- 
_________________________________________________________________________
 Robert Fletcher (bobf@epcc.ed.ac.uk) (+44 (0)31 650 6709)           e||p
 University of Edinburgh Parallel Computing Centre                   c||c


