Newsgroups: comp.parallel.mpi
From: premutic@I_should_put_my_domain_in_etc_NNTP_INEWS_DOMAIN (Giordano Premutico)
Subject: Q: Virtual Topologies in MPICH implemntn.
Summary: Asking about "good" embedding of virtual topologies
Organization: University of Rome "Tor Vergata"
Date: 6 Mar 1996 12:18:21 GMT
Message-ID: <4hjvqd$l7c@copernico.utovrm.it>

Hello!
We are a group of students of the 2nd University Of Rome "Tor Vergata". We
are attending at a course of SuperComputing and we are working on the porting
of the PLUS environment on MPI message - passing interface. We are concerned
about mapping of virtual topologies on the physical network: does anyobdy
know if the MPICH implementation can remap the process ranks in order to get
a "good" embedding of the virtual topology? MPI standard does not request
this, and such a remapping is left to the implementors, just if they want . 
The manuals do not help us, providing few details on how the implementation
is done.

Thanks in advance for attention,

G. Premutico (premutic@info.utovrm.it)
G. Merola (merola@info.utovrm.it)
F. Petriconi (petricon@info.utvorm.it)
P. Maceroni (maceroni@info.utovrm.it)

