From: kielmann@cs.vu.nl (Thilo Kielmann)
Newsgroups: comp.parallel
Subject: MagPIe 2.0: MPI's collective operations for wide area systems
Date: 8 Jul 1999 23:34:03 GMT
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Approved: bigrigg@cs.cmu.edu
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Originator: bigrigg@ux6.sp.cs.cmu.edu
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This is to announce the availability of release 2.0 of MagPIe, a
library of MPI's collective communication operations, optimized for
use with wide area systems.

Applications just have to be linked with MagPIe and with your
favourite MPI implementation; changes to application source are not
necessary for using MagPIe. However, it is required that you implement
two functions that tell MagPIe how many clusters your wide area system
has and which MPI process is located in which cluster.

MagPIe assumes wide area systems to be composed of several clusters
(e.g. dedicated supercomputers or workstation clusters) which are
connected by wide area links.

Runtime improvements compared to MPICH 1.1 are substantial. Exact
numbers depend on how many clusters there are and on latency and
bandwidth of the wide-area links.

New features of MagPIe 2.0:

- independent of MPICH, now works with any MPI implementation via the
  profiling interface

- functionality thoroughly tested with the MPI 1.1 validation suite

- comes with several cluster configuration implementations
  one of them can read config files
 

MagPIe is part of the Albatross project on wide area cluster
computing. You can find papers describing MagPIe as well as its source
code on our project WWW page:

http://www.cs.vu.nl/albatross/


Your comments are very welcome!
-- 
Dr. Thilo Kielmann
Dept. of Mathematics and Computer Science, Vrije Universiteit
De Boelelaan 1081a, 1081 HV Amsterdam, The Netherlands
Phone:  +31 20 44 47789                                                /\,/\
Fax:    +31 20 44 47653                                               / u u \
E-Mail: Thilo.Kielmann@acm.org                                        \<_Y_>/
WWW:    http://www.cs.vu.nl/~kielmann/                                /  "  \

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