openmpi

Brian Barrett af4e86c25f Update collectives selection logic to allow for multiple components to be used at nce (up to one unique collective module per collective function). Matches r15795:15921 of the tmp/bwb-coll-select branch This commit was SVN r15924. The following SVN revisions from the original message are invalid or inconsistent and therefore were not cross-referenced: r15795 r15921		2007-08-19 03:37:49 +00:00
..
dtrace	Some minor changes for clarity in README file.	2007-03-06 13:59:46 +00:00
connectivity_c.c	Add simple test that sends a message between all the ranks in the job.	2007-02-28 21:38:02 +00:00
hello_c.c	Update collectives selection logic to allow for multiple components to be	2007-08-19 03:37:49 +00:00
hello_cxx.cc	* need to include iostream as well as stdio.h when doing the tricks with	2006-10-16 14:20:31 +00:00
hello_f77.f	Something I've been working on with low bandwidth over the past	2006-07-13 21:03:36 +00:00
hello_f90.f90	Something I've been working on with low bandwidth over the past	2006-07-13 21:03:36 +00:00
Makefile	Add simple test that sends a message between all the ranks in the job.	2007-02-28 21:38:02 +00:00
Makefile.include	Add simple test that sends a message between all the ranks in the job.	2007-02-28 21:38:02 +00:00
README	* Replace "SUNW" with "OMPI" in `contrib/dist/solaris`.	2007-08-07 18:16:37 +00:00
ring_c.c	- Convert MPI_Init(NULL, NULL) to MPI_Init(&argc, &argv) because	2006-08-08 13:01:17 +00:00
ring_cxx.cc	* need to include iostream as well as stdio.h when doing the tricks with	2006-10-16 14:20:31 +00:00
ring_f77.f	A few more cleanups	2006-08-08 19:43:21 +00:00
ring_f90.f90	Arrgh - missing ":" in the output (to make it like the others).	2006-08-08 21:35:38 +00:00

README

Copyright (c) 2004-2006 The Trustees of Indiana University and Indiana
                        University Research and Technology
                        Corporation.  All rights reserved.
Copyright (c) 2006      Cisco Systems, Inc.  All rights reserved.
Copyright (c) 2007      Sun Microsystems, Inc.  All rights reserved.

The files in this directory are sample MPI applications provided both
as a trivial primer to MPI as well as simple tests to ensure that your
Open MPI installation is working properly.

If you are looking for a comprehensive MPI tutorial, these samples are
not enough.  An excellent MPI tutorial is available here:

        http://webct.ncsa.uiuc.edu:8900/public/MPI/

There are 2 MPI examples in this directory, each in four languages:

- Hello world
  C:   hello_c.c
  C++: hello_cxx.cc
  F77: hello_f77.f
  F90: hello_f90.f90

- Send a trivial message around in a ring
  C:   ring_c.c
  C++: ring_cxx.cc
  F77: ring_f77.f
  F90: ring_f90.f90

- Test the connectivity between all processes
  C:   connectivity_c.c

The Makefile in this directory will build as many of the examples as
you have language support (e.g., if you do not have F90 bindings
compiled as part of Open MPI, the F90 examples will be skipped).

The Makefile assumes that the wrapper compilers mpicc, mpic++, mpif77,
and mpif90 are in your path.

Although the Makefile is tailored for Open MPI (e.g., it checks the
"ompi_info" command to see if you have support for C++, F77, and F90),
all of the example programs are pure MPI, and therefore not specific
to Open MPI.  Hence, you can use a different MPI implementation to
complie and run these programs if you wish.

Make today an Open MPI day!