146 строки
5.1 KiB
TeX
146 строки
5.1 KiB
TeX
% -*- latex -*-
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%
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% Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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% University Research and Technology
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% Corporation. All rights reserved.
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% Copyright (c) 2004-2005 The University of Tennessee and The University
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% of Tennessee Research Foundation. All rights
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% reserved.
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% Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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% University of Stuttgart. All rights reserved.
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% Copyright (c) 2004-2005 The Regents of the University of California.
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% All rights reserved.
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% $COPYRIGHT$
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%
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% Additional copyrights may follow
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%
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% $HEADER$
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%
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\chapter{Release Notes}
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\label{sec:release-notes}
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\index{release notes|(}
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This chapter contains release notes as they pertain to the run-time
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operation of Open MPI. The Installation Guide contains additional
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release notes on the configuration, compilation, and installation of
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Open MPI.
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\section{Alpha Release}
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Greetings!
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The Open MPI development team is pleased to announce an alpha-quality
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release of the current state of our software to a limited set of
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"friends" -- those who are knowledgeable about MPI and can provide
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intelligent feedback to us before a public release. Our intent with
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this release is to get the Open MPI software onto other people's
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machines and see what creative ways you can come up with to break it,
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and to send us your comments and suggestions.
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However, we want to stress the following points:
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\begin{itemize}
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\item This is an {\em alpha} quality release. We're quite aware that
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there are several things still broken (but report them anyway!).
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\item Most notably, if you run basic performance testing, you'll
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notice that, for example, the GM numbers are still a microsecond or
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two too high (we've been concentrating on functionality for the last
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month -- performance tuning is coming shortly).
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\item Since the competition in the HPC community is rather fierce,
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please do not redistribute this software without our permission.
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Also, please do not publish any results (good or bad) because, as
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mentioned above, this is pre-release software and we still have
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performance tuning to do.
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\end{itemize}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Release Frequency / Updates}
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You have probably downloaded this tarball from
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\url{http://www.open-mpi.org/nightly/}. This directory is updated at
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least once a day around 2am US/Indiana time (assuming that there is
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new code to release). It may be updated more frequently if a critical
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bug fix is reported and fixed.
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The best way to report bugs, send comments, or ask questions is to
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sign up on the \url{mailto:devel@open-mpi.org} mailing list:
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\centerline{\url{http://www.open-mpi.org/mailman/listinfo.cgi/devel}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Known Issues}
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This tarball is an alpha release of Open MPI. It is not yet complete,
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mainly in the following areas:
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\begin{itemize}
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\item Support for Infiniband (both verbs and OpenIB) is missing
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\item Support for Quadrics is missing
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\item Support for Myrinet needs performance tuning
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\item Support for MX needs performance tuning
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\item Support for TCP needs performance tuning
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\item Support for shared memory is not fully debugged
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If this becomes a problem during your testing, run the following:
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\lstset{style=ompi-cmdline}
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\begin{lstlisting}
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shell$ rm -f <prefix>/lib/openmpi/*sm*
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\end{lstlisting}
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% Stupid emacs mode: $
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where \cmdarg{<prefix>} is the directory where you installed Open
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MPI.
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\item Striping MPI messages across multiple networks is supported (and
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happens automatically when multiple networks are available), but
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needs performance tuning
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\item The only run-time systems supported are:
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\begin{itemize}
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\item \cmd{rsh} / \cmd{ssh}
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\item BProc of the flavor that is used at Los Alamos National Labs (in
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particular, it must be used with the BJS scheduler)
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\end{itemize}
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\item TotalView and other parallel debugger support is missing.
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\item Complete user and system administrator documentation is missing
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(this file comprises the majority of the current user documentation)
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\item The only systems that have been tested on are:
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\begin{itemize}
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\item Linux, 32 bit, with \cmd{gcc}
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\end{itemize}
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\item Other systems have been lightly (but not fully tested):
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\begin{itemize}
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\item Linux, 64 bit, with \cmd{gcc}
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\item OS X (10.3), 32 bit, with \cmd{gcc}
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\end{itemize}
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\item Missing MPI functionality:
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\begin{itemize}
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\item The Fortran 90 MPI API is disabled (it is not complete).
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\item MPI-2 dynamic functionality is temporarily broken.
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\item MPI-2 one-sided functionality will not be included in the
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first few releases of Open MPI
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\end{itemize}
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\item After running MPI applications, the directory
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\file{/tmp/openmpi-sessions-<username>@<hostname>*} will exist (but
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will likely be empty). It is safe to remove.
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\end{itemize}
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\index{release notes|)}
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