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Also, please do not publish any results (good or bad) because, as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