102 строки
3.4 KiB
Plaintext
102 строки
3.4 KiB
Plaintext
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 (c) 2008-2015 Cisco Systems, Inc. All rights reserved.
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$COPYRIGHT$
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Additional copyrights may follow
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$HEADER$
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For More Information
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====================
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This file is a *very* short overview of building and installing Open
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MPI, and building MPI applications. Much more information is
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available on the Open MPI web site (e.g., see the FAQ section):
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http://www.open-mpi.org/
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Developer Builds
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================
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If you have checked out a DEVELOPER'S COPY of Open MPI (i.e., you
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cloned from Git), you should read the HACKING file before attempting
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to build Open MPI. You must then run:
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shell$ ./autogen.pl
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You will need very recent versions of GNU Autoconf, Automake, and
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Libtool. If autogen.pl fails, read the HACKING file. If anything
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else fails, read the HACKING file. Finally, we suggest reading the
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HACKING file.
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*** NOTE: Developer's copies of Open MPI typically include a large
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performance penalty at run-time because of extra debugging overhead.
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User Builds
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===========
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Building Open MPI is typically a combination of running "configure"
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and "make". Execute the following commands to install the Open MPI
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system from within the directory at the top of the tree:
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shell$ ./configure --prefix=/where/to/install
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[...lots of output...]
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shell$ make all install
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If you need special access to install, then you can execute "make
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all" as a user with write permissions in the build tree, and a
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separate "make install" as a user with write permissions to the
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install tree.
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Compiling support for various networks or other specific hardware may
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require additional command ling flags when running configure. See the
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README file for more details. Note that VPATH builds are fully
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supported. For example:
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shell$ tar xf openmpi-X.Y.Z.tar.gz
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shell$ cd openmpi-X.Y.Z
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shell$ mkdir build
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shell$ cd build
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shell$ ../configure ...your options...
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[...lots of output...]
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shell$ make all install
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Parallel builds are also supported (although some versions of "make",
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such as GNU make, will only use the first target listed on the command
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line when executable parallel builds). For example (assume GNU make):
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shell$ make -j 4 all
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[...lots of output...]
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shell$ make install
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Parallel make is generally only helpful in the build phase (i.e.,
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"make all"); the installation process (i.e., "make install") is mostly
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serial and does not benefit much from parallelization.
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Compiling MPI Applications
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==========================
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MPI applications should be compiled using the Open MPI "wrapper"
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compilers:
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C programs: mpicc your-code.c
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C++ programs: mpiCC your-code.cc or
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mpic++ your-code.cc (for case-insensitive filesystems)
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Fortran programs: mpifort your-code.f90
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These compilers simply add various command line flags (such as -lmpi)
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and invoke a back-end compiler; they are not compilers in themselves.
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