.\" Man page contributed by Dirk Eddelbuettel <edd@debian.org>
.\" and released under the BSD license
.\" Copyright (c) 2008      Sun Microsystems, Inc.  All rights reserved.
.TH OMPI_INFO 1 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
.SH NAME
ompi_info - Display information about the Open MPI installation
.
.\" **************************
.\"    Synopsis Section
.\" **************************
.SH SYNOPSIS
.B ompi_info [options]
.
.\" **************************
.\"    Description Section
.\" **************************
.SH DESCRIPTION
.PP
.B ompi_info
provides detailed information about the Open MPI installation.  It can
be useful for at least three common scenarios:
.PP
1. Checking local configuration and seeing how Open MPI was installed.
.PP
2. Submitting bug reports / help requests to the Open MPI community
(see 
.IR http://www.open-mpi.org/community/help/ )
.PP
3. Seeing a list of installed Open MPI plugins and querying what 
MCA parameters they support.
.
.\" **************************
.\"    Options Section
.\" **************************
.SH OPTIONS
.B ompi_info
accepts the following options:
.TP 8
.I \-a|\-\-all 
Show all configuration options and MCA parameters
.TP 8
.I \-\-arch   
Show architecture Open MPI was compiled on
.TP 8
.I \-c|\-\-config
Show configuration options
.TP 8
.I \-gmca|\-\-gmca <param> <value>
Pass global MCA parameters that are applicable to all contexts.
.TP 8
.I \-h|\-\-help
Shows help / usage message
.TP 8
.I \-\-hostname
Show the hostname that Open MPI was configured and built on
.TP 8
.I \-\-internal
Show internal MCA parameters (not meant to be modified by users)
.TP 8
.I \-\-level
Show only variables with at most this level (1-9). The default is 1 unless
\-\-all is specified without \-\-level in which case the default is 9. See
the LEVEL section for more information.
.TP 8
.I \-mca|\-\-mca <param> <value>
Pass context-specific MCA parameters; they are considered global if --gmca is
not used and only one context is specified.
.TP 8
.I \-\-param <type> <component>
Show MCA parameters.  The first parameter is the type of the component
to display; the second parameter is the specific component to display
(or the keyword "all", meaning "display all components of this type").
.TP 8
.I \-\-parsable
When used in conjunction with other parameters, the output is
displayed in a machine-parsable format
.I \-\-parseable
Synonym for --parsable
.TP 8
.I \-\-path <type>
Show paths that Open MPI was configured with.  Accepts the following
parameters: prefix, bindir, libdir, incdir, pkglibdir, sysconfdir.
.TP 8
.I \-\-pretty
When used in conjunction with other parameters, the output is
displayed in 'prettyprint' format (default)
.TP 8
.I \-\-selected-only
Show only variables from selected components.
.TP 8
.I \-V|\-\-version
Show version of Open MPI.
.
.\" **************************
.\"    Levels Section
.\" **************************
.SH LEVELS
.TP 4
1
Basic information of interest to users
.
.TP
2
Detailed information of interest to users
.
.TP
3
All remaining information of interest to users
.
.TP
4
Basic information required for tuning
.
.TP
5
Detailed information required for tuning
.
.TP
6
All remaining information required for tuning
.
.TP
7
Basic information for MPI implementors
.
.TP
8
Detailed information for MPI implementors
.
.TP
9
All remaining information for MPI implementors
.
.\" **************************
.\"    Examples Section
.\" **************************
.SH EXAMPLES
.TP 4
ompi_info
Show the default output of options and listing of installed
components in a human-readable / prettyprint format.
.
.
.TP
ompi_info --parsable
Show the default output of options and listing of installed
components in a machine-parsable format.
.
.
.TP
ompi_info --param btl openib
Show the MCA parameters of the "openib" BTL component in a
human-readable / prettyprint format.
.
.
.TP
ompi_info --param btl openib --parsable
Show the MCA parameters of the "openib" BTL component in a
machine-parsable format.
.
.
.TP
ompi_info --path bindir
Show the "bindir" that Open MPI was configured with.
.
.
.TP
ompi_info --version ompi full --parsable
Show the full version numbers of Open MPI (including the ORTE and OPAL
version numbers) in a machine-readable format.
.
.
.TP
ompi_info --version btl major
Show the major version number of all BTL components in a prettyprint
format.
.
.
.TP
ompi_info --version btl:tcp minor
Show the minor version number of the TCP BTL component in a
prettyprint format.
.
.
.TP
ompi_info --all
Show 
.I all 
information about the Open MPI installation, including all components
that can be found, the MCA parameters that they support, versions of
Open MPI and the components, etc.
.
.
.\" **************************
.\"    Authors Section
.\" **************************
.SH AUTHORS
The Open MPI maintainers -- see 
.I http://www.openmpi.org/
or the file
.IR AUTHORS .
.PP
This manual page was originally contributed by Dirk Eddelbuettel
<edd@debian.org>, one of the Debian GNU/Linux maintainers for Open
MPI, and may be used by others.