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  • LINUX man pages
  • Linux Man Page Viewer


    The following form allows you to view linux man pages.

    Command:

    lam-helpfile

    
    
    

    DESCRIPTION

           The  lam-helpfile  provides detailed error messages and suggestions for
           help on how to fix common problems.  In many places  in  LAM,  when  an
           error occurs, this help file is consulted to display a detailed message
           of what the error was and, when possible, suggestions on how to fix the
           problem.  It consists of much of the information from the LAM FAQ (par-
           ticularly in dealing with getting LAM up and running)
    
           At present, the following LAM tools use this help file (it is  expected
           that  more will use it in future releases.  If you have suggestions for
           locations where more detailed error messages would be  helpful,  please
           let us know):
    
           hboot
           lamboot
           lamexec
           lamhalt
           lamnodes
           lamwipe
           mpicc (hcc)
           mpiCC (hcp)
           mpif77 (hf77)
           mpirun
           recon
           tkill
           tping
    
    
    

    STRUCTURE AND SYNTAX

           The  help file is multiple blocks of help text separated by single line
           delimiters.  The delimiter lines are of the format:
    
           -*-programname:topicname-*-
    
           Where programname is the general name of the program (or group of  pro-
           grams) that this help message applies to, and topicname is the specific
           topic that this message applies two.
    
           The special keyword ALL can be used for either the programname  or  the
           topicname in some cases; this is usually a "wildcard" value where  lit-
           tle specific information is available.
    
           Within the block of the message,  lines  that  begin  with  a  "#"  are
           treated as comments; they are not printed out.
    
           Three special escape sequences can be used within the help message:
    
           %N     Where  N  is a number from 1 to the number of arguments that the
                  help message is invoked with.  The "%N" string is replaced  with
                  the value of the Nth argument from the argument list.  The argu-
                  ments are passed from the LAM binaries themselves;  they  cannot
                  be  edited.   The  comments in the default LAM help file explain
                  how many arguments each message is invoked with, and  what  each
    
           When LAM attempts to print an error message  from  the  help  file,  it
           looks for the help file in the following locations (in order):
    
           $HOME/lam-helpfile
           $HOME/lam-7.1.2-helpfile
           $HOME/etc/lam-helpfile
           $HOME/etc/lam-7.1.2-helpfile
           $LAMHELPDIR/lam-helpfile
           $LAMHELPDIR/lam-7.1.2-helpfile
           $LAMHOME/etc/lam-helpfile
           $LAMHOME/etc/lam-7.1.2-helpfile
           $TROLLIUSHOME/etc/lam-helpfile
           $TROLLIUSHOME/etc/lam-7.1.2-helpfile
           $SYSCONFDIR/lam-helpfile
           $SYSCONFDIR/lam-7.1.2-helpfile
    
           Note  the  variable  $LAMHELPDIR; this variable can be set according to
           platform, for example, to provide  operating  system-specific  informa-
           tion,  or  information  specific to particular groups of machines, etc.
           It can also be set to provide help messages in different languages.
    
           $SYSCONFIDIR is typically $prefix/etc, where $prefix is the location to
           where LAM was installed; it was the option supplied to ./configure when
           LAM was built (or /usr/local/lam-7.1.2,  by  default).   However,  note
           that  the value of $SYSCONFDIR can be overridden when LAM is configured
           with the --sysconfdir switch.
    
    
    

    EXAMPLES

           The following is an example customization of the help for the hboot and
           lamboot  programs,  when the user supplies a host file name that is not
           found.
    
           -*-boot:open-hostfile-*-
           %1 could not open the hostfile "%2" for the following reason:
    
                       %perror
           Things to check:
    
                       - ensure that the file exists
                         try "ls -l %2"
                       - ensure that you have read permissions on the file
                         try "cat %2"
    
           You may not need to specify a host file at all; the system
           administrators have defined the all of Beowulf cluster host names in
           the LAM default host name list.  If you wish to use all of the Beowulf
           nodes, simply execute:
    
                       %1 -v
    
           If you have any problems with LAM, please send mail to:
    
    
    
    

    LAM 7.1.2 March, 2006 LAM-HELPFILE(5)

    
    
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