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    Command:

    lamwipe

    
    
    

    SYNTAX

           lamwipe   [-b]   [-d]   [-h]   [-v]   [-nn]  [-np]  [-n  <#>]  [-prefix
                  </lam/install/path>]       [-prefix        </lam/install/path/>]
                  [-sessionprefix      <value>]      [-sessionsuffix      <value>]
                  [-withlamprefixpath <value>] [-ssi <key> <value>] [<bhost>]
    
    
    

    OPTIONS

           -b          Assume local and remote shell are  the  same.   This  means
                       that only one remote shell invocation is used to each node.
                       If -b is not used, two remote shell invocations are used to
                       each node.
    
           -d          Turn on debugging mode.  This implies -v.
    
           -h          Print the command help menu.
    
           -n <#>      Lamwipe only the first <#> nodes.
    
           -prefix     Use the LAM installation specified in </lam/install/path/>
    
           -ssi <key> <value>
                       Send  arguments to various SSI modules.  See the "SSI" sec-
                       tion, below.
    
           -v          Be verbose.
    
           -nn         Don't add "-n" to the remote agent command line
    
           -np         Do not force the  execution  of  $HOME/.profile  on  remote
                       hosts
    
           -session-prefix <value>
                       Set  the session prefix, overriding LAM_MPI_SESSION_PREFIX.
    
           -session-suffix <value>
                       Set the session suffix, overriding  LAM_MPI_SESSION_SUFFIX.
    
           -withlamprefixpath <value>
                       Override  the internal installation path.  For internal use
                       only, do not use unless you know what you are doing.
    
    
    

    DESCRIPTION

           This command has been deprecated  in  favor  of  the  lamhalt  command.
           lamwipe  should  only  be  necessary  if lamhalt fails and is unable to
           clean up the LAM run-time environment properly.  The lamwipe tool  ter-
           minates  the LAM software on each of the machines specified in the boot
           schema, <bhost>.  lamwipe is the topology tool that terminates  LAM  on
           the  UNIX(tm)  nodes of a multicomputer system.  It invokes tkill(1) on
           each machine.  See tkill(1) for a description of how LAM is  terminated
           on each node.
    
           The  <bhost> file is a LAM boot schema written in the host file syntax.
           is given.  This is mainly intended for use by lamboot(1), which invokes
           lamwipe when a boot does not successfully complete.
    
       SSI (System Services Interface)
           The  -ssi  switch  allows the passing of parameters to various SSI mod-
           ules.  LAM's SSI modules are described in  detail  in  lamssi(7).   SSI
           modules  have  direct impact on MPI programs because they allow tunable
           parameters to be set at run time (such as which boot device  driver  to
           use, what parameters to pass to that driver, etc.).
    
           The  -ssi switch takes two arguments: <key> and <value>.  The <key> ar-
           gument generally specifies which SSI module  will  receive  the  value.
           For  example,  the  <key> "boot" is used to select which RPI to be used
           for starting processes on remote nodes.  The <value>  argument  is  the
           value that is passed.  For example:
    
           lamboot -ssi boot tm
               Tells  LAM  to use the "tm" boot module for native launching in PB-
               SPro / OpenPBS environments (the tm boot module does not require  a
               boot schema).
    
           lamboot -ssi boot rsh -ssi rsh_agent "ssh -x" boot_file
               Tells LAM to use the "rsh" boot module, and tells the rsh module to
               use "ssh -x" as the specific agent to launch executables on  remote
               nodes.
    
           And so on.  LAM's boot SSI modules are described in lamssi_boot(7).
    
           The  -ssi  switch can be used multiple times to specify different <key>
           and/or <value> arguments.  If the same <key>  is  specified  more  than
           once, the <value>s are concatenated with a comma (",") separating them.
    
           Note that the -ssi switch is simply a shortcut for setting  environment
           variables.   The same effect may be accomplished by setting correspond-
           ing environment variables before running lamwipe.  The form of the  en-
           vironment variables that LAM sets are: LAM_MPI_SSI_<key>=<value>.
    
           Note  that  the  -ssi  switch  overrides any previously set environment
           variables.  Also note that unknown <key> arguments are still set as en-
           vironment  variable  --  they are not checked (by lamwipe) for correct-
           ness.  Illegal or incorrect <value> arguments may or may not be report-
           ed -- it depends on the specific SSI module.
    
       Remote Executable Invocation
           All  tweakable  aspects of launching executables on remote nodes during
           lamwipe are discussed in lamssi(7) and lamssi_boot(7).  Topics  include
           (but are not limited to): discovery of remote shell, run-time overrides
           of the agent use to launch remote executables (e.g., rsh and ssh), etc.
    
    
    

    EXAMPLES

           lamwipe -v mynodes
               Shutdown LAM on the machines described in the boot schema, mynodes.
    
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