trying to use logical or and i must be missing something Post: 302590791

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lamgrow

LAMGROW(1)                                                         LAM COMMANDS                                                         LAMGROW(1)

NAME

       lamgrow - Extend a LAM multicomputer.

SYNOPSIS

       lamgrow [-hvd] [-cpu num] [-n nodeid] [-no-schedule] [-ssi key value] hostname

OPTIONS

       -cpu num      Indicate how many CPUs are available to LAM on the new node.

       -d            Turn on debugging output.  This implies -v.

       -h            Print useful information on this command.

       -n nodeid     Assign this ID to the new node.

       -no-schedule  Indicate that C and N expansion in mpirun and lamexec should not schedule on this node.

       -ssi key value
                     Send arguments to various SSI modules.  See the "SSI" section, below.

       -v            Be verbose.

       hostname      Extend LAM with this host.

DESCRIPTION

       An  existing LAM universe, initiated by lamboot(1), can be enlarged to include more nodes with lamgrow.  One new node is added for each in-
       vocation.  At a minimum, the host name that will run the new node is given on the command line.  If a different userid is required  to  ac-
       cess the host, it is specified with the appropriate boot SSI options (see lamssi_boot(7)).

       The  new  node can be assigned any unused, non-negative identifier.  If no identifier is specified, the highest node identifier in the cur-
       rent LAM universe plus one is used.  Note that lamboot(1) always assigns node identifiers consecutively from 0.

       lamgrow can be run from any node in the current LAM universe.  Specifically -- it cannot be run from the intended new  host.   Two  invoca-
       tions  of lamgrow should not run concurrently, and the command attempts to detect this situation. The name of the host specified in lamgrow
       should not be the one which is already present in the user's LAM universe and the command attempts to detect this situation too.

       Resource managers will be the most common user of lamgrow.  When hosts become idle and a user has expressed a desire to  the  manager  that
       extra cycles should be exploited, the manager could invoke lamgrow and then launch the specified application process(es) on the new node.

EXAMPLES

       lamgrow -v newhost
           Start  LAM  on  newhost  and add it to the existing LAM universe.  Choose the next available node identifier and report about important
           steps as they are done.

       lamgrow -n 30 newhost
           Start LAM on newhost with node ID 30 and add it to the existing LAM universe.  Operate silently.

FILES

       laminstalldir/etc/lam-conf.lamd   default configuration file for LAM nodes, where "laminstalldir" is the directory where  LAM/MPI  was  in-
                                         stalled.

BUGS

       It is not currently possible to specify a configuration file other than lam-conf.lamd on the remote node, even though this is possible with
       lamboot.

SEE ALSO

       lamboot(1), lamhalt(1), hboot(1), lamwipe(1), tkill(1), bhost(5), conf(5), lamssi_boot(7)

LAM 7.1.4                                                           July, 2007                                                          LAMGROW(1)