lamnodes - Resolve LAM node/CPU notation to Unix hostnames.

       The  lamnodes  command is used to resolve LAM node/CPU nomenclature to Unix hostnames.  It can be used to
       determine the current running configuration of the LAM/MPI run-time  environment,  and  generate  a  boot
       schema that can be used to launch LAM in the future.

       By  default,  lamnodes will print out the node number, default IP name, CPU count, and per-node flags for
       each node in the running LAM.  gethostbyaddr(3) is used to obtain default hostnames.  If gethostbyaddr(3)
       fails, the IP number is displayed instead.

       This command can be used by setup shell scripts (and the like) to determine information from a currently-
       running LAM universe.  For example, use lamnodes to resolve particular CPUs and/or nodes to specific unix
       hostnames.  In a batch environment, lamnodes can be used to determine which  CPUs  share  a  common  node
       (note that MPI_GET_PROCESSOR_NAME can be used for a similar effect in an MPI program).

       lamnodes also shows per-node flags.  Currently defined flags are:

       origin      The node where lamboot was executed.

       this_node   The node where lamnodes is running.

       no_schedule The node will not be used to run MPI and serial processes when N and C are used to mpirun and
                   lamexec.

       lamnodes N -n
           Display  IP  names  and  CPU  counts  for  all  nodes.   This output can be saved and later used with
           lamboot(1).

       lamnodes C -n -c
           Display the IP name of the nodes containing each CPU, and suppress the LAM node number and CPU count.
           This output can be saved and later used with lamboot(1).

       lamnodes - Resolve LAM node/CPU notation to Unix hostnames.

-c          Suppress printing the CPU count for each node.

       -h          Print the command help menu.

       -i          Print IP addresses (instead of IP names)

       -n          Suppress printing CPU count for each node

bhost(5), gethostbyaddr(3), lamboot(1)

LAM 7.1.4                                          July, 2007                                        LAMNODES(1)

       lamnodes [-chin] [where]