FSTATE(1) LAM COMMANDS FSTATE(1)
fstate - Report information on LAM remote file daemon.
fstate [-ah] [-F <ndesc>] <nodes>
-a Report on active descriptors only.
-h Print the command help menu.
-F <ndesc> Report up to a limit of <ndesc> descriptors.
Most MPI users will probably not need to use the fstate command. This
command is only installed if LAM/MPI was configured with the --with-
The fstate command reports on open file descriptors maintained by the
remote file daemon. With no options, information is printed on all
open descriptors under the following headings:
FD the LAM descriptor handle, different than the client handle
or actual UNIX handle
FLAGS the open flags: R for read, W for write, A for active, L for
FLOW the total number of bytes transferred in both directions
CLIENT the node ID and process ID of the last client
NAME the file name
The file deamon is a UNIX process, and UNIX processes are limited in
the number of UNIX file descriptors (fd) that they can open at any one
time. Yet the number of LAM processes is essentially unlimited. LAM
descriptors are associated with each client’s open user descriptors,
and are used by LAM to identify the file. They are temporarily
assigned UNIX file descriptors. When this happens, the status of the
filed descriptor is active. Locked filed descriptors remain active
Report all filed descriptors, representing every open file in the
LAM 7.1.1 September, 2004 FSTATE(1)
Man(1) output converted with