barrierd
—
syncronize a process on a number of machines.
The
barrierd
daemon runs on a host, and
accepts barrier connections from the client program barrier. It handles the
connections and syncronization of various barriers being set up and taken down
across the cluster.
-v
- Prints the version of ClusterIt to the stdout, and exits.
-p
- Specifies a port number for the
barrierd
daemon to listen on. Defaults
to 1933, and overrides the BARRIER_PORT
environment variable.
barrierd
utilizes the following environment
variables:
BARRIER_PORT
- Sets the default remote port to connect to.
Exit status is 0 on success, 1 if an error occurs.
barrier(1),
dsh(1),
The
barrierd
command appeared in clusterit
1.1.
Barrierd
was written by Tim Rightnour.
Barrierd
can only handle up to 10 unique
barrier tokens at any one time. In addition, it can only handle a barrier size
of up to 512 nodes. These values can be modified by recompiling the
program.