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.
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.