Warning issued on task startup
This typically happens, if the frontend or head node is included as compute node and also acts as gateway for the compute nodes. The "external" address of the frontend is not known to the compute nodes.
Use the PSP_NETWORK environment variable to
6.7. Warning issued on task startup
While starting up a parallel task, the message
execClient: chdir(/usr/tmp/username/./.): No such file or \ directory
Will use user's home directory
is displayed.
The current directory /usr/tmp/username does not exist on one or more of the remote nodes. The user's home directory, defined by the environment variable HOME will be used instead.
Make sure that the directory /usr/tmp/username is accessible on each node or change your current directory to a globally accessible directory.
6.8. Problem: pssh fails
Problem: users other than root cannot run commands on remote nodes using the pssh command.
$ pssh
PSI: dospawn: spawn to node 0 failed: Permission denied
By default, only root may spawn processes which are not consuming CPUs. The command pssh uses this way to run a process on a remote node.
To allow other users to spawn this type of processes, add the user or group to the adminuser or admingroup list within ParaStation using the command
psiadmin> set adminuser +username psiadmin> set admingroup +group
or add appropriate adminuser and/or admingroup entries to the ParaStation configuration file parastation.conf.
6.9. Problem: psid does not startup, reports port in use
Problem: the psid terminates after startup reporting that the port 886 is in use.
By default, the psid uses the port 886 (UDP) for the RDP protocol
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