The error when executing the qrsh command

Explain the error when running qrsh.

1.Your "qrsh" request could not be scheduled, try again later.
The error above indicates that there are no available vacant resource for interactive job. 
Please retry it after the resource become available.

See "I'd like to check the congestion status of compute node" for the status of the use of compute node.

2.Job is rejected. You do NOT have enough point to finish this job
This error indicates that there is no TSUBAME points required for assuring the node.
Please check the point balance.

Reference: FAQ "How long will it take for TSUBAME points to be returned?*

3.Unable to run job: unable to send message to qmaster using port 6444 on host "jobconX": got send error.

This error occurs when the UGE server side is under heavy load.
Please wait a while and try again.