Hi Simon

Galton, Simon wrote:

(according lsof on the system running the license manager) seems to hold a socket open during the duration of the job.

We want to run a couple of hundred of these jobs on our cluster, but after job 126 the client can no longer connect to the license manager.

This seems to suggest somewhere that there is a 128 socket limit on the service. How is the license manager run? What does

        limit

or

        ulimit -a

tell you for the user that the license manager runs as? Any notes in system logs?

The server hosting the license manager is otherwise fine, and you can continue to perform network-based operations on and against it...

The vendor feels that they have not coded a specific limit; I'm wondering if it's file descriptors or somesuch. I raised the limit of FDs on the system to 65000+ and verified that the change took effect; no change to the applications behaviour. It's a c-based app, compiled with gcc on a Fedora Core 6 system, I believe.

Doesn't sound like an FD limit, but as a socket limit. Older inetd's had something like 20-40 connections per process. If you are serving this through xinetd or similar, you might be able to raise these limits.

Joe


Any thoughts?

Simon




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