[AG-TECH] AG3 Bridge issue

John I. Quebedeaux, Jr johnq at lsu.edu
Thu Apr 26 11:22:13 CDT 2007

I seem to have the same problem but haven't had time to troubleshoot.... FC5

-John Q.
John I. Quebedeaux, Jr.; Louisiana State University
Computer Manager LBRN; 131 Life Sciences Bldg.
e-mail: johnq at lsu.edu; web: http://lbrn.lsu.edu
phone: 225-578-0062 / fax: 225-578-2597

> From: Fred Dech <fdech at uchicago.edu>
> Date: Thu, 26 Apr 2007 10:35:38 -0500
> To: AG TECH <ag-tech at mcs.anl.gov>
> Subject: [AG-TECH] AG3 Bridge issue
> Hi.
> I've been running a bridge on and off for some time and still run into
> the same annoying issue.  After the Bridge process runs for some period of
> time and the amount of activity (Quickbridge processes spawned and destroyed)
> goes past a certain point, the Bridge stops functioning properly.  It no
> longer identifies itself to the registry and no new entries are added
> to the log file.  I've tried different FC5 and FC6 platforms, assuming that
> this problem was machine specific, but this behavior has not changed.  I
> also tried running Bridge as root, thinking that I was running into some kind
> of restricted buffer limit.  No difference.
> The last thing normally logged is some attempts to create new bridges:
> 04/25/07 14:26:31 -1208707392 Toolkit     Bridge:57 INFO  Bridge request:
> mcast 59822
> 04/25/07 14:26:31 -1208707392 Toolkit     BridgeFactory.py:110 INFO  Method
> CreateBridge called
> 04/25/07 14:26:31 -1208707392 Toolkit     BridgeFactory.py:116 INFO  Allocated
> port = 50076
> 04/25/07 14:26:31 -1208707392 Toolkit     BridgeFactory.py:123 INFO  - using
> existing bridge
> and the BridgeFactory uses an existing bridge.
> Then the last item in the log is usually the destruction of all the bridges.
> After that the Bridge might as well not be running, because it doesn't show
> up in the registry.
> The only think to do at this point is to kill and restart the bridge.
> Does this sound familiar to anyone?
> I'd appreciate any comments or suggestions.
> Thanks.
> --fred

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