[AG-TECH] beacon crashes all the time

[Ivan R. Judson]

I don't think you've lost your mind.  But that probably doesn't have to do
with the beacon :-).

I do think we need to figure out a more scalable solution for the beacon (if
only at the UI level, but perhaps deeper than that).

Is there anyone from the beacon group on ag-tech that can answer this?

--Ivan

> -----Original Message-----
> From: owner-ag-tech at mcs.anl.gov 
> [mailto:owner-ag-tech at mcs.anl.gov] On Behalf Of Bob Riddle
> Sent: Wednesday, April 02, 2003 9:56 PM
> To: ag-tech at mcs.anl.gov
> Subject: [AG-TECH] beacon crashes all the time
> 
> 
> I think there are too many beacons running for me to get the beacon 
> client running on my linux box.  I always see the following after I 
> start it up:
> 
> Beacon is running with :
>          localhost     = vrvs-ag.internet2.edu
>          group         = 233.2.171.1
>          port          = 56464
>          ttl           = 127
>          user          = beacon
>          beacon server = beaconserver.accessgrid.org:9997
> 
> java.lang.ArrayIndexOutOfBoundsException: 8192
>          at Report.createReportBuffer(Report.java:253)
>          at Report.run(Report.java:60)
> 
> 
> this seems similar to the problem reported in: 
> http://www-unix.mcs.anl.gov/web-mail-archive/lists/ag-tech/200
> 0/05/msg00002.html
> 
> I tried to change the "final static int maxReportPacketSize = 
> 8192; // 
> approximately enough for 80 beacons" in the Beacon.java file 
> to 16384 - 
> but I still get the same message.  For my final experiment, I strated 
> the beacon using the following shell script from nlanr:
> 
> #!/bin/sh
> #
> # Multicast Beacon startup script for non-AG beacons
> #
> multicast_group=233.4.200.18
> multicast_port=10100
> beacon_server=dast.nlanr.net
> server_port=9999
> time_to_live=127
> user_name=beacon
> 
> # this version runs under Java1.1 and Java1.2
> # compile the program using a stable java implementation on 
> your platform cd /usr/local/ag/apps/beacon_v0.63/beacon
> /usr/local/ag/jre1.2.2/bin/java  Beacon \
>          -group      $multicast_group \
>          -port       $multicast_port \
>          -server     $beacon_server \
>          -serverport $server_port \
>          -ttl        $time_to_live \
>          -name       $user_name
> 
> 
> it ran forever ... which makes me think I need to find some 
> way to make 
> the 8192 value in Beacon.java larger ... so how come when I 
> change it to 
> 16384 in Beacon.java it still reports 8192 in the error message?  Is 
> there any hope that I can fix this  (without convincing my friends to 
> quite running their beacons long enough for me to get mine 
> running ... 
> of course one of them will then be punished ...)
> 
> Have I lost my mind?
> 
> 
> 
> -- 
> Bob Riddle (bdr at internet2.edu)    Technologist,Internet2
> 3025 Boardwalk, Suite 100         Ann Arbor, Michigan  48108
> Business Phone: 734.913.4257      Fax Number:  734.913.4255
> 
> "Opportunity is missed by most people because it is dressed 
> in overalls 
> and looks like work" Thomas Edison
>