JESS: ORF 2009 Jess Boot Camp
Greetings: [With Permission] October Rules Fest is honored to once again have Jason Morris as one of our speakers this year. As always, Jason is well prepared and has a topic of great interest to all concerned. IN ADDITION, this year Jason is Co-Locating the Jess Boot Camp at The Adolphus Hotel with ORF 2009. For those who don't know, Jason is a excellent instructor as well and is the official Jess instructor for Sandia Labs. If you want to attend ONLY the boot camp, that is possible for a small fee to help pay for the room, coffee, etc. ORF 2009 attendees will be able to attend JBC for FREE. Below is the proable syllabus even though it might change slightly between now and October 25th: Day 1 Hour Topic - 1 Jess Language Fundamentals 2 Creating Facts, Patterns, and Rules I 3 Creating Facts, Patterns, and Rules II 4 Jess API Fundamentals 5 Controlling Rule-Based Applications 6 Designing a Simple Diagnostic Expert System 7 Writing the Diagnostic Knowledge Base 8 Writing the Control Knowledge Base Day 2 Hour Topic - 1 Writing the Application Code I 2 Writing the Application Code II 3 Attaching a User Interface 4 Question and Answers If you have any problems with registering for JBC, ORF 2009 or getting registered at the hotel, please let Chelanine or me know right away. SDG James Owen Founder October Rules Fest Senior Consultant / Architect KBSC http://www.kbsc.com http://www.OctoberRulesFest.org Twitter: OctRulesFest Blogs: http://JavaRules.blogspot.com [Rulebased Systems Blog] http://ORF2009.blogspot.com [October Rules Fest Blog] http://exscg.blogspot.com/ [Expert Systems Consulting Group Blog] If I have seen a little further it is by standing on the shoulders of giants. Sir Isaac Newton in a letter to Robert Hooke, 5 Feb 1676 Come to October Rules Fest and stand on the shoulders of the Giants of the industry; if only for a week.
Re: JESS: Exception in thread main java.lang.OutOfMemoryError: Java heap space
Just one more thought - if your rules are taking 30 MINUTES rather than 30 seconds then it sounds like you have some kind of loop going on that is building (adding to) memory over and over and over. The Miss Manners benchmark does this intentionally to stress the rule engine and, in particular, the Agenda matching table, to see if the engine can handle overloads such as this. Check to see which rule is firing the most and you will probably find your problem child somewhere in that general area. SDG James Owen Founder October Rules Fest Senior Consultant / Architect KBSC http://www.kbsc.com http://www.OctoberRulesFest.org Twitter: OctRulesFest Blogs: http://JavaRules.blogspot.com [Rulebased Systems Blog] http://ORF2009.blogspot.com [October Rules Fest Blog] http://exscg.blogspot.com/ [Expert Systems Consulting Group Blog] If I have seen a little further it is by standing on the shoulders of giants. Sir Isaac Newton in a letter to Robert Hooke, 5 Feb 1676 Come to October Rules Fest and stand on the shoulders of the Giants of the industry; if only for a week. On Sep 14, 2009, at 8:42 AM, jo wrote: Hi I got following error, which surprises me as I try to keep the amount of facts to a minimum. Can I detect this condition *before* it is about to happen ? Any ideas on how to prevent this ? 30m is really not that long :( Exception in thread main java.lang.OutOfMemoryError: Java heap space at jess.factory.FactoryImpl.newToken(FactoryImpl.java:27) at jess.Node2.tokenMatchesLeft(Node2.java:326) at jess.Node2.doRunTestsVaryRight(Node2.java:314) at jess.Node2.doRunTestsVaryRight(Node2.java:299) at jess.Node2.runTestsVaryRight(Node2.java:292) at jess.Node2.callNodeLeft(Node2.java:156) at jess.NodeJoin.passAlong(NodeJoin.java:99) at jess.Node2.tokenMatchesLeft(Node2.java:328) at jess.Node2.doRunTestsVaryRight(Node2.java:314) at jess.Node2.doRunTestsVaryRight(Node2.java:299) at jess.Node2.runTestsVaryRight(Node2.java:292) at jess.Node2.callNodeLeft(Node2.java:156) at jess.NodeJoin.passAlong(NodeJoin.java:99) at jess.Node2.tokenMatchesLeft(Node2.java:328) at jess.Node2.doRunTestsVaryRight(Node2.java:314) at jess.Node2.doRunTestsVaryRight(Node2.java:299) at jess.Node2.runTestsVaryRight(Node2.java:292) at jess.Node2.callNodeLeft(Node2.java:156) at jess.Node1RTL.passAlong(Node1RTL.java:46) at jess.Node1RTL.callNodeRight(Node1RTL.java:28) at jess.Node1.passAlong(Node1.java:49) at jess.Node1MTELN.callNodeRight(Node1MTELN.java:35) at jess.Node1.passAlong(Node1.java:49) at jess.Node1TECT.callNodeRight(Node1TECT.java:40) at jess.NodeRoot.passAlong(NodeRoot.java:39) at jess.NodeRoot.callNodeRight(NodeRoot.java:14) at jess.FactList.processToken(FactList.java:31) at jess.FactList._assert(FactList.java:210) at jess.FactList.assertFact(FactList.java:181) at jess.Rete.assertFact(Rete.java:548) at jess.FactFunctions$Assert.call(FactFunctions.java:50) at jess.FunctionHolder.call(FunctionHolder.java:35) real30m12.867s user27m48.316s tx J To unsubscribe, send the words 'unsubscribe jess-users y...@address.com' in the BODY of a message to majord...@sandia.gov, NOT to the list (use your own address!) List problems? Notify owner-jess-us...@sandia.gov .
