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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link="#0563C1" vlink="#954F72" style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US>Hi Dan,<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left;text-indent:21.0pt'><span lang=EN-US>Many thanks for your generous help! I think my workflows are too complicated, Local database connection and webservice are needed. Here is one workflow in the attachment. All the workflow are same except parameters, but it won¡¯t be executed in your machine.<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left;text-indent:21.0pt'><span lang=EN-US>I have understood the difference between runModelInThread() and runModel() by your help. I want to parallel execute workflow because of project requirements, so I changed my demo code as following. But it can¡¯t execute all workflows without any error(some workflow did be executed correctly). There are two typical mistakes:<o:p></o:p></span></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>parseMoML() mistake: it seems like that execution before workflow parse. <o:p></o:p></span></p><p class=MsoListParagraph align=left style='margin-left:51.0pt;text-align:left;text-indent:3.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'>Error running model or finding output file:null<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:0cm'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif"'>or<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'>Error running model or finding output file:XML element "entity" triggers exception. in file:/E:/Java/KeplerWF_OrderSubmit_Version_MatchResourceL2Order20141117/MCA_KeplerWorkflow_Engine/ at line 1 and column 38692<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'>Caused by:<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:0cm'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'> java.lang.NullPointerException</span></i><span lang=EN-US><o:p></o:p></span></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Cannot create new native thread</span><span style='font-family:ËÎÌå'>£º</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'>Running model in current thread: L2CP201412090048KeplerWF<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'>138 ms. Memory: 2938880K Free: 1208526K (41%)<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'>Error running model or finding output file:Executing command "java -jar /home/MCA/Software/apache-tomcat-7.0.55/webapps/MultiProcessSysWebService_Thread//WEB-INF/lib/WaitL3OrderExecuted.jar 10.3.10.1 3306 mccps mca mca L3RN201412090048 Finish" returned a non-zero return value of 1.<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'>The last input was: null.<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'>The standard output was: Error occurred during initialization of VM<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'>java.lang.OutOfMemoryError: unable to create new native thread<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'> at java.lang.Thread.start0(Native Method)<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'> at java.lang.Thread.start(Thread.java:714)<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'> at java.lang.ref.Reference.<clinit>(Reference.java:187)<o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:15.0pt'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'>The error output was: <o:p></o:p></span></i></p><p class=MsoListParagraph align=left style='margin-left:39.0pt;text-align:left;text-indent:0cm'><i><span lang=EN-US style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'> in .L2CP201412090048KeplerWF.L3RN201412090048WaitExecuted<o:p></o:p></span></i></p><p class=MsoNormal align=left style='text-align:left;text-indent:21.0pt'><span lang=EN-US>Why? Need I change the JVM parameters in my linux server? Because of I run hundreds of threads? If needed, should I set it in kepler code? <o:p></o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US>Any help will be grately appriciated. Thanks for your attention!<o:p></o:p></span></p><p class=MsoNormal align=right style='text-align:right;text-indent:21.0pt'><span lang=EN-US>with regards,<o:p></o:p></span></p><p class=MsoNormal align=right style='text-align:right;text-indent:21.0pt'><span lang=EN-US>Jie Zhang<o:p></o:p></span></p><div style='mso-element:para-border-div;border:none;border-bottom:dotted windowtext 3.0pt;padding:0cm 0cm 1.0pt 0cm'><p class=MsoNormal align=left style='text-align:left;text-indent:21.0pt;border:none;padding:0cm'><span lang=EN-US><o:p> </o:p></span></p></div><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US>import org.kepler.ExecutionEngine;<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US>import ptolemy.actor.CompositeActor;<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US>import Workflow.Kepler.KeplerL2OrderWorkFlowGenerator;<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US>public class test extends Thread {<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> public String Id ;<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> private ExecutionEngine engine;<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> <o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> public test(String Id) {<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> this.Id=Id;<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> }<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> <o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> public void run() {<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> // 1.Generate Moml Kepler Workflow by my class<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> KeplerL2OrderWorkFlowGenerator kL2WFG = new KeplerL2OrderWorkFlowGenerator(<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> this.Id); <o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> String Moml=kL2WFG.KeplerWorkflow();<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> <o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> //2.Run Moml by Kepler ExecutionEngine<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> System.out.println("Begin to execute!")<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> engine = ExecutionEngine.getInstance();<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> try {<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> CompositeActor model = (CompositeActor) ExecutionEngine<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> .parseMoML(Moml); <span style='color:red'>//this work seems slower than execution thread!<o:p></o:p></span></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> engine.runModel(model);<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> } catch (Exception e) {<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> System.out.println("Error running model or finding output file: "<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> + e.getMessage());<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> } <o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> }<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> <o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> public static void main(String[] args) {<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> // TODO Auto-generated method stub<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> for (int i = 0; i < 50; i++) {<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> test tempTest=new test("WorkFlow"+i);<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> tempTest.start();<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> }<o:p></o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US> }<o:p></o:p></span></p><div style='mso-element:para-border-div;border:none;border-bottom:dotted windowtext 3.0pt;padding:0cm 0cm 1.0pt 0cm'><p class=MsoNormal align=left style='text-align:left;border:none;padding:0cm'><span lang=EN-US>}<o:p></o:p></span></p></div><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal align=left style='text-align:left;text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>