There are some notes on performance at http://ptolemy.eecs.berkeley.edu/ptolemyII/ptII3.0/ptII3.0.2/doc/coding/performance.htm
Sometimes, as a workaround, all that is necessary is to increase the size of the Java heap. The java command takes non-standard commands like -Xmx<size> to set the maximum stack size. For example, under Cygwin, to run with a 256 megabyte heap size: export JAVAFLAGS=-Xmx256m $PTII/bin/vergil To see what other <code>-X</code> commands are available, run java -X I ran your example and it looks like there is a memory leak. We'll take a look and see what's up -Christopher > Hi, > > Sorry if you received this message for the second > time.. > > I have a java.lang.OutOfMemory error problem with my > model developed in Ptolemy II version 3.0.2. > > I am working on a model which uses an ArrayToken (of > 180 tokens) and my actors change the value of the > tokens in each iteration. As tokens are immutable I am > creating new tokens in each iteration. During the run > time after several iterations the system stops with an > error java.lang.OutOfMemory. I thought some problem > with garbage collection is creating the problem so I > tried calling System.gc at the end of fire() function > in my actors but there was no change in the number of > iterations before getting the error. > > I tried to generate the same problem with the actors > of Ptolemy and created a simple model using the > ArrayExtract actor (the xml file is attached) and ran > into the same problem after several iterations (6143 > iterations on a computer with 512MB Ram, Windows XP > operating system, java version 1.4.2 ). > > Could you help me to find out the reason of this > problem? And how can I continue the simulation without > running out of memory? > > Thanks, > Nilgun Fescioglu Unver > > > > __________________________________ > Do you Yahoo!? > Yahoo! Finance Tax Center - File online. File on time. > http://taxes.yahoo.com/filing.html > --0-852522922-1080681987=:19410 > Content-Type: text/xml; name="memoryTest2.xml" > Content-Description: memoryTest2.xml > Content-Disposition: inline; filename="memoryTest2.xml" > > <?xml version="1.0" standalone="no"?> > <!DOCTYPE entity PUBLIC "-//UC Berkeley//DTD MoML 1//EN" > "http://ptolemy.eecs.berkeley.edu/xml/dtd/MoML_1.dtd";> > <entity name="memoryTest2" class="ptolemy.actor.TypedCompositeActor"> > <property name="_createdBy" class="ptolemy.kernel.attributes.VersionAttri > bute" value="3.0.2"> > </property> > <property name="DE Director" class="ptolemy.domains.de.kernel.DEDirector" > > > <property name="startTime" class="ptolemy.data.expr.Parameter" value= > "0.0"> > </property> > <property name="stopTime" class="ptolemy.data.expr.Parameter" value=" > 1.7976931348623E308"> > </property> > <property name="stopWhenQueueIsEmpty" class="ptolemy.data.expr.Parame > ter" value="true"> > </property> > <property name="synchronizeToRealTime" class="ptolemy.data.expr.Param > eter" value="false"> > </property> > <property name="isCQAdaptive" class="ptolemy.data.expr.Parameter" val > ue="true"> > </property> > <property name="minBinCount" class="ptolemy.data.expr.Parameter" valu > e="2"> > </property> > <property name="binCountFactor" class="ptolemy.data.expr.Parameter" v > alue="2"> > </property> > <property name="_location" class="ptolemy.kernel.util.Location" value > ="95.0, 35.0"> > </property> > </property> > <property name="_windowProperties" class="ptolemy.actor.gui.WindowPropert > iesAttribute" value="{bounds={104, 174, 815, 518}}"> > </property> > <property name="_vergilSize" class="ptolemy.actor.gui.SizeAttribute" valu > e="[600, 400]"> > </property> > <property name="annotation" class="ptolemy.kernel.util.Attribute"> > <property name="_hideName" class="ptolemy.kernel.util.SingletonAttrib > ute"> > </property> > <property name="_iconDescription" class="ptolemy.kernel.util.Singleto > nConfigurableAttribute"> > <configure><svg><text x="20" y="20" style="font-size:14; font-fam > ily:SansSerif; fill:blue">after 6143 iterations java lang.OutOfMemory error > > </text></svg></configure> > </property> > <property name="_smallIconDescription" class="ptolemy.kernel.util.Sin > gletonConfigurableAttribute"> > <configure> > <svg> > <text x="20" style="font-size:14; font-family:SansSerif; fill:blue" y > ="20">-A-</text> > </svg> > </configure> > </property> > <property name="_controllerFactory" class="ptolemy.vergil.basic.NodeC > ontrollerFactory"> > </property> > <property name="_editorFactory" class="ptolemy.vergil.toolbox.Annotat > ionEditorFactory"> > </property> > <property name="_location" class="ptolemy.kernel.util.Location" value > ="70.0, 235.0"> > </property> > </property> > <entity name="SingleEvent" class="ptolemy.domains.de.lib.SingleEvent"> > <property name="time" class="ptolemy.data.expr.Parameter" value="0.0" > > > </property> > <property name="value" class="ptolemy.data.expr.Parameter" value="{0. > 0944506216287, 0.0975191625284, 0.0944506216287, 0.0857999241191, 0.073067950 > 4667, 0.0582762735578, 0.0434458637753, 0.0301629913445, 0.0193529221347, 0.0 > 112813340563, 0.0084582314143, 0.0049053935788, 0.0027967090808, 0.0016312805 > 584, 0.0010305804697, 7.414891291827E-4, 6.1146737601312E-4, 5.5677601186248E > -4, 5.3524811455656E-4, 5.2731439069799E-4, 5.2457583224341E-4, 5.23690135299 > 95E-4, 5.2342166719598E-4, 5.2334537982137E-4, 5.2332505352927E-4, 5.23319974 > 39197E-4, 5.2331878392172E-4, 5.2331852216018E-4, 5.2331846815861E-4, 5.23318 > 45770494E-4, 5.233184558059E-4, 5.2331845548212E-4, 5.2331845543031E-4, 5.233 > 1845542253E-4, 5.2331845542143E-4, 5.2331845542128E-4, 5.2331845542126E-4, 5. > 2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, > 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E > -4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5! > .2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E- > 4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.233184554212 > 6E-4, 5.2331845542126E-4, 5.2331845542128E-4, 5.2331845542143E-4, 5.233184554 > 2253E-4, 5.2331845543031E-4, 5.2331845548212E-4, 5.233184558059E-4, 5.2331845 > 770494E-4, 5.2331846815861E-4, 0.0, 5.2331878392172E-4, 5.2331997439197E-4, 5 > .2332505352927E-4, 5.2334537982137E-4, 5.2342166719598E-4, 5.2369013529995E-4 > , 5.2457583224341E-4, 5.2731439069799E-4, 5.3524811455656E-4, 5.5677601186248 > E-4, 6.1146737601312E-4, 7.414891291827E-4, 0.0010305804697, 0.0016312805584, > 0.0027967090808, 0.0049053935788, 0.0084582314143, 0.0112813340563, 0.019352 > 9221347, 0.0301629913445, 0.0434458637753, 0.0582762735578, 0.0730679504667, > 0.0857999241191}"> > </property> > <property name="_location" class="ptolemy.kernel.util.Location" value > ="90.0, 145.0"> > </property> > <port name="output" class="ptolemy.actor.TypedIOPort"> > <property name="output"/> > </port> > </entity> > <entity name="TimedDelay" class="ptolemy.domains.de.lib.TimedDelay"> > <property name="delay" class="ptolemy.data.expr.Parameter" value="0.0 > "> > </property> > <property name="_location" class="ptolemy.kernel.util.Location" value > ="295.0, 60.0"> > </property> > <port name="input" class="ptolemy.domains.de.kernel.DEIOPort"> > <property name="input"/> > <property name="_cardinal" class="ptolemy.kernel.util.StringAttri > bute" value="EAST"> > </property> > </port> > <port name="output" class="ptolemy.domains.de.kernel.DEIOPort"> > <property name="output"/> > <property name="_cardinal" class="ptolemy.kernel.util.StringAttri > bute" value="WEST"> > </property> > </port> > </entity> > <entity name="Display" class="ptolemy.actor.lib.gui.Display"> > <property name="rowsDisplayed" class="ptolemy.data.expr.Parameter" va > lue="10"> > </property> > <property name="columnsDisplayed" class="ptolemy.data.expr.Parameter" > value="40"> > </property> > <property name="title" class="ptolemy.kernel.util.StringAttribute"> > </property> > <property name="_windowProperties" class="ptolemy.actor.gui.WindowPro > pertiesAttribute"> > </property> > <property name="_location" class="ptolemy.kernel.util.Location" value > ="535.0, 125.0"> > </property> > <port name="input" class="ptolemy.actor.TypedIOPort"> > <property name="input"/> > <property name="multiport"/> > </port> > </entity> > <entity name="ArrayExtract" class="ptolemy.actor.lib.ArrayExtract"> > <property name="sourcePosition" class="ptolemy.data.expr.Parameter" v > alue="0"> > </property> > <property name="extractLength" class="ptolemy.data.expr.Parameter" va > lue="90"> > </property> > <property name="destinationPosition" class="ptolemy.data.expr.Paramet > er" value="0"> > </property> > <property name="outputArrayLength" class="ptolemy.data.expr.Parameter > " value="90"> > </property> > <property name="_location" class="ptolemy.kernel.util.Location" value > ="325.0, 145.0"> > </property> > <port name="input" class="ptolemy.actor.TypedIOPort"> > <property name="input"/> > </port> > <port name="output" class="ptolemy.actor.TypedIOPort"> > <property name="output"/> > </port> > </entity> > <entity name="Counter" class="ptolemy.actor.lib.Counter"> > <property name="_location" class="ptolemy.kernel.util.Location" value > ="515.0, 55.0"> > </property> > <port name="increment" class="ptolemy.actor.TypedIOPort"> > <property name="input"/> > </port> > <port name="decrement" class="ptolemy.actor.TypedIOPort"> > <property name="input"/> > </port> > <port name="output" class="ptolemy.actor.TypedIOPort"> > <property name="output"/> > </port> > </entity> > <relation name="relation" class="ptolemy.actor.TypedIORelation"> > <vertex name="vertex1" value="485.0, 150.0"> > </vertex> > </relation> > <relation name="relation5" class="ptolemy.actor.TypedIORelation"> > </relation> > <relation name="relation3" class="ptolemy.actor.TypedIORelation"> > <vertex name="vertex1" value="170.0, 145.0"> > </vertex> > </relation> > <link port="SingleEvent.output" relation="relation3"/> > <link port="TimedDelay.input" relation="relation"/> > <link port="TimedDelay.output" relation="relation3"/> > <link port="Display.input" relation="relation"/> > <link port="Display.input" relation="relation5"/> > <link port="ArrayExtract.input" relation="relation3"/> > <link port="ArrayExtract.output" relation="relation"/> > <link port="Counter.increment" relation="relation"/> > <link port="Counter.output" relation="relation5"/> > </entity> > > --0-852522922-1080681987=:19410-- > > ---------------------------------------------------------------------------- > Posted to the ptolemy-hackers mailing list. 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