Hi All
I have restructured the examples-ga module to fix a few issues and
created separate child modules for each type of usages. There was also a
minor bug related to the logger class name in commons-ga module, which I
fixed. A new PR(*#203*) has been created. Kindly review the same and let
me know if you see any issues with it.
https://github.com/apache/commons-math/pull/203
Thanks & Regards
--Avijit Basak
On Wed, 12 Jan 2022 at 20:55, Avijit Basak <avijit.ba...@gmail.com> wrote:
> Hi All
>
> I have lost track of the jar creation process in the examples
> module. Everytime before commiting I have executed examples using Eclipse
> IDE which ran successfully. I need to modify the examples module. Sorry for
> any inconvenience. Please find my additional responses below.
>
> >There are issues with the expected functionality of the "examples-ga"
> module.
>
> >Assuming that the following command has been issued
> > $ JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/ mvn package
> >and has completed successfully, executable JAR files should have been
> >created under the "target" directories.
>
> >For example, issuing this command (example for the "neuralnet" module):
> > $ java -jar
> commons-math-examples/examples-sofm/tsp/target/examples-sofm-tsp.jar
> >outputs
> >---CUT---
> >Missing required option '-o=outputFile'
> >Usage: <main class> [-hV] [-j=numJobs] [-m=maxTrials] [-n=neuronsPerCity]
> > -o=outputFile [-s=numSamples]
> >Run the application
> > -h, --help Show this help message and exit.
> > -j=numJobs Number of concurrent tasks (default: 8).
> > -m=maxTrials Maximal number of trials (default: 10).
> > -n=neuronsPerCity Average number of neurons per city (default: 2.2).
> > -o=outputFile Output file name.
> > -s=numSamples Number of samples for the training (default: 2000).
> > -V, --version Print version information and exit.
> >---CUT---
>
> >The above thus shows that the program runs as expected (passing the
> missing
> >required argument produces the expected output file).
>
> >Doing the equivalent for the new examples, e.g.
> > $ java -jar
> commons-math-examples/examples-ga/examples-ga-tsp/target/examples-ga-mathfunctions.jar
> >results in
> >---CUT---
> >Exception in thread "main" java.lang.UnsatisfiedLinkError: Can't load
> >library: /usr/lib/jvm/java-11-openjdk-amd64/lib/libawt_xawt.so
> > at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2630)
> > at java.base/java.lang.Runtime.load0(Runtime.java:768)
> > at java.base/java.lang.System.load(System.java:1837)
> > at java.base/java.lang.ClassLoader$NativeLibrary.load0(Native Method)
> > at
> java.base/java.lang.ClassLoader$NativeLibrary.load(ClassLoader.java:2442)
> > at
> java.base/java.lang.ClassLoader$NativeLibrary.loadLibrary(ClassLoader.java:2498)
> > at java.base/java.lang.ClassLoader.loadLibrary0(ClassLoader.java:2694)
> > at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2648)
> > at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:830)
> > at java.base/java.lang.System.loadLibrary(System.java:1873)
> > at java.desktop/java.awt.Toolkit$3.run(Toolkit.java:1399)
> > at java.desktop/java.awt.Toolkit$3.run(Toolkit.java:1397)
> > at java.base/java.security.AccessController.doPrivileged(Native
> Method)
> > at java.desktop/java.awt.Toolkit.loadLibraries(Toolkit.java:1396)
> > at java.desktop/java.awt.Toolkit.<clinit>(Toolkit.java:1429)
> > at java.desktop/java.awt.Component.<clinit>(Component.java:621)
> > at
> org.apache.commons.math4.examples.ga.tsp.TSPOptimizer.main(TSPOptimizer.java:62)
> >---CUT---
>
> >[Please note that the name of the JAR also looks wrong (a copy/paste
> mistake?).]
>
> --There is an issue in the jar file name. But in my system the TSP
> application executed successfully. The commands I have executed are given
> below:
> $ mvn package
> $ java -jar examples-ga-mathfunctions.jar
> JDK version in my local system is "1.8.0_301"
>
> --In the mvn command specified by you JAVA_HOME is assigned as
> "/usr/lib/jvm/java-8-openjdk-amd64/" but during execution of jar it is
> using java-11 Could you please confirm what is the JDK version used and
> ensure same version is used for both. This issue usually comes if the JDK
> is not properly installed.
>
> >Command
> > $ java -jar
> commons-math-examples/examples-ga/examples-ga-math-functions/target/examples-ga-mathfunctions.jar
> >also fails, with the following error
> >---CUT---
> >Error: Could not find or load main class
>
> >org.apache.commons.math4.examples.ga.mathfunctions.Dimension2FunctionOptimizer
> >Caused by: java.lang.ClassNotFoundException:
>
> >org.apache.commons.math4.examples.ga.mathfunctions.Dimension2FunctionOptimizer
> >---CUT---
> -- This is due to the wrong package name. I introduced a sub package based
> on dimension but forgot to modify the same in the pom file.
>
> >I noticed that there is an example relating to "Dimension2" and another
> >to "DimensionN". Isn't the former, in principle, a special case of the
> latter?
> --Yes, the former is the special case of the latter. But the way the
> executable jar is generated I need to keep a single java file with the main
> method and the number of dimensions needs to be passed as a program
> argument.
> --I shall make the changes and create a PR for the new feature branch.
>
>
> Thanks & Regards
> --Avijit Basak
>
> On Sun, 9 Jan 2022 at 01:01, Gilles Sadowski <gillese...@gmail.com> wrote:
>
>> Hello.
>>
>> I've also started to take a look.
>>
>> There are issues with the expected functionality of the "examples-ga"
>> module.
>>
>> Assuming that the following command has been issued
>> $ JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/ mvn package
>> and has completed successfully, executable JAR files should have been
>> created under the "target" directories.
>>
>> For example, issuing this command (example for the "neuralnet" module):
>> $ java -jar
>> commons-math-examples/examples-sofm/tsp/target/examples-sofm-tsp.jar
>> outputs
>> ---CUT---
>> Missing required option '-o=outputFile'
>> Usage: <main class> [-hV] [-j=numJobs] [-m=maxTrials] [-n=neuronsPerCity]
>> -o=outputFile [-s=numSamples]
>> Run the application
>> -h, --help Show this help message and exit.
>> -j=numJobs Number of concurrent tasks (default: 8).
>> -m=maxTrials Maximal number of trials (default: 10).
>> -n=neuronsPerCity Average number of neurons per city (default: 2.2).
>> -o=outputFile Output file name.
>> -s=numSamples Number of samples for the training (default: 2000).
>> -V, --version Print version information and exit.
>> ---CUT---
>>
>> The above thus shows that the program runs as expected (passing the
>> missing
>> required argument produces the expected output file).
>>
>> Doing the equivalent for the new examples, e.g.
>> $ java -jar
>> commons-math-examples/examples-ga/examples-ga-tsp/target/examples-ga-mathfunctions.jar
>> results in
>> ---CUT---
>> Exception in thread "main" java.lang.UnsatisfiedLinkError: Can't load
>> library: /usr/lib/jvm/java-11-openjdk-amd64/lib/libawt_xawt.so
>> at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2630)
>> at java.base/java.lang.Runtime.load0(Runtime.java:768)
>> at java.base/java.lang.System.load(System.java:1837)
>> at java.base/java.lang.ClassLoader$NativeLibrary.load0(Native Method)
>> at
>> java.base/java.lang.ClassLoader$NativeLibrary.load(ClassLoader.java:2442)
>> at
>> java.base/java.lang.ClassLoader$NativeLibrary.loadLibrary(ClassLoader.java:2498)
>> at java.base/java.lang.ClassLoader.loadLibrary0(ClassLoader.java:2694)
>> at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2648)
>> at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:830)
>> at java.base/java.lang.System.loadLibrary(System.java:1873)
>> at java.desktop/java.awt.Toolkit$3.run(Toolkit.java:1399)
>> at java.desktop/java.awt.Toolkit$3.run(Toolkit.java:1397)
>> at java.base/java.security.AccessController.doPrivileged(Native
>> Method)
>> at java.desktop/java.awt.Toolkit.loadLibraries(Toolkit.java:1396)
>> at java.desktop/java.awt.Toolkit.<clinit>(Toolkit.java:1429)
>> at java.desktop/java.awt.Component.<clinit>(Component.java:621)
>> at
>> org.apache.commons.math4.examples.ga.tsp.TSPOptimizer.main(TSPOptimizer.java:62)
>> ---CUT---
>>
>> [Please note that the name of the JAR also looks wrong (a copy/paste
>> mistake?).]
>>
>> Command
>> $ java -jar
>> commons-math-examples/examples-ga/examples-ga-math-functions/target/examples-ga-mathfunctions.jar
>> also fails, with the following error
>> ---CUT---
>> Error: Could not find or load main class
>>
>> org.apache.commons.math4.examples.ga.mathfunctions.Dimension2FunctionOptimizer
>> Caused by: java.lang.ClassNotFoundException:
>>
>> org.apache.commons.math4.examples.ga.mathfunctions.Dimension2FunctionOptimizer
>> ---CUT---
>>
>> I noticed that there is an example relating to "Dimension2" and another
>> to "DimensionN". Isn't the former, in principle, a special case of the
>> latter?
>>
>>
>> Regards,
>> Gilles
>>
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>>
>>
>
> --
> Avijit Basak
>
