tensorflow / tensorflow/java

ivy dependency not working on windows or linux, native TF code not found on classpath

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Lenguaje dominante
Java
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Descripción

Please make sure that this is a build/installation issue. As per our GitHub Policy, we only address code/doc bugs, performance issues, feature requests and build/installation issues on GitHub. tag:build_template

System information

  • OS Platform and Distribution (e.g., Linux Ubuntu 16.04 x86_64): Linux Ubuntu 23.04_ x86_64
  • TensorFlow installed from (source or binary): binary
  • TensorFlow version: 0.4.2
  • Java version (i.e., the output of java -version): 1.8.1
  • Java command line flags (e.g., GC parameters):
  • Installed from Maven Central?: Yes, via ivy
  • Bazel version (if compiling from source):
  • GCC/Compiler version (if compiling from source):
  • CUDA/cuDNN version:
  • GPU model and memory:

Describe the problem
I'm trying to use tensorflow 2 with ivy.xml in java project. The problem is that the maven download is not complete. It only downloads either 1. no native platform, or 2. if I specify 2 platforms (windows and linux), it only downloads one of them. AND 3. when I manually download the relevant jars, it cannot find the native hooks.

Provide the exact sequence of commands / steps that you executed before running into the problem
I first tried ivy using these dependencies in various combinations, each time making sure to delete existing tensorflow jars from my ivy local cache folder:

    <dependency org="org.tensorflow" name="tensorflow-core-api" rev="0.4.2" m:classifier="linux-x86_64-gpu"/>
    <dependency org="org.tensorflow" name="tensorflow-core-api" rev="0.4.2" m:classifier="windows-x86_64-gpu"/>
    <dependency org="org.tensorflow" name="tensorflow-core-api" rev="0.4.2"/>

Since this did not work (I never got the full set of native jars), I downloaded the jars and put them in my local project jars folder, which is on the classpath.
jars/tensorflow-core-api-0.4.2.jar
jars/tensorflow-core-api-0.4.2-linux-x86_64-gpu.jar
jars/tensorflow-core-api-0.4.2-windows-x86_64-gpu.jar

These jars are added to the project classpath in netbeans 8.2 project dialog

Any other info / logs
Include any logs or source code that would be helpful to diagnose the problem. If including tracebacks, please include the full traceback. Large logs and files should be attached.

Here is the log output:

WARNING: java.lang.NoClassDefFoundError: java.lang.ClassNotFoundException: org.tensorflow.internal.c_api
    at org.bytedeco.javacpp.Loader.load(Loader.java:918)
    at org.bytedeco.javacpp.Loader.load(Loader.java:870)
    at org.tensorflow.NativeLibrary.load(NativeLibrary.java:48)
    at org.tensorflow.TensorFlow.<clinit>(TensorFlow.java:156)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at org.tensorflow.SavedModelBundle.<clinit>(SavedModelBundle.java:651)
    at net.sf.jaer.eventprocessing.filter.MLPNoiseFilter.loadNetwork(MLPNoiseFilter.java:720)
    at net.sf.jaer.eventprocessing.filter.MLPNoiseFilter.initFilter(MLPNoiseFilter.java:550)
    at net.sf.jaer.eventprocessing.filter.NoiseTesterFilter.initFilter(NoiseTesterFilter.java:1073)
    at net.sf.jaer.eventprocessing.FilterChain.initFilters(FilterChain.java:454)
    at net.sf.jaer.graphics.AEViewer.setChip(AEViewer.java:5863)
    at net.sf.jaer.graphics.AEViewer.constructChip(AEViewer.java:1020)
    at net.sf.jaer.graphics.AEViewer.setAeChipClass(AEViewer.java:928)
    at net.sf.jaer.graphics.AEViewer.<init>(AEViewer.java:520)
    at net.sf.jaer.JAERViewer$RunningThread.run(JAERViewer.java:231)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: java.lang.ClassNotFoundException: org.tensorflow.internal.c_api
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at org.bytedeco.javacpp.Loader.load(Loader.java:913)
    ... 29 more

Here is the screenshot showing contents of the linux native jar:

Screenshot from 2023-06-12 16-34-54

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Línea de trabajo

Comienza con las declaraciones de dependencias de Ivy y los tres jars de TensorFlow 0.4.2 indicados; después, sigue el stack trace desde org.tensorflow.NativeLibrary.load a través de org.bytedeco.javacpp.Loader.load. Comprueba por qué los artefactos nativos específicos de la plataforma no exponen org.tensorflow.internal.c_api en el classpath. Se considera terminado cuando las dependencias nativas requeridas se resuelven para las plataformas indicadas y la inicialización de SavedModelBundle ya no produce ClassNotFoundException.

Escrito por el modelo de indexación a partir del texto del issue.

Evaluación

Stack tecnológico
java
Área
build-system
Tipo de issue
Error
Dificultad
4/5
Tiempo estimado
3-5 días
Estado de actividad
Estancado
Claridad
Bastante claro
Aptitud para principiantes
35/100

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