tensorflow / tensorflow/java

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

Open
#496 5 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
Java
Stars
928
Forks
227
PR merge metrics
No merged PRs in 30d

Description

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

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the Ivy dependency declarations and the three listed TensorFlow 0.4.2 jars, then follow the stack trace from org.tensorflow.NativeLibrary.load through org.bytedeco.javacpp.Loader.load. Check why the platform-native artifacts do not expose org.tensorflow.internal.c_api on the classpath. Done means the required native dependencies resolve for the reported platforms and SavedModelBundle initialization no longer raises ClassNotFoundException.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
build-system
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.