Deeplearning4j: java.lang.UnsatisfiedLinkError: 'org.nd4j.nativeblas.OpaqueDataBuffer (Raspberry Pi 4, 1.0.0-SNAPSHOT)

[FredericKayser]

Issue Description

By calling the method init() of the MultiLayerNetwork class on my Raspberry Pi 4 I am getting an exception(see below). Testing the program on my computer(macOS Catalina) doesn't cause any issues.

Version Information

Please indicate relevant versions, including, if relevant:

• DL4J Version: 1.0.0-SNAPSHOT
• Raspbian GNU/Linux 10 (buster)
• OpenJDK version "11.0.7" 2020-04-14

Additional Information

Error Message: https://gist.github.com/FredericKayser/dc7235ec779ebec5867de443de4616ea

I am using 1.0.0-SNAPSHOT, because before I got this error I had the problem mentioned in this issue: https://github.com/eclipse/deeplearning4j/issues/8744

[raver119]

Typically that’s the sign of versions clash. Share your pom.xml please

[FredericKayser]

This is my pom.xml:

https://gist.github.com/FredericKayser/b147b75a47a11909c0905dbb63e5bb63

EDIT: Here should be mentioned that I package the project on the Raspberry Pi with Maven to follow your advise(https://deeplearning4j.konduit.ai/config/config-snapshots) and use 'nd4j-native' and not 'nd4j-native-platform'.

[treo]

Can you re-pull the snapshots (using -U parameter when calling mvn)? It doesn't happen often, but you might have gotten Snapshots that were in between updates.

[FredericKayser]

So I've re-pulled the snapshots a few minutes ago, I got the same exception. I used the -U parameter before too, so probably this isn't the problem.

[raver119]

@sshepel are we sure arm binaries are successfully built in CI/CD?

[sshepel]

Well from the build log, I can see that at least gcc was picked right...

Latest artifact that I can see on sonatypenexus is: nd4j-native-1.0.0-20200501.092107-18222-linux-armhf.jar

[raver119]

I'm not quite sure how it's possible. OpaqueDataBuffer class is platform-independent. It's pure java.

[treo]

@FredericKayser
Can you share the output of your mvn build with us? And ideally also the names of the nd4j related jar files in your maven cache.

The missing file should be in nd4j-native-api-1.0.0-20200501.125842-27039.jar and that file should have an md5sum of 4f6f502137f6b91e89d2cccbb699a828

[FredericKayser]

Well, it took me a while too find the correct files, but here are my nd4j related jar files:

nd4j-api

nd4j-api-1.0.0-20200501.102357-27416.jar
nd4j-api-1.0.0-20200501.123354-27417.jar
nd4j-api-1.0.0-20200501.125856-27418.jar
nd4j-api-1.0.0-SNAPSHOT.jar

nd4j-common

nd4j-common-1.0.0-20200501.102121-26713.jar
nd4j-common-1.0.0-20200501.123230-26714.jar
nd4j-common-1.0.0-20200501.125813-26715.jar
nd4j-common-1.0.0-SNAPSHOT.jar

nd4j-native-api

nd4j-native-api-1.0.0-20200501.102335-27037.jar
nd4j-native-api-1.0.0-20200501.123340-27038.jar

_nd4j-native-api-1.0.0-20200501.125842-27039.jar - md5sum: 4f6f502137f6b91e89d2cccbb699a828_

nd4j-native-api-1.0.0-SNAPSHOT.jar

nd4j-native-platform

nd4j-native-platform-1.0.0-20200501.092801-2431.jar
nd4j-native-platform-1.0.0-SNAPSHOT.jar

So I think with maven build you want my packaged jar? If I did not understand your question correctly, please write it ;)

So if it was correct, here can you download it: https://workupload.com/file/5sfMsC8kpDA

And sorry for taking so long to answer, I was a bit overwhelmed.

[saudet]

What does mvn dependency:tree look like?

[saudet]

It looks like libgomp.so.1 isn't getting bundled, and it's probably what we're going to find in the log somewhere.

@sshepel Please add the directory containing that file to java.library.path when calling mvn, something like this: https://github.com/bytedeco/javacpp-presets/blob/master/ci/install-travis.sh#L188

[FredericKayser]

Here is the dependency tree: https://gist.github.com/FredericKayser/1e6c461d48af45df7f30822ff96f4963

[saudet]

@FredericKayser Thanks! If you install libgomp.so.1 on the system, it will most likely work.

[FredericKayser]

Thank you very, very much! It is now working!