Problems running Dl4j with CUDA

I'm trying to run a dl4j model using GPU instead of CPU. The model runs perfectly well using CPU.
So I decided to try CUDA to be able to to take advantage of the my GPU. I followed every step described in here and for the CUDA install I followed the instructions from NVIDIA to install CUDA Toolkit from here. The code compiles ok but I get an error:

Skipped [JCublasBackend] backend (unavailable): java.lang.UnsatisfiedLinkError: C:\Users\albertb\.javacpp\cache\cuda-10.2-7.6-1.5.3-windows-x86_64.jar\org\bytedeco\cuda\windows-x86_64\jnicudart.dll: Can't find dependent libraries
Exception in thread "main" java.lang.ExceptionInInitializerError
	at TestCUDA.run(TestCUDA.java:12)
	at TestCUDA.main(TestCUDA.java:7)
Caused by: java.lang.RuntimeException: org.nd4j.linalg.factory.Nd4jBackend$NoAvailableBackendException: Please ensure that you have an nd4j back-end on your classpath. Please see: https://deeplearning4j.konduit.ai/nd4j/backend
	at org.nd4j.linalg.factory.Nd4j.initContext(Nd4j.java:5094)
	at org.nd4j.linalg.factory.Nd4j.<clinit>(Nd4j.java:270)
	... 2 more
Caused by: org.nd4j.linalg.factory.Nd4jBackend$NoAvailableBackendException: Please ensure that you have an nd4j backend on your classpath. Please see: https://deeplearning4j.konduit.ai/nd4j/backend
	at org.nd4j.linalg.factory.Nd4jBackend.load(Nd4jBackend.java:221)
	at org.nd4j.linalg.factory.Nd4j.initContext(Nd4j.java:5091)
	... 3 more

My project was created using Maven on IntelliJ. All the dependencies are ok I guess otherwise the code would not compile. Some back-end dependency or library or install must be missing.
May be a version incompatibility is the problem.
The message Please ensure that you have an nd4j backend on your classpath gives me some hint about some back-end jar that must be there. But Maven is supposed to take care of that... as far as I know.

I searched internet for some solution or example or tutorial.. anything !!
There are all colones of the same instruction from the links above.

Some technical info:

• Windows 10
• Java 1.8 IntelliJ + Maven
• dl4j 1.0,0-beta7
• nd4j-cuda-10.2
• CUDA 11.1 - latest version today

I'll keep trying to solve the problem but I would appreciate any help.
Thanks.

You likely have the wrong cuda version installed. The nd4j cuda version is specified in the artifact id like: nd4j-cuda-11.0/10.2.

If you want, you can use the redist artifacts from javacpp for this: https://search.maven.org/artifact/org.bytedeco/cuda-platform-redist/11.0-8.0-1.5.4/jar

This is the latest version for cuda 11. Nd4j just uses javacpp underneath for all of its native interop.

I’m resolved it! Now my example working on GeForce3090!!!

Part of My POM:

 org.example
    dl4jCuda
    1.0-SNAPSHOT

        <dependency>
            <groupId>org.deeplearning4j</groupId>
            <artifactId>deeplearning4j-cuda-11.0</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.deeplearning4j</groupId>
            <artifactId>deeplearning4j-core</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>

Also you need build nd4j-cuda-11.0 from sources and add all *jar and dll files to your project!