java.lang.ClassNotFoundException: org.nd4j.nativeblas.OpaqueDataBuffer

ND4J
1

Hi,

i got a ClassNotFoundException for OpaqueDataBuffer.

altough i have following in my pom.xml

 <dependency>
        <groupId>org.nd4j</groupId>
        <artifactId>nd4j-native-api</artifactId>
        <version>1.0.0-beta6</version>
    </dependency>

[main] INFO org.nd4j.versioncheck.VersionCheck - org.nd4j : nd4j-native-api : 1.0.0-beta6
[main] INFO org.nd4j.versioncheck.VersionCheck - org.nd4j : protobuf : 1.0.0-SNAPSHOT
Warning: Loader.putMemberOffset(): java.lang.ClassNotFoundException: org.nd4j.nativeblas.OpaqueDataBuffer
Warning: Loader.putMemberOffset(): java.lang.ClassNotFoundException: org.nd4j.nativeblas.OpaqueConstantShapeBuffer
[main] INFO org.nd4j.nativeblas.NativeOpsHolder - Number of threads used for linear algebra: 32
[main] INFO org.nd4j.nativeblas.Nd4jBlas - Number of threads used for OpenMP BLAS: 0

can you help what is missing?

2

You are using a mix of beta6 and current (post beta7) SNAPSHOTS. That just can not work. You have to use the same version for all parts of DL4J.

3

thank you

but where does beta6 come from ?

?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>KI</groupId>
    <artifactId>1.0</artifactId>
    <version>1.0-SNAPSHOT</version>
    <properties>
        <!-- Change the nd4j.backend property to nd4j-cuda-9.2-platform,nd4j-cuda-10.0-platform or nd4j-cuda-10.1-platform to use CUDA GPUs -->
        <!--nd4j.backend>nd4j-native-platform</nd4j.backend -->
        <nd4j.backend>nd4j-cuda-10.1-platform</nd4j.backend>
        <dl4j.version>1.0.0-SNAPSHOT</dl4j.version>     <!-- Modified for using SNAPSHOT versions -->
        <nd4j.version>1.0.0-SNAPSHOT</nd4j.version>     <!-- Modified for using SNAPSHOT versions -->
        <logback.version>1.2.3</logback.version>
        <java.version>1.8</java.version>
        <maven-shade-plugin.version>2.4.3</maven-shade-plugin.version>
        <guava.version>23.0</guava.version>
        <jfreechart.version>1.0.19</jfreechart.version>
        <opencsv.version>3.9</opencsv.version>
        <cuda.version>10.1</cuda.version>
        <cudnn.version>7.4</cudnn.version>

    </properties>

    <!-- Modified for using SNAPSHOT versions - added repositories section -->
    <repositories>
        <repository>
            <id>snapshots-repo</id>
            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
            <releases>
                <enabled>false</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
                <updatePolicy>daily</updatePolicy>  <!-- Optional, update daily -->
            </snapshots>
        </repository>

        <repository>
            <id>mvnrepository</id>
            <url>https://mvnrepository.com/artifact/org.apache.opennlp/opennlp-tools</url>
        </repository>

    </repositories>


    <build>

        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>8</source>
                    <target>8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>org.apache.opennlp</groupId>
            <artifactId>opennlp-tools</artifactId>
            <version>1.9.1</version>
        </dependency>
        <dependency>
            <groupId>org.bytedeco</groupId>
            <artifactId>cuda</artifactId>
            <version>10.1-7.6-1.5.2</version>
            <classifier>windows-x86_64</classifier>
        </dependency>
        <dependency>
            <groupId>org.nd4j</groupId>
            <artifactId>nd4j-cuda-10.1</artifactId>
            <version>${nd4j.version}</version>
        </dependency>

        <dependency>
            <groupId>org.nd4j</groupId>
            <artifactId>nd4j-native</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.nd4j</groupId>
            <artifactId>nd4j-native-api</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>org.deeplearning4j</groupId>
            <artifactId>deeplearning4j-core</artifactId>
            <version>${dl4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.deeplearning4j</groupId>
            <artifactId>deeplearning4j-nlp</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.28</version>
        </dependency>
        <dependency>
        <groupId>org.tensorflow</groupId>
        <artifactId>tensorflow</artifactId>
        <version>1.14.0</version>
    </dependency>
        <dependency>
            <groupId>org.jfree</groupId>
            <artifactId>jfreechart</artifactId>
            <version>${jfreechart.version}</version>
        </dependency>
        <!-- Guava dependency -->
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>${guava.version}</version>
        </dependency>
        <dependency>
            <groupId>com.opencsv</groupId>
            <artifactId>opencsv</artifactId>
            <version>${opencsv.version}</version>
        </dependency>
    </dependencies>
</project>
4

run mvn dependency:tree and post the output here, it should show you exactly where it comes from.

5

thank you for your support. finally it works

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>KI</groupId>
    <artifactId>1.0</artifactId>
    <version>1.0-SNAPSHOT</version>
    <properties>
        <!-- Change the nd4j.backend property to nd4j-cuda-9.2-platform,nd4j-cuda-10.0-platform or nd4j-cuda-10.1-platform to use CUDA GPUs -->
        <!--nd4j.backend>nd4j-native-platform</nd4j.backend -->
        <nd4j.backend>nd4j-cuda-10.1-platform</nd4j.backend>
        <dl4j.version>1.0.0-SNAPSHOT</dl4j.version>     <!-- Modified for using SNAPSHOT versions -->
        <nd4j.version>1.0.0-SNAPSHOT</nd4j.version>     <!-- Modified for using SNAPSHOT versions -->
        <logback.version>1.2.3</logback.version>
        <java.version>1.8</java.version>
        <maven-shade-plugin.version>2.4.3</maven-shade-plugin.version>
        <guava.version>23.0</guava.version>
        <jfreechart.version>1.0.19</jfreechart.version>
        <opencsv.version>3.9</opencsv.version>
        <cuda.version>10.1</cuda.version>
        <cudnn.version>7.4</cudnn.version>

    </properties>

    <!-- Modified for using SNAPSHOT versions - added repositories section -->
    <repositories>
        <repository>
            <id>snapshots-repo</id>
            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
            <releases>
                <enabled>false</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
                <updatePolicy>daily</updatePolicy>  <!-- Optional, update daily -->
            </snapshots>
        </repository>

        <repository>
            <id>mvnrepository</id>
            <url>https://mvnrepository.com/artifact/org.apache.opennlp/opennlp-tools</url>
        </repository>
        <repository>
        <id>mvnrepository3</id>
        <url>https://mvnrepository.com/artifact/org.bytedeco/javacpp</url>
    </repository>

    </repositories>


    <build>

        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>8</source>
                    <target>8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>org.apache.opennlp</groupId>
            <artifactId>opennlp-tools</artifactId>
            <version>1.9.1</version>
        </dependency>
        <dependency>
            <groupId>org.nd4j</groupId>
            <artifactId>nd4j-cuda-10.1</artifactId>
            <version>${nd4j.version}</version>
        </dependency>

        <dependency>
            <groupId>org.nd4j</groupId>
            <artifactId>nd4j-native</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.nd4j</groupId>
            <artifactId>nd4j-native-api</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>org.deeplearning4j</groupId>
            <artifactId>deeplearning4j-core</artifactId>
            <version>${dl4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.deeplearning4j</groupId>
            <artifactId>deeplearning4j-nlp</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.28</version>
        </dependency>
        <dependency>
        <groupId>org.tensorflow</groupId>
        <artifactId>tensorflow</artifactId>
        <version>1.14.0</version>
    </dependency>
        <dependency>
            <groupId>org.jfree</groupId>
            <artifactId>jfreechart</artifactId>
            <version>${jfreechart.version}</version>
        </dependency>
        <!-- Guava dependency -->
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>${guava.version}</version>
        </dependency>
        <dependency>
            <groupId>com.opencsv</groupId>
            <artifactId>opencsv</artifactId>
            <version>${opencsv.version}</version>
        </dependency>


    </dependencies>
</project>