Question

我正在尝试从deeplearning4j示例运行CnnSentenceClassification。我将此文件移至Gradle项目。当我从日食中运行该类时，它工作正常。但是，当我从./gradlew run运行它时出现以下错误：

Exception in thread "main" java.lang.ExceptionInInitializerError
at 
main.CnnSentenceClassification.main(CnnSentenceClassification.java:75)
Caused by: java.lang.RuntimeException: 
org.nd4j.linalg.factory.Nd4jBackend$NoAvailableBackendException: 
Please ensure that you have an nd4j backend on your classpath. Please 
see: http://nd4j.org/getstarted.html
at org.nd4j.linalg.factory.Nd4j.initContext(Nd4j.java:6089)
at org.nd4j.linalg.factory.Nd4j.<clinit>(Nd4j.java:201)
... 1 more
Caused by: 
org.nd4j.linalg.factory.Nd4jBackend$NoAvailableBackendException: 
Please ensure that you have an nd4j backend on your classpath. Please 
see: http://nd4j.org/getstarted.html
at org.nd4j.linalg.factory.Nd4jBackend.load(Nd4jBackend.java:258)
at org.nd4j.linalg.factory.Nd4j.initContext(Nd4j.java:6086)
... 2 more

我检查了nd4j-api-0.9.1.jar在我的类路径中。这是我的build.gradle：

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'application'

repositories {
    jcenter()
}

mainClassName="main.CnnSentenceClassification"

dependencies {
    compile group: 'org.deeplearning4j', name: 'deeplearning4j-core', version: '0.9.1'
    compile group: 'org.deeplearning4j', name: 'deeplearning4j-nlp', version: '0.9.1'       

    testCompile group: 'org.nd4j', name: 'nd4j-native-platform', version: '0.9.1'
    compile group: 'org.nd4j', name: 'nd4j-api', version: '0.9.1'

    compile "org.slf4j:slf4j-simple:1.7.25"
    compile "org.slf4j:slf4j-api:1.7.25"
}

Answer 1

你在nd4j后端有测试范围。 nd4j后端永远不是可选的。 https://nd4j.org/backend.html

错误在消息中是正确的。我们甚至会在堆栈跟踪中为您提供一个解释链接。

Answer 2

我遇到了同样的问题。希望它可以为其他人节省时间

您需要一个ND4J后端，这意味着仅在项目的pom中包括以下依赖项：

<dependency>
    <groupId>org.nd4j</groupId>
    <artifactId>nd4j-native</artifactId>
    <version>0.9.1</version>
</dependency>

此本地后端使用CPU进行计算。启用CUDA的图形卡还有另一个依赖性。

我发现此链接有用： DL4J Performance Debugging

Deeplearning4j示例不适用于gradle

2 个答案: