If you write code with ND4S and try to run it with “~run”, you’ll get the following error, subsequent to the first run.
The fix to this is to add this line to your build.sbt, which causes a new JVM to run on each run:
fork := true
Error:
java.lang.ExceptionInInitializerError at org.nd4j.linalg.cpu.nativecpu.ops.NativeOpExecutioner.(NativeOpExecutioner.java:53) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at org.nd4j.linalg.factory.Nd4j.initWithBackend(Nd4j.java:6185) at org.nd4j.linalg.factory.Nd4j.initContext(Nd4j.java:6087) at org.nd4j.linalg.factory.Nd4j. (Nd4j.java:201) at org.nd4s.Implicits$IntArray2INDArray$.asNDArray$extension(Implicits.scala:48) at Main$.main(Main.scala:10) at Main.main(Main.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) Caused by: java.lang.RuntimeException: ND4J is probably missing dependencies. For more information, please refer to: http://nd4j.org/getstarted.html at org.nd4j.nativeblas.NativeOpsHolder. (NativeOpsHolder.java:51) at org.nd4j.nativeblas.NativeOpsHolder. (NativeOpsHolder.java:19) at org.nd4j.linalg.cpu.nativecpu.ops.NativeOpExecutioner. (NativeOpExecutioner.java:53) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at org.nd4j.linalg.factory.Nd4j.initWithBackend(Nd4j.java:6185) at org.nd4j.linalg.factory.Nd4j.initContext(Nd4j.java:6087) at org.nd4j.linalg.factory.Nd4j. (Nd4j.java:201) at org.nd4s.Implicits$IntArray2INDArray$.asNDArray$extension(Implicits.scala:48) at Main$.main(Main.scala:10) at Main.main(Main.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) Caused by: java.lang.UnsatisfiedLinkError: no jnind4jcpu in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867) at java.lang.Runtime.loadLibrary0(Runtime.java:870) at java.lang.System.loadLibrary(System.java:1122) at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:976) at org.bytedeco.javacpp.Loader.load(Loader.java:777) at org.bytedeco.javacpp.Loader.load(Loader.java:684) at org.nd4j.nativeblas.Nd4jCpu. (Nd4jCpu.java:10) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.bytedeco.javacpp.Loader.load(Loader.java:739) at org.bytedeco.javacpp.Loader.load(Loader.java:684) at org.nd4j.nativeblas.Nd4jCpu$NativeOps. (Nd4jCpu.java:63) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.nd4j.nativeblas.NativeOpsHolder. (NativeOpsHolder.java:29) at org.nd4j.nativeblas.NativeOpsHolder. (NativeOpsHolder.java:19) at org.nd4j.linalg.cpu.nativecpu.ops.NativeOpExecutioner. (NativeOpExecutioner.java:53) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at org.nd4j.linalg.factory.Nd4j.initWithBackend(Nd4j.java:6185) at org.nd4j.linalg.factory.Nd4j.initContext(Nd4j.java:6087) at org.nd4j.linalg.factory.Nd4j. (Nd4j.java:201) at org.nd4s.Implicits$IntArray2INDArray$.asNDArray$extension(Implicits.scala:48) at Main$.main(Main.scala:10) at Main.main(Main.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) Caused by: java.lang.UnsatisfiedLinkError: Native Library C:\Users\gary\.javacpp\cache\nd4j-native-0.9.1-windows-x86_64.jar\org\nd4j\nativeblas\windows-x86_64\jnind4jcpu.dll already loaded in another classloader at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1907) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824) at java.lang.Runtime.load0(Runtime.java:809) at java.lang.System.load(System.java:1086) at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:956) at org.bytedeco.javacpp.Loader.load(Loader.java:777) at org.bytedeco.javacpp.Loader.load(Loader.java:684) at org.nd4j.nativeblas.Nd4jCpu. (Nd4jCpu.java:10) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.bytedeco.javacpp.Loader.load(Loader.java:739) at org.bytedeco.javacpp.Loader.load(Loader.java:684) at org.nd4j.nativeblas.Nd4jCpu$NativeOps. (Nd4jCpu.java:63) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.nd4j.nativeblas.NativeOpsHolder. (NativeOpsHolder.java:29) at org.nd4j.nativeblas.NativeOpsHolder. (NativeOpsHolder.java:19) at org.nd4j.linalg.cpu.nativecpu.ops.NativeOpExecutioner. (NativeOpExecutioner.java:53) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at org.nd4j.linalg.factory.Nd4j.initWithBackend(Nd4j.java:6185) at org.nd4j.linalg.factory.Nd4j.initContext(Nd4j.java:6087) at org.nd4j.linalg.factory.Nd4j. (Nd4j.java:201) at org.nd4s.Implicits$IntArray2INDArray$.asNDArray$extension(Implicits.scala:48) at Main$.main(Main.scala:10) at Main.main(Main.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498)