DL4J worked before on the same machine. After I upgraded to KNIME 3.5 it stopped working.
The error message says a library is missing. However, I can see that file.
[uXXX@elc7papp02 libnd4jcuda.so]$ ls -l
total 195242
-rw-r–r-- 1 uXXX users 166239828 Dec 31 1969 libnd4jcuda.so
[uXXX@elc7papp02 libnd4jcuda.so]$ pwd
/home/uXXX/.javacpp/cache/libnd4jcuda.so
java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.knime.ext.dl4j.libs (934).
at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:116)
at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:529)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:325)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:345)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:423)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:372)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:364)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:161)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.eclipse.osgi.internal.framework.EquinoxBundle.loadClass(EquinoxBundle.java:564)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:291)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:286)
at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceNode.createPage(WorkbenchPreferenceNode.java:48)
at org.eclipse.jface.preference.PreferenceDialog.createPage(PreferenceDialog.java:1280)
at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.createPage(FilteredPreferenceDialog.java:355)
at org.eclipse.jface.preference.PreferenceDialog.showPage(PreferenceDialog.java:1167)
at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredPreferenceDialog.java:608)
at org.eclipse.jface.preference.PreferenceDialog$5.lambda$0(PreferenceDialog.java:656)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.preference.PreferenceDialog$5.selectionChanged(PreferenceDialog.java:653)
at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:878)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:875)
at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1244)
at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1270)
at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:265)
at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:259)
at org.eclipse.jface.util.OpenStrategy$1.lambda$1(OpenStrategy.java:431)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4528)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4146)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:818)
at org.eclipse.jface.window.Window.open(Window.java:794)
at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.open(WorkbenchPreferenceDialog.java:211)
at org.eclipse.ui.internal.OpenPreferencesAction.run(OpenPreferencesAction.java:63)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565)
at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:397)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5219)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4553)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4143)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:687)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
at org.knime.product.rcp.KNIMEApplication.start(KNIMEApplication.java:141)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
at org.eclipse.equinox.launcher.Main.main(Main.java:1492)
Caused by: org.osgi.framework.BundleException: Exception in org.knime.ext.dl4j.libs.DL4JPluginActivator.start() of bundle org.knime.ext.dl4j.libs.
at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:795)
at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:724)
at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:932)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:309)
at org.eclipse.osgi.container.Module.doStart(Module.java:581)
at org.eclipse.osgi.container.Module.start(Module.java:449)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:470)
at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
… 72 more
Caused by: java.lang.ExceptionInInitializerError
at org.nd4j.jita.concurrency.CudaAffinityManager.getNumberOfDevices(CudaAffinityManager.java:185)
at org.nd4j.jita.constant.ConstantProtector.purgeProtector(ConstantProtector.java:38)
at org.nd4j.jita.constant.ConstantProtector.(ConstantProtector.java:31)
at org.nd4j.jita.constant.ConstantProtector.(ConstantProtector.java:20)
at org.nd4j.jita.constant.ProtectedCudaConstantHandler.(ProtectedCudaConstantHandler.java:48)
at org.nd4j.jita.constant.CudaConstantHandler.(CudaConstantHandler.java:17)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.nd4j.linalg.factory.Nd4j.initWithBackend(Nd4j.java:6150)
at org.nd4j.linalg.factory.Nd4j.initContext(Nd4j.java:6087)
at org.nd4j.linalg.factory.Nd4j.(Nd4j.java:201)
at org.knime.ext.dl4j.libs.DL4JPluginActivator.start(DL4JPluginActivator.java:173)
at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:774)
at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:767)
… 79 more
Caused by: java.lang.RuntimeException: ND4J is probably missing dependencies. For more information, please refer to: http://nd4j.org/getstarted.html
at org.nd4j.nativeblas.NativeOpsHolder.(NativeOpsHolder.java:51)
at org.nd4j.nativeblas.NativeOpsHolder.(NativeOpsHolder.java:19)
… 95 more
Caused by: java.lang.UnsatisfiedLinkError: no jnind4jcuda in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867)
at java.lang.Runtime.loadLibrary0(Runtime.java:870)
at java.lang.System.loadLibrary(System.java:1122)
at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:976)
at org.bytedeco.javacpp.Loader.load(Loader.java:777)
at org.bytedeco.javacpp.Loader.load(Loader.java:684)
at org.nd4j.nativeblas.Nd4jCuda.(Nd4jCuda.java:10)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.bytedeco.javacpp.Loader.load(Loader.java:739)
at org.bytedeco.javacpp.Loader.load(Loader.java:684)
at org.nd4j.nativeblas.Nd4jCuda$NativeOps.(Nd4jCuda.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)
… 96 more
Caused by: java.lang.UnsatisfiedLinkError: /home/uXXX/.javacpp/cache/libjnind4jcuda.so/libjnind4jcuda.so: libnd4jcuda.so: cannot open shared object file: No such file or directory
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
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)
… 107 more