# SameDiff example MNISTCNN fails for Cuda, jnicudart.dll **URL:** \ **Category:** SameDiff\ **Created:** [October 19, 2021, 9:29pm UTC](https://community.konduit.ai/t/samediff-example-mnistcnn-fails-for-cuda-jnicudart-dll/1649 "2021-10-19T21:29:22Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![craig88](https://avatars.discourse-cdn.com/v4/letter/c/b782af/32.png) [@craig88](https://community.konduit.ai/u/craig88)\ **Post date:** [October 19, 2021, 9:29pm UTC](https://community.konduit.ai/t/samediff-example-mnistcnn-fails-for-cuda-jnicudart-dll/1649/1 "2021-10-19T21:29:22Z")
The CPU version ran fine. I change to: \nd4j-cuda-11.2-platform\ mvn clean package gives error: ```auto [INFO] Running org.nd4j.examples.samediff.QuickTest Begin running Ex1_SameDiff_Basics java.lang.UnsatisfiedLinkError: C:\Users\craig\.javacpp\cache\cuda-11.2-8.1-1.5.5-windows-x86_64.jar\org\bytedeco\cuda\windows-x86_64\jnicudart.dll: Can't find dependent libraries at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1934) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1817) at java.lang.Runtime.load0(Runtime.java:809) at java.lang.System.load(System.java:1086) at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:1668) at org.bytedeco.javacpp.Loader.load(Loader.java:1328) at org.bytedeco.javacpp.Loader.load(Loader.java:1132) at org.bytedeco.cuda.global.cudart.(cudart.java:14) at org.nd4j.linalg.jcublas.JCublasBackend.canRun(JCublasBackend.java:67) at org.nd4j.linalg.jcublas.JCublasBackend.isAvailable(JCublasBackend.java:52) at org.nd4j.linalg.factory.Nd4jBackend.load(Nd4jBackend.java:160) at org.nd4j.linalg.factory.Nd4j.initContext(Nd4j.java:5092) at org.nd4j.linalg.factory.Nd4j.(Nd4j.java:270) at org.nd4j.examples.samediff.quickstart.basics.Ex1_SameDiff_Basics.main(Ex1_SameDiff_Basics.java:54) at org.nd4j.examples.samediff.QuickTest.test(QuickTest.java:14) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:688) at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84) at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115) at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:210) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:206) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:131) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:65) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.util.ArrayList.forEach(ArrayList.java:1257) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.util.ArrayList.forEach(ArrayList.java:1257) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220) at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:188) at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128) at org.apache.maven.surefire.junitplatform.JUnitPlatformProvider.execute(JUnitPlatformProvider.java:188) at org.apache.maven.surefire.junitplatform.JUnitPlatformProvider.invokeAllTests(JUnitPlatformProvider.java:154) at org.apache.maven.surefire.junitplatform.JUnitPlatformProvider.invoke(JUnitPlatformProvider.java:128) at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:428) at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:162) at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:562) at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:548) 16:53:33.281 [main] WARN org.nd4j.linalg.factory.Nd4jBackend - Skipped [JCublasBackend] backend (unavailable): java.lang.UnsatisfiedLinkError: C:\Users\craig\.javacpp\cache\cuda-11.2-8.1-1.5.5-windows-x86_64.jar\org\bytedeco\cuda\wi ndows-x86_64\jnicudart.dll: Can't find dependent libraries ``` Consulting the [backend page](https://deeplearning4j.konduit.ai/multi-project/explanation/configuration/backends), the link ‘see our page on cudnn’ did not work. The last tip ‘You have a jar file that doesn’t contain service loader files’ cannot be performed because the jar was not generated mvn -v output: ```auto Picked up _JAVA_OPTIONS: -Djava.net.preferIPv4Stack=true Apache Maven 3.8.1 (05c21c65bdfed0f71a2f2ada8b84da59348c4c5d) Maven home: C:\apache-maven-3.8.1\bin\.. Java version: 1.8.0_241, vendor: Oracle Corporation, runtime: C:\Program Files\Java\jdk1.8.0_241\jre Default locale: en_US, platform encoding: Cp1252 OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows" ``` nvidea-smi output: ```auto C:\Users\craig>nvidia-smi Tue Oct 19 17:13:54 2021 +-----------------------------------------------------------------------------+ | NVIDIA-SMI 466.18 Driver Version: 466.18 CUDA Version: 11.3 | |-------------------------------+----------------------+----------------------+ | GPU Name TCC/WDDM | Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. | | | | MIG M. | |===============================+======================+======================| | 0 NVIDIA GeForce ... WDDM | 00000000:01:00.0 Off | N/A | | N/A 42C P8 12W / N/A | 161MiB / 8192MiB | 0% Default | | | | N/A | +-------------------------------+----------------------+----------------------+ +-----------------------------------------------------------------------------+ | Processes: | | GPU GI CI PID Type Process name GPU Memory | | ID ID Usage | |=============================================================================| | No running processes found | +-----------------------------------------------------------------------------+ ``` ---
**Author:** ![agibsonccc](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.konduit.ai/agibsonccc/32/697_2.png) [@agibsonccc](https://community.konduit.ai/u/agibsonccc)\ **Post date:** [October 19, 2021, 10:15pm UTC](https://community.konduit.ai/t/samediff-example-mnistcnn-fails-for-cuda-jnicudart-dll/1649/2 "2021-10-19T22:15:00Z")
@craig88 you are using cuda 11.3 according to nvidia-smi. Cuda versions need to be exact matches in order to work properly. ---
**Author:** ![craig88](https://avatars.discourse-cdn.com/v4/letter/c/b782af/32.png) [@craig88](https://community.konduit.ai/u/craig88)\ **Post date:** [October 20, 2021, 12:54pm UTC](https://community.konduit.ai/t/samediff-example-mnistcnn-fails-for-cuda-jnicudart-dll/1649/3 "2021-10-20T12:54:04Z")
I down graded to [cuda 11.2](https://developer.nvidia.com/cuda-11.2.0-download-archive) and that fixed it. Strangely, nvidia-smi still reports version 11.3 but ‘nvcc --version’ reports the correct version 11.2