# cuDNN not found in linux

**URL:** <https://community.konduit.ai/t/cudnn-not-found-in-linux/1203>\
**Category:** DL4J\
**Created:** [February 26, 2021, 2:38am UTC](https://community.konduit.ai/t/cudnn-not-found-in-linux/1203 "2021-02-26T02:38:56Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Yaqiang](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.konduit.ai/yaqiang/32/969_2.png) [@Yaqiang](https://community.konduit.ai/u/Yaqiang)\
**Post date:** [February 26, 2021, 2:38am UTC](https://community.konduit.ai/t/cudnn-not-found-in-linux/1203/1 "2021-02-26T02:38:56Z")

</div>

I am using Ubuntu 18.04.4 with cuda 10.2.89 and cudnn 7.6.5 installed.

```
(base) root@3e5fbe29c57d:/usr/local/cuda/lib64# cat /usr/local/cuda/include/cudnn.h | grep CUDNN_MAJOR -A 2
#define CUDNN_MAJOR 7
#define CUDNN_MINOR 6
#define CUDNN_PATCHLEVEL 5
--
#define CUDNN_VERSION (CUDNN_MAJOR * 1000 + CUDNN_MINOR * 100 + CUDNN_PATCHLEVEL)

#include "driver_types.h"

```

It is ok to use cuda as backend, but “org.deeplearning4j.nn.layers.convolution.ConvolutionLayer - cuDNN not found” message displayed when using ConvolutionLayer.

I tried several times for re-install cudnn (The installation of CuDNN is just copying some files), but the problem is still there. What can I do for next step? Thanks!