Runtime error with Jetson Xavier NX

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
#1

I have a project taking use of cuda/cudnn that runs well with Jetson Nano + carrier board A02. The same project is able to compile with Jetson Xavier NX + carrier board B01, however, it reports the following run time error:

Unhandled exception in worker thread: basic_string::_M_construct null not valid

I’m not sure where I should trace this issue. Here is the difference of the two sets:

=====Jetson Nano + Carrier Board A02=====
JP 4.2.3
CUDA Runtime version: 10.0.0
Cudnn version: 7.3.1
Latest version of CUDA supported by the driver: 10.0.0
GPU: NVIDIA Tegra X1
GPU memory: 3.87164 Gb
GPU clock frequency: 921.6 MHz
GPU compute capability: 5.3

===== Jetson Xavier NX + Carrier Board B01=====
JP 4.4
CUDA Runtime version: 10.2.0
Cudnn version: 8.0.0
Latest version of CUDA supported by the driver: 10.2.0
GPU: Xavier
GPU memory: 7.58946 Gb
GPU clock frequency: 1109 MHz
GPU compute capability: 7.2

Any advice is appreciated. Thanks.
Colin

Mask-RCNN on Jetson Xavier NX issue 'std::logic_error'
#2

Hi Colin,

Xavier’s GPU capacity is sm=72.
So you will need to add the correct architecture to generate a Xavier runnable kernel.
Could you check if the sm=72 compute capacity is added when compiling the app for Xavier NX?

#4

Thank you kayccc. I added “-arch=compute_72 -code=sm_72” to nvcc but still got the same runtime error.

#5

Hi kayccc, I wonder if Nvidia would be able to provide an option to downgrade cuda/cudnn. Since Jetson Xavier AGX can run with lower version of cuda/cudnn so I expect Xavier NX would have no problem.

Thanks.
Colin

#6

Hi,

There are some dependencies between libraries and OS.
So you cannot just downgrade the CUDA version without reflashing.

Unhandled exception in worker thread: basic_string::_M_construct null not valid

The error looks like a basic C++ error, not from CUDA side.
A possible cause is that the g++/gcc version is upgraded and some limitation leads to the issue.

Could you check if this page helps first?

Thanks.
A po

#7

Hi AastaLLL,

Thanks for your advice. I tried compiling with clang++6.0, g++7, and g++8, they all have the same run time error. But if I don’t run my neural networks on cuda/cudnn backend and choose to run on CPU only, it works just fine. That seems to point to cuda/cudnn runtime libraries that could have something not thread safe.

This is what I have so far:

It works on Nano with JP 4.3/CUDA10.0/CUDNN7.3
It doesn’t work on NX with JP4.4/CUDA10.2/CUDNN8.0
It works on NX with JP4.4 as long as not on CUDA/CUDNN backend

I’ll later try on cuda/cudnn backend using JP 4.3 with Xavier AGX see how it goes.

Thanks.
Colin

#8

Just found a work-around for this issue. Here is the steps:

[1] Keep cuda-10.2 but force remove libcudnn8 and libcudnn8-dev
[2] Follow this link to install libcudnn7 for cuda-10.2

[3] Now my neural network is able to run on cuda10.2/cudnn7 backend.

Looks to me there may be something wrong with cudnn 8.0.

Thanks.
Colin

#9

Hi,

Usually, we don’t recommend to use the package outside from sdkmanager.
Since that most CUDA related library have dependencies on GPU driver.

So this may limit you to use TensorRT, TensorFlow, deepstream, … . library.
Would you mind to share your source with us so we can check it further?

Thanks.

#12