OSError about libcurand.so.10 while importing torch to Xavier

[vesvenh]

When I installed torch according to the instructions, I encountered some problems. The following is the relevant version information of Xavier I currently use：

nvidia@Xavier:~$ cat /etc/nv_tegra_release

# R32 (release), REVISION: 5.1, GCID: 27362550, BOARD: t186ref, EABI: aarch64, DATE: Wed May 19 18:16:00 UTC 2021

nvidia@Xavier:~$ nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2019 NVIDIA Corporation
Built on Wed_Oct_23_21:14:42_PDT_2019
Cuda compilation tools, release 10.2, V10.2.89

The version of torch I installed is pytorch v1.7.0.
When I check the torch installation, python reports the following error:

>>> import torch
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/nvidia/.local/lib/python3.6/site-packages/torch/__init__.py", line 189, in <module>
    _load_global_deps()
  File "/home/nvidia/.local/lib/python3.6/site-packages/torch/__init__.py", line 142, in _load_global_deps
    ctypes.CDLL(lib_path, mode=ctypes.RTLD_GLOBAL)
  File "/usr/lib/python3.6/ctypes/__init__.py", line 348, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: libcurand.so.10: cannot open shared object file: No such file or directory

Libcurand.so.10 does not seem to be installed in my Xavier. I found that the previous discussion on the forum did not involve jetpack4.5.1, so I would like to know whether I also encountered the problem of version adaptation. Looking forward to an answer.

[AastaLLL]

Hi,

Which PyTorch package do you install?
Could you try the package shared in the below topic?

PyTorch for Jetson

Below are pre-built PyTorch pip wheel installers for Jetson Nano, TX1/TX2, Xavier, and Orin with JetPack 4.2 and newer. Download one of the PyTorch binaries from below for your version of JetPack, and see the installation instructions to run on your Jetson. These pip wheels are built for ARM aarch64 architecture, so run these commands on your Jetson (not on a host PC). You can also use the pre-built l4t-pytorch and l4t-ml container images and Dockerfiles. PyTorch pip wheels JetPack 5

PyTo…

Thanks.

[vesvenh]

I have downloaded the pytorch package on the above link page, including v1.9.0, v1.8.0 and v1.7.0, but always reported the previous error:

OSError: libcurand.so.10: cannot open shared object file: No such file or directory

Thanks

[dusty_nv]

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks

Hi @vesvenh, you should still have a libcurand.so.10 symbolic link on your system:

ls -ll /usr/local/cuda-10.2/targets/aarch64-linux/lib/libcurand*

lrwxrwxrwx 1 root root       15 Oct 29  2019 /usr/local/cuda-10.2/targets/aarch64-linux/lib/libcurand.so -> libcurand.so.10
lrwxrwxrwx 1 root root       22 Oct 29  2019 /usr/local/cuda-10.2/targets/aarch64-linux/lib/libcurand.so.10 -> libcurand.so.10.1.2.89
-rw-r--r-- 1 root root 62596184 Oct 29  2019 /usr/local/cuda-10.2/targets/aarch64-linux/lib/libcurand.so.10.1.2.89
-rw-r--r-- 1 root root 62751508 Oct 29  2019 /usr/local/cuda-10.2/targets/aarch64-linux/lib/libcurand_static.a

Can you confirm that you have a similar setup?