ImportError: cs149gpt/module_ref.so: undefined symbol

[BoL0150]

I am not a student at Stanford. When I ran this assignment on my computer (wsl2, ubuntu22.04), the following error occurred:

(cs149) libo@LAPTOP-VF5QU71L:~/cs149/cs149gpt$ python3 gpt149.py 4Daccess
Traceback (most recent call last):
  File "/home/libo/cs149/cs149gpt/gpt149.py", line 14, in <module>
    import module_ref as ms
ImportError: /home/libo/cs149/cs149gpt/module_ref.so: undefined symbol: _ZN2at4_ops5zeros4callEN3c108ArrayRefINS2_6SymIntEEENS2_8optionalINS2_10ScalarTypeEEENS6_INS2_6LayoutEEENS6_INS2_6DeviceEEENS6_IbEE`

My python version is 3.12.2，pytorch version is 2.2.2，cuda version is 12.3.0

[BoL0150]

this problem solved by changing pytorch version to 2.1.2

# ubuntu 22.04
# pip install torch==2.1.2

[YoungY620]

My problem is not solved with the solution proposed by @BoL0150 .....

I am using Ubuntu 24.04

I got this error:

ERROR: Could not find a version that satisfies the requirement torch==2.1.2 (from versions: 2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.4.0, 2.4.1, 2.5.0)
ERROR: No matching distribution found for torch==2.1.2

Maybe friends using ubuntu 24.04 should not waste time like me and just switch to ubuntu 22.04...

[hamsterjiang23]

PyTorch 2.3.0
Python 3.12(ubuntu22.04)
Cuda 12.1
has same issue

[hamsterjiang23]

My problem is not solved with the solution proposed by @BoL0150 .....

I am using Ubuntu 24.04

I got this error:

ERROR: Could not find a version that satisfies the requirement torch==2.1.2 (from versions: 2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.4.0, 2.4.1, 2.5.0)
ERROR: No matching distribution found for torch==2.1.2

Maybe friends using ubuntu 24.04 should not waste time like me and just switch to ubuntu 22.04...

Under ubuntu 22.04 has same issue

[hamsterjiang23]

My problem is not solved with the solution proposed by @BoL0150 .....

I am using Ubuntu 24.04

I got this error:

ERROR: Could not find a version that satisfies the requirement torch==2.1.2 (from versions: 2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.4.0, 2.4.1, 2.5.0)
ERROR: No matching distribution found for torch==2.1.2

Maybe friends using ubuntu 24.04 should not waste time like me and just switch to ubuntu 22.04...

PyTorch 2.1.2
Python 3.10(ubuntu22.04)
Cuda 11.8
Work

[IonMich]

For those who would prefer to create a conda environment, the following appears to work for all parts of this assignment:

conda create -n gpt149
conda activate gpt149
conda install pytorch==2.1.2 torchvision==0.16.2 torchaudio==2.1.2 cpuonly python=3.10 numpy=1.26 ninja tiktoken -c pytorch -c conda-forge

I.e. on top of following the official pytorch instructions for version 2.1.2, I had to specify python=3.10, set numpy to a version less than 2, and install ninja and tiktoken. The CUDA-enabled installation also works if you replace cpuonly with pytorch-cuda=11.8 and add -c nvidia. However this assignment specifies device = 'cpu', so CUDA is not necessary here.