laro
(amit)
October 26, 2022, 6:04am
1
'm running with the following environment:
Windows 10
python 3.8.10
CUDA Version: 11.3 (according to `nvidia-smi`)
torch: 1.12.1
CUDNN_MAJOR 8 (according to `cudnn_version`)
CUDNN_MINOR 1
I’m running the following code:
import torch
print(f"Version: {torch.__version__}, GPU: {torch.cuda.is_available()}, NUM_GPU: {torch.cuda.device_count()}")
And I’m getting:
Version: 1.12.1+cpu, GPU: False, NUM_GPU: 0
According to: https://pytorch.org/ it seems the right version.
So, Why I can’t use GPU when using torch, What is wrong ?
Why torch version show CPU ? how can I install the GPU version of torch ?
rigved
(Rigved Rakshit)
April 24, 2023, 9:40pm
3
I think the installation instruction on this page are incorrect: Start Locally | PyTorch . I selected “Compute Platform: CUDA 11.8” and it still asked me to install the pytorch
package, which is the CPU-only version, and that in turn forces the torchaudio
and torchvision
packages to be CPU-only as well. The correct way to install the GPU version is with this command (note the missing pytorch
package from the command):
conda install torchvision torchaudio pytorch-cuda=11.8 -c pytorch -c nvidia
I don’t think the command is wrong as a directly copy/paste works for me:
conda install pytorch torchvision torchaudio pytorch-cuda=11.8 -c pytorch -c nvidia
...
The following packages will be downloaded:
package | build
---------------------------|-----------------
cryptography-40.0.2 | py38h3d167d9_0 1.4 MB conda-forge
filelock-3.12.0 | pyhd8ed1ab_0 14 KB conda-forge
lcms2-2.15 | hfd0df8a_0 235 KB conda-forge
libcufile-1.6.1.9 | 0 764 KB nvidia
libcurand-10.3.2.106 | 0 51.7 MB nvidia
libhwloc-2.9.1 | hd6dc26d_0 2.5 MB conda-forge
libwebp-base-1.3.0 | h0b41bf4_0 348 KB conda-forge
libxml2-2.10.4 | hfdac1af_0 697 KB conda-forge
llvm-openmp-16.0.2 | h4dfa4b3_0 40.6 MB conda-forge
mpfr-4.2.0 | hb012696_0 616 KB conda-forge
mpmath-1.3.0 | pyhd8ed1ab_0 428 KB conda-forge
networkx-3.1 | pyhd8ed1ab_0 1.4 MB conda-forge
numpy-1.24.3 | py38h59b608b_0 6.4 MB conda-forge
openssl-3.1.0 | hd590300_2 2.5 MB conda-forge
pytorch-2.0.0 |py3.8_cuda11.8_cudnn8.7.0_0 1.41 GB pytorch
pytorch-cuda-11.8 | h7e8668a_3 7 KB pytorch
pytorch-mutex-1.0 | cuda 3 KB pytorch
sympy-1.11.1 | pypyh9d50eac_103 4.6 MB conda-forge
tbb-2021.9.0 | hf52228f_0 1.5 MB conda-forge
torchaudio-2.0.0 | py38_cu118 7.6 MB pytorch
torchtriton-2.0.0 | py38 62.6 MB pytorch
torchvision-0.15.0 | py38_cu118 38.9 MB pytorch
typing_extensions-4.5.0 | pyha770c72_0 31 KB conda-forge
------------------------------------------------------------
Total: 1.63 GB
As you can see the right packages with CUDA 11.8 are installed.
rigved
(Rigved Rakshit)
April 25, 2023, 1:46pm
5
Interesting! There was probably another package that was forcing the install of pytorch-1.13
(CPU-version) when I ran that command yesterday. I tried this command again in a fresh Anaconda environment and that’s working as you mentioned.