# Lambda Stack version archive

## post by daryl149 on May 25, 2023

Hi, is there any way to install historical versions of the lambda stack? I am troubleshooting the latest install (which comes with CUDA 12.0) for something that works flawlessly on my machine running an earlier version of the lambda stack (that came with CUDA 11.6)

## post by corey on May 30, 2023

There are not currently historical versions of Lambda Stack available. For help with any Lambda Stack issues, please open a ticket at the following url.

[https://support.lambdalabs.com/hc/en-us/requests/new](https://support.lambdalabs.com/hc/en-us/requests/new)

## post by markd on Jun 13, 2023

The latest Lambda Stack comes with 525.116.04, which supports _up to_ CUDA 12.0.

The current CUDA in use is 11.8.

The Driver version is commonly newer than the CUDA version, as most issues are in CUDA versus the driver and the driver supports a few major versions back.

You can check the CUDA version typically with:

```
$ nvcc --version
```

Or from PyTorch:

```
$ python -c ‘import torch ; print("\nIs available: ", torch.cuda.is_available()) ; print("Pytorch CUDA Compiled version: ", torch._C._cuda_getCompiledVersion()) ; print("Pytorch version: ", torch.version) ; print("pytorch file: ", torch.file) ; num_of_gpus = torch.cuda.device_count(); print("Number of GPUs: ",num_of_gpus)’
```

To version your CUDA you can use a virtual environment or docker container.

I have a number of examples at:

[lambdalabs/documentation/software/examples/virtual-environments at main · markwdalton/lambdalabs · GitHub](https://github.com/markwdalton/lambdalabs/tree/main/documentation/software/examples/virtual-environments)

We should have better write up soon at ‘ [http://docs.lambdalabs.com/](http://docs.lambdalabs.com/)’