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48 lines
2.2 KiB
Markdown
48 lines
2.2 KiB
Markdown
# CUDA and Proprietary Nvidia GPU Drivers on RHEL 8
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Managing Nvidia software comes with its own set of challenges.
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For the most common cases are covered by our Puppet configuration.
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Those are discussed in the first chapter, more details you find more below.
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## Hiera Configuration
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Changes in Hiera are forwared by Puppet to the node, but **not applied**.
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They are applied on **reboot**.
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Alternatively you might execute `/opt/pli/libexec/ensure-nvidia-software` in a safe moment (no process using CUDA and the desktop will be restarted).
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### I need CUDA
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Set in Hiera `nvidia::cuda::install_software: true` and it will automatically install the suitable Nvidia drivers and newest possible CUDA version.
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To enable `nvidia_persistenced` you additionally need to set `nvidia::cuda::nvidia_persistenced::enable: true`.
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### I need a specific CUDA version
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Then you can additionally set `nvidia::cuda::version` to the desired version.
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The version must be fully specified (all three numbers, with X.Y.0 for the GA version).
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Note that newer CUDA versions do not support older drivers, for details see Table 3 in the [CUDA Release Notes](https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html).
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### I just need the Nvidia drivers
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Nothing needs to be done, they are installed by default when Nvidia GPUs or accelerators are found.
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### I do not want the Nvidia drivers
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Set in Hiera `nvidia::driver::enable: false`. Note this will be ignored if CUDA is enabled (see above).
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Note they do not get automatically removed when already installed. That you would need to do by hand.
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### I need the Nvidia drivers from a specific driver branch
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The driver branch can be selected in Hiera with `nvidia::driver::branch`. It will then use the latest driver version of that branch. Note that only production branches are available in the PSI package repository.
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### I need a Nvidia driver of a given version
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This is not recommended, still it is possible to do so by setting the exact driver version (X.Y.Z, excluding the package iteration number) in Hiera with `nvidia::driver::version`.
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If the driver version is too old, it will install an older kernel version and you will need a second reboot to activate it.
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## Versioning Mess
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## Manual Operation
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