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ggml-cuda : update cudaLaunchKernelEx check to 12.0#3829

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ggml-cuda : update cudaLaunchKernelEx check to 12.0#3829
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@danbev danbev commented May 27, 2026

This commit updates the CUDART check to 12.8 instead of the current 11.8.

The motivation for this is that currently whisper.cpp CI is failing when building 11.8.0, with the following error:

ggml\src\ggml-cuda\common.cuh(1568): error: identifier "cudaLaunchKernelEx" is undefined

It looks like cudaLaunchKernelEx was introduced in CUDA 12.0 which would therefor be the reason for this failure.

Refs: https://github.com/ggml-org/whisper.cpp/actions/runs/26493577141/job/78016424109?pr=3735#step:11:879

This commit updates the CUDART check to 12.8 instead of the current
11.8.

The motivation for this is that currently whisper.cpp CI is failing when
building 11.8.0, with the following error:
```console
ggml\src\ggml-cuda\common.cuh(1568): error: identifier "cudaLaunchKernelEx" is undefined
```
It looks like cudaLaunchKernelEx was introduced in CUDA 12.0 which would
therefor be the reason for this failure.

Refs: https://github.com/ggml-org/whisper.cpp/actions/runs/26493577141/job/78016424109?pr=3735#step:11:879
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danbev commented May 27, 2026

It looks like this fixes windows-cublas (Release, x64, ON, ON, 11.8.0).

I'm looking into the ggml-ci-mac-vulkan failure. This seems to be caused by missing spirv-headers on the self hosted runner. Georgi has installed them and I'll re-run the failing tests shortly (works now).

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danbev commented May 28, 2026

Closing this in favor of ggml-org/llama.cpp#23742 which will be available after the next ggml sync.

@danbev danbev closed this May 28, 2026
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