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CUDA: enable FA for FP32 KV cache #16546

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CUDA: enable FA for FP32 KV cache #16546

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JohannesGaessler
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For #16531 .

Adds CUDA FlashAttention support for FP32 KV cache. The FP32 data is converted to FP16 for the kernel which is inefficient but simple.

@JohannesGaessler JohannesGaessler mentioned this pull request Oct 12, 2025
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@github-actions github-actions bot added Nvidia GPU Issues specific to Nvidia GPUs ggml changes relating to the ggml tensor library for machine learning labels Oct 12, 2025
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