https://huggingface.co/kernels/webgpu-kernels/com.microsoft.PackedMultiHeadAttention/resolve/v1/build/webgpu/bench.json
hf download hf://webgpu-kernels/com.microsoft.PackedMultiHeadAttention@v1/build/webgpu/bench.json
curl -L -o bench.json https://huggingface.co/kernels/webgpu-kernels/com.microsoft.PackedMultiHeadAttention/resolve/v1/build/webgpu/bench.json
