4598eb080b
* sycl : add flash-attn support for head size 512 This patch extends the SYCL Flash Attention implementation to support head sizes (DKQ/DV) of 512. Changes: - Added DKQ/DV 512 cases to both tile and vector Flash Attention kernels. - Updated kernel selection logic to allow vector kernels for head sizes up to 512 (previously 256). - Removed unused/redundant AMD and RDNA-specific configuration functions in `fattn-tile.hpp`. - Refactored `ggml_backend_sycl_buffer_init_tensor` to use a switch statement for clearer tensor extra buffer initialization. - Added necessary template instances for the new 512 head size across various quantization types. * remove defunct mxfp4 reorder from setting buffer type |
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