Merge commit '33ca0dcb9d78c7c3a3b543db4c5fc9182abfe519' into concedo_experimental

# Conflicts:
#	docs/backend/SYCL.md
#	docs/build.md
#	docs/ops.md
#	docs/ops/SYCL.csv
#	ggml/src/ggml-cuda/ggml-cuda.cu
#	ggml/src/ggml-hip/CMakeLists.txt
#	ggml/src/ggml-opencl/fa_tune.h
#	ggml/src/ggml-opencl/ggml-opencl.cpp
#	ggml/src/ggml-opencl/kernels/flash_attn_f16.cl
#	ggml/src/ggml-opencl/kernels/flash_attn_f32.cl
#	ggml/src/ggml-opencl/kernels/flash_attn_f32_f16.cl
#	ggml/src/ggml-opencl/kernels/flash_attn_f32_q4_0.cl
#	ggml/src/ggml-opencl/kernels/flash_attn_f32_q8_0.cl
#	ggml/src/ggml-opencl/kernels/mul_mv_f16_f32_l4.cl
#	ggml/src/ggml-sycl/backend.hpp
#	ggml/src/ggml-sycl/common.hpp
#	ggml/src/ggml-sycl/cpy.cpp
#	ggml/src/ggml-sycl/cpy.hpp
#	ggml/src/ggml-sycl/dmmv.cpp
#	ggml/src/ggml-sycl/element_wise.cpp
#	ggml/src/ggml-sycl/ggml-sycl.cpp
#	ggml/src/ggml-sycl/presets.hpp
#	src/llama-graph.cpp
#	src/llama-kv-cache.cpp

src/llama-model.cpp

@@ -1091,6 +1091,8 @@ static buft_list_t make_gpu_buft_list(ggml_backend_dev_t dev, llama_split_mode s
             if (buft != nullptr) {
                 buft_list.emplace_back(dev, buft);
             }
+        } else {
+            throw std::runtime_error(format("device %s does not support split buffers", ggml_backend_dev_name(dev)));
         }
     }