onnxruntime

06e684c9 - Adding cuda kernel (optimized for sm80) for block-wise 4b quantized float 16 GEMM. (#18619)

Adding cuda kernel (optimized for sm80) for block-wise 4b quantized float 16 GEMM. (#18619) ### Description Adding CUDA kernel for block-wise 4b quantized float 16 GEMM, this is specially optimized for Nvidia Ampere GPUs. ### Motivation and Context Trying to improve quantized LLM inference performance on Nvidia Ampere GPUs ### Note: This is implemented by extending CUTLASS, so it has a hard dependency on CUTLASS. However, in current build system, loading of CUTLASS dependency is guarded with: (onnxruntime_USE_FLASH_ATTENTION OR onnxruntime_USE_MEMORY_EFFICIENT_ATTENTION) If both of these options are turned off, then compilation will fail. Why CUTLASS dependency is guarded at all? It's a header file only library that does not introduce any binary if not instantiated. What's the downside of removing all the guards and just include CUTLASS unconditionally?