Feature : Add SYCL runtime support

CMakeLists.txt

@@ -3,15 +3,15 @@
 #   For  GCC: `cmake -B build . && cmake --build build`
 #   For MSVC: `cmake -B build . && cmake --build build --config Release`
 # You can also use the following options and variables
-#  - COMPUTE_BACKEND: Set to `cpu`, `cuda`, or `mps` to select the backend
+#  - COMPUTE_BACKEND: Set to `cpu`, `cuda`, `mps`, or `sycl` to select the backend
 #  - NO_CUBLASLT: Default OFF, will skip building/linking CUBLASLT support
 #  - CUDA_VERSION: The expected CUDA version, for sanity checking. The actual version
 #                  is whatever CMake finds on your path.
 #  - COMPUTE_CAPABILITY: Which GPU Arch/Compute codes to provide to NVCC.
 #                        Separate by semicolons, i.e. `-DCOMPUTE_CAPABILITY=89;90`
 #                        Check your compute capability here: https://developer.nvidia.com/cuda-gpus
 #  - PTXAS_VERBOSE: Pass the `-v` option to the PTX Assembler
-cmake_minimum_required(VERSION 3.22.1)
+cmake_minimum_required(VERSION 3.20.4)
 
 project(bitsandbytes LANGUAGES CXX)
 
@@ -28,11 +28,13 @@ set(CPP_FILES csrc/common.cpp csrc/cpu_ops.cpp csrc/pythonInterface.cpp)
 set(CUDA_FILES csrc/ops.cu csrc/kernels.cu)
 set(MPS_FILES csrc/mps_ops.mm)
 set(METAL_FILES csrc/mps_kernels.metal)
+set(SYCL_FILES csrc/sycl/ops.cpp csrc/sycl/kernels.cpp)
+
 # C++ sources are always included
 list(APPEND SRC_FILES ${CPP_FILES})
 
-set(COMPUTE_BACKEND "cpu" CACHE STRING "The compute backend to use (cpu, cuda, mps)")
-set_property(CACHE COMPUTE_BACKEND PROPERTY STRINGS cpu cuda mps)
+set(COMPUTE_BACKEND "cpu" CACHE STRING "The compute backend to use (cpu, cuda, mps, sycl)")
+set_property(CACHE COMPUTE_BACKEND PROPERTY STRINGS cpu cuda mps sycl)
 option(PTXAS_VERBOSE "Pass through -v flag to PTX Assembler" OFF)
 
 if(APPLE)
@@ -50,16 +52,23 @@ if(${COMPUTE_BACKEND} STREQUAL "cuda")
     option(NO_CUBLASLT "Disable CUBLAS" OFF)
     set(BUILD_CUDA ON)
     set(BUILD_MPS OFF)
+    set(BUILD_SYCL OFF)
     message(STATUS "NO_CUBLASLT := ${NO_CUBLASLT}")
 elseif(${COMPUTE_BACKEND} STREQUAL "mps")
     if(NOT APPLE)
         message(FATAL_ERROR "MPS is only supported on macOS" )
     endif()
     set(BUILD_CUDA OFF)
     set(BUILD_MPS ON)
+    set(BUILD_SYCL OFF)
+elseif(${COMPUTE_BACKEND} STREQUAL "sycl")
+    set(BUILD_CUDA OFF)
+    set(BUILD_SYCL ON)
+    set(BUILD_MPS OFF)
 else()
     set(BUILD_CUDA OFF)
     set(BUILD_MPS OFF)
+    set(BUILD_SYCL OFF)
 endif()
 
 
@@ -177,12 +186,28 @@ elseif(BUILD_MPS)
                 COMMENT "Compiling Metal kernels"
                 VERBATIM)
     add_custom_target(metallib DEPENDS "bitsandbytes/bitsandbytes.metallib")
+elseif(BUILD_SYCL)
+    if ( NOT DEFINED ENV{ONEAPI_ROOT})
+        message(FATAL_ERROR "Not detect ENV {ONEAPI_ROOT}, please install oneAPI & source it, like: source /opt/intel/oneapi/setvars.sh")
+    endif()
+    find_package(IntelSYCL REQUIRED)
+    set(CMAKE_CXX_STANDARD 17)
+    add_compile_options(-I./) #include DPCT
+    add_compile_options(-I/${SYCL_INCLUDE_DIR})
+
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-narrowing")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsycl -L${MKLROOT}/lib")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsycl-targets=spir64 -L${MKLROOT}/lib")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ferror-limit=590")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
+    list(APPEND SRC_FILES ${SYCL_FILES})
+
 else()
     string(APPEND BNB_OUTPUT_NAME "_cpu")
     set(GPU_SOURCES)
 endif()
-
-
+
 if(WIN32)
     # Export all symbols
     set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
@@ -195,9 +220,12 @@ endif()
 
 set_source_files_properties(${CPP_FILES} PROPERTIES LANGUAGE CXX)
 add_library(bitsandbytes SHARED ${SRC_FILES})
-target_compile_features(bitsandbytes PUBLIC cxx_std_14)
-target_include_directories(bitsandbytes PUBLIC csrc include)
-
+if(BUILD_SYCL)
+    target_compile_features(bitsandbytes PUBLIC cxx_std_17)
+else()
+    target_compile_features(bitsandbytes PUBLIC cxx_std_14)
+endif()
+target_include_directories(bitsandbytes PUBLIC csrc csrc/sycl include)
 
 if(BUILD_CUDA)
     target_include_directories(bitsandbytes PUBLIC ${CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES})
@@ -218,6 +246,9 @@ if(BUILD_MPS)
     target_link_libraries(bitsandbytes objc "-framework Foundation" "-framework Metal" "-framework MetalPerformanceShaders" "-framework MetalPerformanceShadersGraph")
 endif()
 
+if(BUILD_SYCL)
+    target_link_libraries(bitsandbytes PUBLIC OpenCL mkl_core pthread m dl mkl_sycl_blas mkl_intel_ilp64 mkl_tbb_thread onednn mkl_dnn)
+endif()
 if(WIN32)
     set_target_properties(bitsandbytes PROPERTIES PREFIX "lib")
 endif()