rename oneapi->sycl; remove backend; add tests for multiclass obj

Author: Dmitry Razdoburdin

CMakeLists.txt

@@ -86,7 +86,7 @@ option(PLUGIN_DENSE_PARSER "Build dense parser plugin" OFF)
 option(PLUGIN_RMM "Build with RAPIDS Memory Manager (RMM)" OFF)
 option(PLUGIN_FEDERATED "Build with Federated Learning" OFF)
 ## TODO: 1. Add check if DPC++ compiler is used for building
-option(PLUGIN_UPDATER_ONEAPI "DPC++ updater" OFF)
+option(PLUGIN_SYCL "SYCL plugin" OFF)
 option(ADD_PKGCONFIG "Add xgboost.pc into system." ON)
 
 #-- Checks for building XGBoost
@@ -264,14 +264,14 @@ if (PLUGIN_RMM)
   get_target_property(rmm_link_libs rmm::rmm INTERFACE_LINK_LIBRARIES)
 endif (PLUGIN_RMM)
 
-if (PLUGIN_UPDATER_ONEAPI)
+if (PLUGIN_SYCL)
   set(CMAKE_CXX_LINK_EXECUTABLE
       "icpx <FLAGS> <CMAKE_CXX_LINK_FLAGS> -qopenmp <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
   set(CMAKE_CXX_CREATE_SHARED_LIBRARY 
       "icpx <CMAKE_SHARED_LIBRARY_CXX_FLAGS> -qopenmp <LANGUAGE_COMPILE_FLAGS> \
       <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> <SONAME_FLAG>,<TARGET_SONAME> \
       -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
-endif (PLUGIN_UPDATER_ONEAPI)
+endif (PLUGIN_SYCL)
 
 #-- library
 if (BUILD_STATIC_LIB)

plugin/CMakeLists.txt

@@ -2,37 +2,37 @@ if (PLUGIN_DENSE_PARSER)
   target_sources(objxgboost PRIVATE ${xgboost_SOURCE_DIR}/plugin/dense_parser/dense_libsvm.cc)
 endif (PLUGIN_DENSE_PARSER)
 
-if (PLUGIN_UPDATER_ONEAPI)
+if (PLUGIN_SYCL)
   set(CMAKE_CXX_COMPILER "icpx")
-  add_library(oneapi_plugin OBJECT
-    ${xgboost_SOURCE_DIR}/plugin/updater_oneapi/hist_util_oneapi.cc
-    ${xgboost_SOURCE_DIR}/plugin/updater_oneapi/regression_obj_oneapi.cc
-    ${xgboost_SOURCE_DIR}/plugin/updater_oneapi/multiclass_obj_oneapi.cc
-    ${xgboost_SOURCE_DIR}/plugin/updater_oneapi/updater_quantile_hist_oneapi.cc
-    ${xgboost_SOURCE_DIR}/plugin/updater_oneapi/device_manager_oneapi.cc
-    ${xgboost_SOURCE_DIR}/plugin/updater_oneapi/predictor_oneapi.cc)
-  target_include_directories(oneapi_plugin
+  add_library(plugin_sycl OBJECT
+    ${xgboost_SOURCE_DIR}/plugin/sycl/common/hist_util.cc
+    ${xgboost_SOURCE_DIR}/plugin/sycl/objective/regression_obj.cc
+    ${xgboost_SOURCE_DIR}/plugin/sycl/objective/multiclass_obj.cc
+    ${xgboost_SOURCE_DIR}/plugin/sycl/tree/updater_quantile_hist.cc
+    ${xgboost_SOURCE_DIR}/plugin/sycl/device_manager.cc
+    ${xgboost_SOURCE_DIR}/plugin/sycl/predictor/predictor.cc)
+  target_include_directories(plugin_sycl
     PRIVATE
     ${xgboost_SOURCE_DIR}/include
     ${xgboost_SOURCE_DIR}/dmlc-core/include
     ${xgboost_SOURCE_DIR}/rabit/include)
-  target_compile_definitions(oneapi_plugin PUBLIC -DXGBOOST_USE_ONEAPI=1)
-  target_link_libraries(oneapi_plugin PUBLIC -fsycl)
-  set_target_properties(oneapi_plugin PROPERTIES
+  target_compile_definitions(plugin_sycl PUBLIC -DXGBOOST_USE_SYCL=1)
+  target_link_libraries(plugin_sycl PUBLIC -fsycl)
+  set_target_properties(plugin_sycl PROPERTIES
     COMPILE_FLAGS -fsycl
     CXX_STANDARD 17
     CXX_STANDARD_REQUIRED ON
     POSITION_INDEPENDENT_CODE ON)
   if (USE_OPENMP)
     find_package(OpenMP REQUIRED)
-    set_target_properties(oneapi_plugin PROPERTIES
+    set_target_properties(plugin_sycl PROPERTIES
     COMPILE_FLAGS "-fsycl -qopenmp")
   endif (USE_OPENMP)
-  # Get compilation and link flags of oneapi_plugin and propagate to objxgboost
-  target_link_libraries(objxgboost PUBLIC oneapi_plugin)
-  # Add all objects of oneapi_plugin to objxgboost
-  target_sources(objxgboost INTERFACE $<TARGET_OBJECTS:oneapi_plugin>)
-endif (PLUGIN_UPDATER_ONEAPI)
+  # Get compilation and link flags of plugin_sycl and propagate to objxgboost
+  target_link_libraries(objxgboost PUBLIC plugin_sycl)
+  # Add all objects of plugin_sycl to objxgboost
+  target_sources(objxgboost INTERFACE $<TARGET_OBJECTS:plugin_sycl>)
+endif (PLUGIN_SYCL)
 
 # Add the Federate Learning plugin if enabled.
 if (PLUGIN_FEDERATED)