* Add CMake option to use bundled gtest from dmlc-core, so that it is easy to build XGBoost with gtest on Windows * Consistently apply OpenMP flag to all targets. Force enable OpenMP when USE_CUDA is turned on. * Insert vcomp140.dll into Windows wheels * Add C++ and Python tests for CPU and GPU targets (CUDA 9.0, 10.0, 10.1) * Prevent spurious msbuild failure * Add GPU tests * Upgrade dmlc-core
This folder contains testcases for xgboost.