SYCL. Refactor gradient calculation with HostDeviceVector

dmlc / xgboost

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SYCL. Refactor gradient calculation with HostDeviceVector #10922

Closed razdoburdin closed 1 month ago

razdoburdin commented 1 month ago

Hi, this PR refactors the SYCL implementation of objective functions. The use of HostDeviceVectorsimplifies the code and slightly improves performance by reducing unnecessary data copying.