[wip] Use philox for faster sampling on GPU.#12223
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trivialfis wants to merge 1 commit into
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I think the speed won't make a difference as this is the simple linear generator being used currently but the quality of the random samples will be very much improved. Honestly we shouldn't be using LCGs at all. |
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This is available in C++ 26, cccl backports it. But we will need a newer CCCL for the
randomheader. Marking this PR as WIP since we don't have the latest CCCL for XGBoost.