boostorg / boostorg/compute

the peformance of radix sort is lower than cub or hipPRIM

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performance
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Description

if we have do some work to improve the performance of radix_sort_by_key( ), as i tested , the perf is 11ms per 1m element size. while ~1.15ms in rocmPRIM(OpenCL) and CUB(cuda) per 1M elements

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