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Document the radix select algorithm steps for finding top-k elements.
- Replace parallel_reduce with direct bit manipulation to compute pivot (set undetermined bits to 1 to get upper bound of k-th element) - Sort top-k in scratch memory before copying to global memory - Merge two parallel_for loops into one - Remove unused find_result struct and reduction_identity specialization
Benchmark for measuring partial_sort and full_sort performance in CCM.
Replace Kokkos::single with parallel_for for better GPU performance.
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Summary
Benchmark Results (dango, N=10000, k=21)
GPU (RTX 3090)
CPU (OpenMP)
Test plan