[JAX SC] Parallelize device loop for extraction, sorting, grouping, bucketing and buffer filling. #540
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…ucketing and buffer filling. * `9.81%` geomean reduction (`~11%` with FDO) in wall time with `0.97%` CPU time increase and `5.31%` cycles reduction. * Use separate pool to avoid deadlocks. The fixed cost for scheduling should be less than 0.1% * Add default constructible objects for parallelization. PiperOrigin-RevId: 826509091
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[JAX SC] Parallelize device loop for extraction, sorting, grouping, bucketing and buffer filling.
9.81%geomean reduction (~11%with FDO) in wall time with0.97%CPU time increase and5.31%cycles reduction.