Decoupled Vector Runahead (DVR) exploits massive amounts of memory-level parallelism to improve the performance of applications featuring indirect memory accesses by dynamically inferring loop bounds at run-time, recognizing striding loads, and speculatively vectorizing subsequent instructions that are part of an indirect chain. DVR runs as an on-demand, speculative, in-order, lightweight hardware subthread alongside the main thread within the core. DVR incurs a minimal hardware overhead while delivering a substantial performance boost.
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Naithani et al. (2024) studied this question.
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