RKNN runtime
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- Diagnosing silent CPU fallback on RK3588 with RKNN PERF data
A Juejin article documents how to identify operators silently falling back from the RK3588 NPU to the CPU despite correct inference results. The author uses librknnrt's rknn_query(RKNN_QUERY_PERF_DETAIL) output, enabled with RKNN_FLAG_COLLECT_PERF_MASK, and classifies execution by CPU time share. On-device tests of YOLOv8n and YOLOv8s-seg were classified as NPU_ONLY, while the thresholds and broader conclusions remain the author's own methodology.
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