AN 796: Cyclone® V and Arria® V SoC Device Design Guidelines

ID 683360
Date 3/30/2022
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3.6.3. Data Size Impacts ACP Performance

Performance explorations of accelerators using ACP show that as size of packets transferred by AXI* master via the ACP port increases the accelerator performance increases but only up to a point. After that point, it is no longer possible to cache the entire data packet, and the accelerator suffers performance degradation.

GUIDELINE: Use ACP for managing coherency for small data size accesses, manage coherency for large data in software.