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Sep 2, 2024 · Fundamentals

Understanding DMA and the RIFFA Architecture: Block vs Scatter‑Gather

This article explains DMA fundamentals, compares Block DMA and Scatter‑Gather DMA step by step, and evaluates the open‑source RIFFA PCIe framework, including its hardware flow, software components, board‑level performance tests, features, drawbacks, and licensing terms.