Module 2 – CPU/GPU Core & Memory Mapping · 2
Virtual, physical, and device addresses
15-minute session: read for 3 minutes, trace for 3, experiment for 7, and complete the check for 2. Spend longer whenever you need.
A process uses virtual addresses. Page tables translate them subject to permissions. A device may use a DMA/IOMMU mapping rather than the same address. Never cast an arbitrary process pointer into a device address and assume it works. Draw the mappings, owners, access permissions, and lifetime of a buffer before designing an API.
Practice and evidence: Predict the example or draw its state transitions. Change one assumption, test the boundary, and record the actual result. Explain what this small model does not establish about a production system.
Practice and evidence
Keep three notes: your prediction, the actual result, and why they match or differ. The completion check grades understanding; the practice task builds skill.
Language reference: git.agilaos.com
Language reference: docs.nvidia.com
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