AN 999: Drive-on-Chip with Functional Safety Design Example: Agilex™ 7 Devices

ID 823627
Date 7/04/2024
Public

Visible to Intel only — GUID: jnm1716374313991

Ixiasoft

Document Table of Contents

5.2.6. Core Isolation and Core Affinity

This system isolates design cores 2 and 3 for timing critical functions.. Core 2 runs the HPS safety function and serves the interrupt generated by the Interval timer. Core 3 is for the thread that does speed estimation. The Linux Kernel scheduler allocates other threads to core 1 and 0. Core isolation and core affinity ensures the timing critical parts of the application meet their deadlines (1 ms, safety response time). You can check the core allocation using the tool htop.

.

Figure 28. HTOP View The figure shows the intended core allocation for HPS safe application threads. The figure shows no other kernel or user-space application runs in core 2 or 3, only core 0 and 1 are available for the remainder of the applications and services.