# IRQ Shared Memory Demo – Host Side The host application publishes timestamped packets into a shared-memory window, signals the remote processor via IPI, and waits for the echoed payloads to measure round-trip latency. After the final message it sends a `"shutdown"` marker to stop the remote task. ## Supported Platforms - [AMD Linux Userspace](../../../machine/host/amd_linux_userspace/README.md) Platform-specific prerequisites, build instructions, and troubleshooting tips live in the linked machine documentation.