Chapter 9 W0 capture
Date/time: 2026-10-22 13:37 local (Asia/Bangkok)
Machine: Apple M3; macOS 27.0.1 (Build 26A434)
Load before and after: 4.36, 4.33, 4.64; uptime 17 days, 4:59
Command:
nice -n 10 swift code/examples/ch09-launch.swift
Output:
toy-only Metal launch test: synthetic data, no model
device: Apple M3; macOS: Version 27.0.1 (Build 26A434)
1000 dispatches: median-of-7 paired GPU time 2.810417 ms; checksum 1000
1 dispatch / 1000 writes: median-of-7 paired GPU time 0.006125 ms; checksum 1000
No model loaded; no inference run. Seven alternating paired runs after warm-up. The output is a toy launch comparison, not an engine timing. GPU idle-gate reading was not recorded.
