Re: Software has to pay attention
It is also a boon for old-school programmers, who were brought up to think in clock cycles and who actually know how a processor works, and therefore how best to optimize code.
I liked Steve Gibson's description of his Inspectre tool. It is a 122KB (yes, KB) tool to detect Meltdown and Spectre vulnerabilities on Windows PCs (should also work with WINE for Mac and Linux). He moaned that, of the 122KB ,96KB was needed for the damned hi-res, "hi-color" icon that Windows requires.