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Programming and Computer Science
AVX-512 Programming: Extracting Column Subtotals from a Table
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[QUOTE="Vanadium 50, post: 6881991, member: 110252"] Now that AMD has annouced that Zen4 will support AVX-512, do you think it will gain in popularity, especially for consumer chips? One problem is that AVX-512 really shines in fused multiply-adds. It's 512 bits wide, not 64, so there's a factor of 8, and it takes half a clcok, so that's 16. But this runs into two problems - one is Amdahl's Law: if half your time is spent doing FMAs, an infinitely fast FMA buys you a factor of 2. The other is that GPUs are allready pretty good at FMAs. Related, if most CPUs don't have this feature, vendors won't code for it. [/QUOTE]
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AVX-512 Programming: Extracting Column Subtotals from a Table
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