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A comment on Cannon Lake: Intel’s Forgotten Generation – Chips and Cheese. Parent comment

Re:Cannon Lake: Intel’s Forgotten Generation – Chips and Cheese by matja on Sunday November 20, 2022 @12:20PM (#33682977)
> The First Digit bears no connection to anything

One pattern is: If first digit is 3,4,5 then it has one AVX512 FMA unit, if it is 6,7,8 then it has two.

...except the 5122 (2), 5219Y (2), 5222 (2) and 6122 (1)

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Re:Cannon Lake: Intel’s Forgotten Generation – Chips and Cheese by Tsiklon on Sunday November 20, 2022 @01:10PM (#33683495)
good shout - I'm not so up to speed with what AVX512 can accelerate, but is it such a distinctive feature that it warrants a full delineating model number?
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Re:Cannon Lake: Intel’s Forgotten Generation – Chips and Cheese by adgjlsfhk1 on Sunday November 20, 2022 @02:06PM (#33684078)
an extra avx512 fma unit means it can do twice as many z=a*b+c instructions per clock. this only really matters for matrix multiplication (for anything else you are memory bandwidth limited), but 2x matmul performance is a really big deal for hpc
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