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)
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?
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
EX-YZZZ vA
E3 - Rebranded Desktop Class parts with ECC support
E5 - High-Desktop & Regular Multi-Processor Server parts
E7 - High-End Multi-Processor Server
Y - Denotes Socket Support. ZZZ - Denotes a model number, indicating from low to high increases in features, cores and/or clock speed. vA - Denotes Generation.
Xeon E5-2980v2 - is a high-core count server processor for use in dual socket servers, belonging to the Ivy Bridge Generation of parts.
The new naming "convention" is as follows - from a glance can you identify any information from this;
Xeon Bronze 3204
Xeon Silver 4214R
Xeon Gold 6212U
Xeon Gold 6342
Xeon Platinum 8280
Xeon Platinum 8380
Xeon W-2295
Bronze, Silver, Gold, Platinum - are so unclear as to be meaningless - there are dual socket Silver processors more capable than some Gold processors. W prefixed parts are Workstation parts. The First Digit bears no connection to anything (except in the platinum series where it denotes 8 socket capability), perhaps PCI-E Lanes? The Second digit apparently denotes generation. The Suffix denotes that it's only capable of running in a single processor configuration - except when it doesn't.
Ohh, and the 'E3-**** v*' convention still stands for desktop rebranded parts.
It's a complete mess.