Originally posted by ms178
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RHEL9 Raises Base Target For x86_64 CPUs Plus Possible Optimized Libraries With glibc-hwcaps
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Originally posted by ms178 View PostThanks for defining these new feature levels, it helps to move things forward and I hope it will even translate into the Windows world.
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Originally posted by zxy_thf View Post
A lot of reviewers are targeting gamers, not people using computers in production.
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Originally posted by ms178 View PostAs AMD usually lacks behind Intel in ISA-support, I'd say not having AVX-512 support now could hurt AMD users down the road tomorrow. I would have thought that they would bring it to AM4 with Zen 3, but they did not. We know now what that means for Zen 3 users as Zen 4 is rumored to get AVX-512 support, that is the next CPU to get for better long-term value....
means your thoughts are wrong AMD customers will not be hurt by AVX512 ISA.
AVX512 is a death horse right now AMD will not implement it in hardware but they already implemented it in software emulation run on AVX256 hardware.
Phantom circuit Sequence Reducer Dyslexia
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Originally posted by zxy_thf View Post
A lot of reviewers are targeting gamers, not people using computers in production.
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Originally posted by Qaridarium View Post
in my knowledge a 5950X has AVX512 emulation based on microcode on AVX256 hardware.
means your thoughts are wrong AMD customers will not be hurt by AVX512 ISA.
AVX512 is a death horse right now AMD will not implement it in hardware but they already implemented it in software emulation run on AVX256 hardware.
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Originally posted by ms178 View Post
I haven't heard any of this, AMD also doesn't explicitly support AVX-512 with Zen 3. By the way, AVX-512 was designed to be more multi-purpose friendly, and Matt Pharr, the original author of ISPC, thinks that it is a huge improvement. As more and more game engines make use of ISPC (such as the next EA and Unreal Engine), AVX-512 support will deliver these improvements to capable CPUs. The old mantra that AVX doesn't matter in games is about to change (ISPC makes good use of SSE on older CPUs, too. But there might be a performance delta where the newer ISAs provide huge benefits).
simple to much power consumtion and the need to downclock the core if the AVX512 unit is used.
your so called 5,2ghz 11900K turned into a 1,7ghz cpu if you use AVX512.
and if you have mixxed workload this decrease the integer performance very much and 80% of all code used is integer.
AMDs cpu design in the past used the SIMD 128bit units of 2 cores to emulate AVX256bit
and they design to use 2 simd 256bit units to emulate AVX512...
it is clear AMD will not support AVX512 per core because clock speed is to low.
the AVX units from AMD do not need to downclock it run at full ~4,5ghz...
compare it to car engine AVX512 is full 8L engine per core and AMD cpu cores are only downsizing useing one 3L engine with turbo and the AVX units of 2 cores can work together.
AMD is very successfull with this downsitzing strategy no need for AVX512 at all.
Phantom circuit Sequence Reducer Dyslexia
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Originally posted by Qaridarium View Post
you do a lot of advertisement for AVX512... nothing what you write in the benefit of intels AVX512 is true. why?
simple to much power consumtion and the need to downclock the core if the AVX512 unit is used.
your so called 5,2ghz 11900K turned into a 1,7ghz cpu if you use AVX512.
and if you have mixxed workload this decrease the integer performance very much and 80% of all code used is integer.
Originally posted by Qaridarium View PostAMDs cpu design in the past used the SIMD 128bit units of 2 cores to emulate AVX256bit
and they design to use 2 simd 256bit units to emulate AVX512...
Originally posted by Qaridarium View PostAMD is very successfull with this downsitzing strategy no need for AVX512 at all.
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Originally posted by phoronix View PostPhoronix: RHEL9 Raises Base Target For x86_64 CPUs Plus Possible Optimized Libraries With glibc-hwcaps
As we reported almost one year ago, Red Hat was looking at likely dropping older x86_64 CPU support from Red Hat Enterprise Linux 9 and we now have a better idea of their plans in catering RHEL9 better to modern processors...
http://www.phoronix.com/scan.php?pag...86-64-v2-Plans
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