this post was submitted on 13 Nov 2023
1 points (100.0% liked)

Hardware

33 readers
1 users here now

A place for quality hardware news, reviews, and intelligent discussion.

founded 11 months ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 1 points 10 months ago (7 children)

Intel's E cores doing what they are supposed to on 2 games and 2 years after their debut, and only on their newest cpu lineup, peak Intel engineering right here

[–] [email protected] 1 points 10 months ago

and they refuse to let people buy cpus without them, cant let amd win every bench mark that the vast majority of gamers will never use

[–] [email protected] 1 points 10 months ago (1 children)

which just shows the scheduler is wrong. which people who cared to put the effort in already did manually with lasso. the only missing piece is random main kernel threads jumping on to p cores. AMD scheduler isn't perfect either. And both companies are going big/little. so plenty of room to keep improving.

[–] [email protected] 1 points 10 months ago (1 children)

correction: it shows that Intel Thread Director is wrong, and that the scheduler shouldn't trust it.

[–] [email protected] 1 points 10 months ago (1 children)

Thread Director doesn't do any directing, it's a a set of new registers the OS scheduler is supposed to read for feedback on how well a thread is running on a core. If APO can do it right, it means the scheduler is wrong.

15.6 HARDWARE FEEDBACK INTERFACE AND INTEL® THREAD DIRECTOR

Intel processors that enumerate CPUID.06H.0H:EAX.HW_FEEDBACK[bit 19] as 1 support Hardware Feedback Interface (HFI). Hardware provides guidance to the Operating System (OS) scheduler to perform optimal workload scheduling through a hardware feedback interface structure in memory.

[–] [email protected] 1 points 10 months ago

facepalm are you daft?

how the scheduler gets information from ITD doesn't change what ITD does.

[–] [email protected] 1 points 10 months ago (1 children)

I mean unless you're Apple and have full top to bottom control of your hardware and software stack it takes some time for software to catch up with the hardware.

Took a while for games to use MMX, SSE, AVX. Stuff that uses AVX512 can probably be counted on one hand.

Good ray traced games are becoming mainstream just now, two whole generations after GeForce 20 series.

I do begrudge Intel for holding this back from 12th and 13th gen users though.

[–] [email protected] 1 points 10 months ago

Took a while for games to use MMX

Even Intel's 1st iteration of MMX was a kludge, as it used the floating point unit, so you could either use FP, or MMX, but not both simultaneously o.O

Took awhile for that to be separated and gain the benefits of both available together.

Intel also added 57 new instructions specifically designed to manipulate and process video, audio, and graphical data more efficiently.

These instructions are oriented to the highly parallel and often repetitive sequences often found in multimedia operations.

Highly parallel refers to the fact that the same processing is done on many different data points, such as when modifying a graphic image.

The main drawbacks to MMX were that it only worked on integer values and used the floating-point unit for processing, meaning that time was lost when a shift to floating-point operations was necessary.

These drawbacks were corrected in the additions to MMX from Intel and AMD.

https://www.informit.com/articles/article.aspx?p=130978&seqNum=7

[–] [email protected] 1 points 10 months ago

More like peak Microsoft engineering, since this is something that was always supposed to be done by the operating system. Microsoft is so awful Intel had to do it themselves.

[–] [email protected] 1 points 10 months ago (1 children)

It's the exact opposite of what you're saying.

Intel's E-cores + Thread Director work perfectly fine 98% of the time, but there are edge cases where the Windows Scheduler cant get it right, even with the hints from Thread Director, and that's where APO comes in, to manually force the correct scheduling.

Also lets not pretend that AMD isnt suffering scheduling issues themselves, the 7950x3D and 7900x3D are shunned because they have WORSE scheduling in games as they rely on the Windows Scheduler to just try and figure things out itself, and that doesnt usually work with 2 CCD's with one having a higher frequency and the other more cache.

[–] [email protected] 1 points 10 months ago

Importantly, you think the fix will come for 12/13 gen Intel? You seem to know what you are talking about.

[–] [email protected] 1 points 10 months ago

It’s not even engineering. It’s a software lock. Absolute bonkers.

Screw intel as an owner of a 13700k

[–] [email protected] 1 points 10 months ago

Fine wine baby! Oh, wrong company.