Is "Core Deactivation" a thing?

Thread replies: 12
Thread images: 4

Anonymous
Is "Core Deactivation" a thing? 2017-05-02 04:39:56 Post No. 60177136
[Report] Image search: [Google]

File: cylinder-deactivation-ram-hemi[1].jpg (38KB, 470x264px) Image search: [Google]

Is "Core Deactivation" a thing? Anonymous 2017-05-02 04:39:56 Post No. 60177136 [Report]

Some cars have cylinder deactivation to improve fuel economy when just doing light tasks like cruising. Do any multicore CPU's have an equivalent? Something to cut processing power/energy usage while you're using your computer as a facebook machine that doesn't wake up all the cores until you start using something processor-heavy?

If not, why not? Is it a technical infeasibility?

Anonymous 2017-05-02 04:40:53 Post No.60177151
[Report]

Anonymous 2017-05-02 04:40:53 Post No.60177151 [Report]

Arm does something similar

Anonymous 2017-05-02 04:53:49 Post No.60177375
[Report]

Anonymous 2017-05-02 04:53:49 Post No.60177375 [Report]

yes it's called throttling you retard

Anonymous 2017-05-02 04:56:16 Post No.60177402
[Report] Image search: [Google]

Anonymous 2017-05-02 04:56:16 Post No.60177402 [Report]

File: a.png (32KB, 560x230px) Image search: [Google]

32KB, 560x230px

sure, in linux it's pretty easy to turn on and off individual cpus/cores
there's probably scripts or something that will do it automatically

pic related, 8 online, 4 online, 1 online

Anonymous 2017-05-02 04:58:49 Post No.60177431
[Report]

Anonymous 2017-05-02 04:58:49 Post No.60177431 [Report]

>>60177375
>>60177136
Yes, it is called parking, not throttling.

Anonymous 2017-05-02 04:58:55 Post No.60177433
[Report]

Anonymous 2017-05-02 04:58:55 Post No.60177433 [Report]

0% core usage = deactivation
CPUs don't work the same as car engines in that you don't need the piston to completely turn off or idle at 1500 rpm.

Anonymous 2017-05-02 04:59:25 Post No.60177440
[Report]

Anonymous 2017-05-02 04:59:25 Post No.60177440 [Report]

>>60177375
that usually just refers to frequency adjustments

Anonymous 2017-05-02 04:59:39 Post No.60177452
[Report]

Anonymous 2017-05-02 04:59:39 Post No.60177452 [Report]

I'll take "what are C-states and P-states", please.

Anonymous 2017-05-02 05:00:24 Post No.60177463
[Report]

Anonymous 2017-05-02 05:00:24 Post No.60177463 [Report]

>>60177375
I thought throttling decreases clock rate across the board, not selectively deactivates cores.

Anonymous 2017-05-02 05:02:32 Post No.60177489
[Report] Image search: [Google]

Anonymous 2017-05-02 05:02:32 Post No.60177489 [Report]

File: a.png (6KB, 284x145px) Image search: [Google]

6KB, 284x145px

>>60177463
>decreases clock rate across the board
it's usually per-core

Anonymous 2017-05-02 05:07:22 Post No.60177569
[Report]

Anonymous 2017-05-02 05:07:22 Post No.60177569 [Report]

>>60177489
>>60177402
not very scientific, but interestingly, my cpu runs a bit cooler if i let all 8 cores idle at their lowest frequency (1.4GHz down from 3.9GHz), versus disabling 7 of the cores, putting more strain on the one remaining core

Anonymous 2017-05-02 05:19:23 Post No.60177706
[Report] Image search: [Google]

Anonymous 2017-05-02 05:19:23 Post No.60177706 [Report]

File: 1478202598647.jpg (58KB, 363x1082px) Image search: [Google]

58KB, 363x1082px

>>60177136
yeah

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible. Read more on this topic here - https://archived.moe/talk/thread/1694/

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible.
Read more on this topic here - https://archived.moe/talk/thread/1694/