By: Andrei F (andrei.delete@this.anandtech.com), September 10, 2021 10:31 am
Room: Moderated Discussions
inteluser (inteluser.delete@this.sharklasers.com) on September 10, 2021 2:52 am wrote:
> on alder lake, how will the separation instructions of small cores or big cores?
> will there be a dispatcher or scheduler from HW or the OS to take priority?
The same way we've had heterogeneous cores in mobile SoCs for the better part of a decade.
The OS scheduler just sees another core, and there's extra load and utilisation heuristics to schedule workloads around the various cores to make best use of perf or efficiency.
There is no hardware involved.
> on alder lake, how will the separation instructions of small cores or big cores?
> will there be a dispatcher or scheduler from HW or the OS to take priority?
The same way we've had heterogeneous cores in mobile SoCs for the better part of a decade.
The OS scheduler just sees another core, and there's extra load and utilisation heuristics to schedule workloads around the various cores to make best use of perf or efficiency.
There is no hardware involved.
| Topic | Posted By | Date |
|---|---|---|
| alder lake. | inteluser | 2021/09/10 02:52 AM |
| alder lake. | Andrei F | 2021/09/10 10:31 AM |
| alder lake. | Andrey | 2021/09/10 10:38 AM |
| alder lake. | rwessel | 2021/09/10 12:18 PM |
| alder lake. | Andrei F | 2021/09/10 01:49 PM |
| alder lake. | Andrey | 2021/09/10 05:12 PM |
| alder lake. | David Hess | 2021/09/10 08:39 PM |
| alder lake. | Andrey | 2021/09/11 01:28 AM |
| alder lake. | --- | 2021/09/10 06:24 PM |
| alder lake. | Andrei F | 2021/09/12 02:09 AM |
| DVFS | David Kanter | 2021/09/12 10:58 PM |
| DVFS | Andrei F | 2021/09/13 02:02 AM |
| DVFS | Anon | 2021/09/13 04:28 AM |
| DVFS | Jukka Larja | 2021/09/13 06:35 AM |
| DVFS | Andrei F | 2021/09/14 01:07 AM |
| DVFS | Jukka Larja | 2021/09/14 05:11 AM |
| DVFS | Andrei F | 2021/09/14 08:55 AM |
| DVFS | Jukka Larja | 2021/09/14 11:23 AM |
| DVFS | --- | 2021/09/13 11:19 AM |
| DVFS | Doug S | 2021/09/13 11:57 AM |
| DVFS | David Hess | 2021/09/13 12:32 PM |
| DVFS | --- | 2021/09/13 02:06 PM |
| DVFS | David Hess | 2021/09/13 03:21 PM |
| DVFS | David Kanter | 2021/09/15 04:05 PM |
| DVFS | David Hess | 2021/09/13 12:46 PM |
| DVFS | Jukka Larja | 2021/09/14 05:35 AM |
| Quick shutdown? | David Kanter | 2021/09/15 11:46 AM |
| Quick shutdown? | Andrei F | 2021/09/16 08:12 AM |
| Quick shutdown? | David Kanter | 2021/09/16 12:04 PM |
| Quick shutdown? | Andrei F | 2021/09/17 02:35 AM |
| Quick shutdown? | Andrei F | 2021/09/17 02:38 AM |
| and weren't 'they' right? | Daniel B | 2021/09/13 05:20 AM |
| and weren't 'they' right? | Andrei F | 2021/09/13 05:51 AM |
| and weren't 'they' right? | Daniel B | 2021/09/13 07:29 AM |
| and weren't 'they' right? | anon | 2021/09/13 06:07 AM |
| and weren't 'they' right? | Jukka Larja | 2021/09/13 06:26 AM |
| and weren't 'they' right? | anon | 2021/09/14 12:37 AM |
| Alder Lake has no little cores | Heikki Kultala | 2021/09/13 07:33 AM |
| Alder Lake has no little cores | Michael S | 2021/09/13 08:33 AM |
| Alder Lake has no little cores | me | 2021/09/13 11:45 AM |
| Alder Lake has no little cores | Heikki Kultala | 2021/09/13 02:49 PM |
| Alder Lake has no little cores | anon | 2021/09/14 12:42 AM |
| why stop at two core sizes? | hobold | 2021/09/14 06:47 AM |
| Memory caches did this, right? | Mark Roulo | 2021/09/14 03:51 PM |
| Memory caches did this, right? | Brett | 2021/09/14 08:17 PM |
| Memory caches did this, right? | Kevin G | 2021/09/16 04:10 PM |
| Large reorder buffers (L1+L2) | ⚛ | 2021/09/15 12:24 PM |
| Large reorder buffers (L1+L2) | hobold | 2021/09/15 01:06 PM |
| Alder Lake has no little cores | Adrian | 2021/09/14 09:33 AM |
| and weren't 'they' right? | David Hess | 2021/09/13 01:00 PM |
| Battery vs Performance | Mark Roulo | 2021/09/13 01:18 PM |
| Battery vs Performance | Doug S | 2021/09/13 03:05 PM |
| Battery vs Performance | David Hess | 2021/09/13 03:28 PM |
| Battery vs Performance | --- | 2021/09/13 06:08 PM |
| Battery vs Performance | --- | 2021/09/13 06:08 PM |
| Battery vs Performance | Doug S | 2021/09/13 09:53 PM |
| Battery vs Performance | Anon | 2021/09/14 07:42 AM |
| and weren't 'they' right? | Daniel B | 2021/09/13 01:57 PM |
| and weren't 'they' right? | David Hess | 2021/09/13 03:11 PM |
| and weren't 'they' right? | --- | 2021/09/13 03:38 PM |
| and weren't 'they' right? | --- | 2021/09/13 03:32 PM |
| and weren't 'they' right? | Brendan | 2021/09/14 04:30 AM |
| and weren't 'they' right? | Jukka Larja | 2021/09/14 05:31 AM |
| and weren't 'they' right? | Etienne Lorrain | 2021/09/14 01:29 AM |