T051 - October Update: First RK3368 True OctaCore Release
October T051 Firmware Updatehttp://cdncache-a.akamaihd.net/items...rrow-10x10.png
RK3368 True OctaCore Release
http://i.imgur.com/JmoGhYB.jpg
A recent conversation at CNXSoft on the topic of throttling, benchmarking and big.LITTLE architecture reminded me to continue my experiment into the possibility of enabling simultaneous processing among all eight cores of the RK3368. As implemented from stock, the RK3368 is really more like a quad core processor (tasks are grouped into one cluster of one or four cores at a time) with regards to multithreading and task schedulinghttp://cdncache-a.akamaihd.net/items...rrow-10x10.png.
The stock big.LITTLE implementation of the RK3368 cpu may be better suited for tablets and mobile deviceshttp://cdncache-a.akamaihd.net/items...rrow-10x10.png.
This firmware decouples the CPU clusters from the voltage scaling and task scheduling design of the first gen big.LITTLE system implemented in the RK3368 and returns to plain old DVFS combined with GTS (global task scheduling). Basically, this allows all eight cores of the cpu to work at once - making it a 'true' octacore cpu. Frequency of all eight cores: 1608
TL;DR: All eight CPU cores are enabled simultaneously as 'big' cores at 1608mhz, instead of four big and four little.
Compatibility note: T051 is a reference to the pcba used in the Z4 and other similar devices.
RK3368 True OctaCore Release
http://i.imgur.com/JmoGhYB.jpg
A recent conversation at CNXSoft on the topic of throttling, benchmarking and big.LITTLE architecture reminded me to continue my experiment into the possibility of enabling simultaneous processing among all eight cores of the RK3368. As implemented from stock, the RK3368 is really more like a quad core processor (tasks are grouped into one cluster of one or four cores at a time) with regards to multithreading and task schedulinghttp://cdncache-a.akamaihd.net/items...rrow-10x10.png.
The stock big.LITTLE implementation of the RK3368 cpu may be better suited for tablets and mobile deviceshttp://cdncache-a.akamaihd.net/items...rrow-10x10.png.
This firmware decouples the CPU clusters from the voltage scaling and task scheduling design of the first gen big.LITTLE system implemented in the RK3368 and returns to plain old DVFS combined with GTS (global task scheduling). Basically, this allows all eight cores of the cpu to work at once - making it a 'true' octacore cpu. Frequency of all eight cores: 1608
TL;DR: All eight CPU cores are enabled simultaneously as 'big' cores at 1608mhz, instead of four big and four little.
- This is/was a personal project (I **really* dislike the RK implementation of big.LITTLE in TV boxes) but became even more so due to a lack of testers. Whatever is in the firmware and what the ROM does well is what suits my particularhttp://cdncache-a.akamaihd.net/items...rrow-10x10.png use case. Whatever isn't, doesn't.
- Widevine Level 3
- Latesthttp://cdncache-a.akamaihd.net/items...rrow-10x10.pngLibs
- Overclocked CPU - ALL cores run at 1608 simultaneously. Unlike my previous firmware uploads, this overclock method is more logical in its implementation, thus more stable, as it's not 'fighting' against the big.LITTLE clusters in factory settings.
- Optimized emmc, vpu, gpu, ddr and all DVFS regulated components.
- Significantly lower vcore for better thermal performancehttp://cdncache-a.akamaihd.net/items...rrow-10x10.png and stability.
- Play Storehttp://cdncache-a.akamaihd.net/items...rrow-10x10.png
- Kodi, Netflix or anything else that can be freely obtained via appstorehttp://cdncache-a.akamaihd.net/items...rrow-10x10.png
- TV Launcher (maybe next release?)
Compatibility note: T051 is a reference to the pcba used in the Z4 and other similar devices.
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