Hasta La Gadget!

Just in case yesterday’s news that Samsung is ready to enable new features on its Exynos 5 Octa chips wasn’t clear, ARM has published a few demo videos to show what it can do. All three are embedded after the break, and the first one highlights how the Exynos 5 Octa 5420 can activate some or all of its 8 cores to maximize responsiveness while launching and using Quickoffice. As you can see above in the screenshot, all eight cores are activated while launching the app, then unused ones switch off for more efficiency. Another video shows how it runs Angry Birds Rio on just the four Cortex-A7 “LITTLE” side of the CPU, rarely activating any of their more power-hungry A15 friends. The last demo video shows how its Mali-T628 GPU activates to process images faster and more efficiently than the CPU alone can.

Filed under: Cellphones, Tablets, Mobile, Samsung

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It’ll be a while before MediaTek’s true octa-core SoC makes its glorious arrival, but for the time being, the company’s unveiling something just as interesting — and perhaps more practical. The new MT8135 announced today is a “quad-core” SoC aimed at “the middle- to high-end tier of the tablet OEM market.” We quote “quad-core,” because it actually consists of two clusters: dual Cortex-A15 cores and dual Cortex-A7 cores. But the good news is that unlike the original big.LITTLE configuration where only one cluster can operate at any given time (depending on how heavy the workload is), MediaTek’s confirmed that it has implemented big.LITTLE MP (“MP” as in heterogeneous multi-processing) in the MT8135, meaning both the A15 and the A7 clusters can operate simultaneously.

Another highlight of this MT8135 is that it’ll be one of the first SoCs — alongside LG’s H13 (which we’ve seen first-hand), Renesas’ APE6 and Renesas’ R-Car H2 — to come with Imagination Technologies’ almighty PowerVR Series6 GPU. Specifically, this is the PowerVR G6200 which, as part of the MT8135, can apparently deliver “up to four times more ALU (arithmetic logic unit) horsepower” than the Series5XT GPU on the cheaper, quad-A7 MT8125. And unsurprisingly, the MT8135 gets the same Miracast wireless video goodie given to the MT8125; though it’s also worth noting that the latter only supports LPDDR2 RAM instead of the more powerful LPDDR3.

Sadly, there’s no further information regarding availability, but you can kill some time by checking out more technical details in the video (with benchmarks) and press releases after the break.

Filed under: Misc

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Source: Imagination Technologies

Thanks to Linus Torvalds’ figurative stroke of the pen, the Linux kernel 3.10 is now final — paving the way for its inclusion in a bevy of Linux distributions, and even offshoots such as Android and Chrome OS. The fresh kernel brings a good number of changes, such as timerless multitasking, a new caching implementation and support for the ARM big.LITTLE architecture. In simplistic terms, the new multitasking method should help improve performance and latency by firing the system timer only once per second — rather than 1,000 times — when tasks are running. Meanwhile, users with both traditional hard drives and SSDs will find performance benefits from bcache, which brings writeback caching and a filesystem agnostic approach to leveraging the SSD for caching operations. Also of significance, Linux kernel 3.10 enhances ARM support by including the big.LITTLE architecture, which combines multiple cores of different types — commonly the Cortex-A7 and Cortex-A15 — that focus on either power savings or performance. The full list of improvements is rather lengthy, but if you feel like nerding out with the changelog, just grab a caffeinated beverage and get to it.

Filed under: Misc

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Via: Tech2.in

Source: Linus Torvalds (Linux Kernel Mailing List)

That Galaxy S 4 isn’t going to compute tasks through sheer force of will, you know. Just a day after Samsung unveiled the smartphone as its inaugural Exynos 5 Octa device, the company has confirmed that the not-really-eight-core ARM processor should be in mass production during the second quarter of the year, or between April and June. There aren’t many more details to share beyond what the company mentioned at CES, but that doesn’t diminish what could be a best-of-all-worlds processor: the automatic switching between four Cortex-A15 and four Cortex-A7 cores should give it a performance edge over many of its peers while reducing power consumption by up to 70 percent. We also know that the Octa’s graphics performance has largely caught up to peers versus earlier Exynos 4 designs, as Imagination Technologies has confirmed that its PowerVR SGX544MP is providing enough muscle to double 3D performance over the creaky Mali-400 in the Exynos 4 Quad. About the only mystery left is whether or not many companies beyond Samsung will get a chance at some Exynos 5 Octa silicon, although there’s one or two prospects.

Filed under: Cellphones, Tablets, Mobile, Samsung

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Source: Samsung, Imagination Technologies

ARM’s big.LITTLE is a processor technology that you are going to hear a lot about in 2013 as Samsung, Huawei and others promote their 8-core (octo-core) chips used in smartphones, tablets and possibly Chromebooks. There is no doubt that marketing teams will call those chips “8 cores” – because you know, 8 is better than 4, which is better than 2… But these chips aren’t 8-core in the way that most people think about 8-cores, which means 8 cores that work together on a computing task. Instead, big.LITTLE octo-core chips have two sets of four cores, some big, some small (hence the big.LITTLE name), that take turns to execute a task with the most efficient power envelope. Let’s take a closer look:

big.LITTLE overview

big.LITTLE comes from a simple observation: in order to make each processor core faster, they need to get bigger to host more execution units, instruction decoder, cache memory etc… But as chips get bigger, they invariably have more transistors and require more power to maintain or switch state. (more…)

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