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nVidia’s CUDA 5.5 Available
Nvidia has made its CUDA 5.5 release candidate supporting ARM based processors available for download.
Nvidia has been aggressively pushing its CUDA programming language as a way for developers to exploit the floating point performance of its GPUs. Now the firm has announced the availability of a CUDA 5.5 release candidate, the first version of the language that supports ARM based processors.
Aside from ARM support, Nvidia has improved supported Hyper-Q support and now allows developers to have MPI workload prioritisation. The firm also touted improved performance analysis and improved performance for cross-compilation on x86 processors.
Ian Buck, GM of GPU Computing Software at Nvidia said, “Since developers started using CUDA in 2006, successive generations of better, exponentially faster CUDA GPUs have dramatically boosted the performance of applications on x86-based systems. With support for ARM, the new CUDA release gives developers tremendous flexibility to quickly and easily add GPU acceleration to applications on the broadest range of next-generation HPC platforms.”
Nvidia’s support for ARM processors in CUDA 5.5 is an indication that it will release CUDA enabled Tegra processors in the near future. However outside of the firm’s own Tegra processors, CUDA support is largely useless, as almost all other chip designers have chosen OpenCL as the programming language for their GPUs.
Nvidia did not say when it will release CUDA 5.5, but in the meantime the firm’s release candidate supports Windows, Mac OS X and just about every major Linux distribution.
nVidia Explains Tegra 4 Delays
nVidia’s CEO Jen-Hsun Huang mentioned a concrete reason of Tegra 4 delays during the company’s latest earnings call.
The chip was announced back in January, but Jensen told the investors that Tegra 4 was delayed because of Nvidia’s decision to pull in Grey aka Tegra 4i in for six months. Pulling Tegra 4i in and having it scheduled for Q4 2013 was, claims Jensen, the reason for the three-month delay in Tegra 4 production. On the other hand, we heard that early versions of Tegra 4 were simply getting too hot and frankly we don’t see why Nvidia would delay its flagship SoC for tactical reasons.
Engaging the LTE market as soon as possible has been the main reason for pulling Tegra 4i, claims Jensen. It looks to us that Tegra 4 will be more than three months delayed but we have been promised to see Tegra 4 based devices in Q2 2013, or by the end of June 2013.
Nvidia claims Tegra 4i has many design wins and it should be a very popular chip. Nvidia expects to have partners announcing their devices based on this new LTE based chip in early 2014. Some of them might showcase some devices as early as January, but we would be surprised if we don’t see Tegra 4i devices at the Mobile World Congress next year, that kicks off on February 24th 2014.
Jensen described Tegra 4i as an incredibly well positioned product, saying that “it brings a level of capabilities and features of performance that that segment has just never seen”. The latter half of 2013 will definitely be interesting for Nvidia’s Tegra division and we are looking forward to see the first designs based on this new chip.
nVidia Wins With Tegra 4
Nvidia’s first Tegra 4 design win is here, apparently, and it doesn’t appear very impressive at all. Tegra 4 is late to the party, so it is a bit short on design wins, to put it mildly.
Now a new ZTE smartphone has been spotted by Chinese bloggers and it seems to be based on Nvidia’s first A15 chip. The ZTE 988 is a phablet, with a 5.7-inch 720p screen. It has 2GB of RAM, a 13-megapixel camera and a 6.9mm thin body. It weighs just 110g, which is pretty surprising. The spec is rather underwhelming, especially in the display department.
However, a grain of salt is advised. It is still unclear whether the phone features a Tegra 4 or a Qualcomm chipset. Also, it is rather baffling to see a 720p screen on a Tegra 4 phablet, it just seems like overkill.
Are CUDA Applications Limited?
Acceleware said at Nvidia’s GPU Technology Conference (GTC) today that most algorithms that run on GPGPUs are bound by GPU memory size.
Acceleware is partly funded by Nvidia to provide developer training for CUDA to help sell the language to those that are used to traditional C and C++ programming. The firm said that most CUDA algorithms are now limited by GPU local memory size rather than GPU computational performance.
Both AMD and Nvidia provide general purpose GPU (GPGPU) accelerator parts that provide significantly faster computational processing than traditional CPUs, however they have only between 6GB and 8GB of local memory that constrains the size of the dataset the GPU can process. While developers can push more data from system main memory, the latency cost negates the raw performance benefit of the GPU.
Kelly Goss, training program manager at Acceleware, said that “most algorithms are memory bound rather than GPU bound” and “maximising memory usage is key” to optimising GPGPU performance.
She further said that developers need to understand and take advantage of the memory hierarchy of Nvidia’s Kepler GPU and look at ways of reducing the number of memory accesses for every line of GPU computing.
The point Goss was making is that GPU computing is relatively cheap in terms of clock cycles relative to the time it takes to fetch data from local memory, let alone loading GPU memory from system main memory.
Goss, talking to a room full of developers, proceeded to outline some of the performance characteristics of the memory hierarchy in Nvidia’s Kepler GPU architecture, showing the level of detail that CUDA programmers need to pay attention to if they want to extract the full performance potential from Nvidia’s GPGPU computing architecture.
Given Goss’s observation that algorithms running on Nvidia’s GPGPUs are often constrained by local memory size rather than by the GPU itself, the firm might want to look at simplifying the tiers of memory involved and increasing the amount of GPU local memory so that CUDA software developers can process larger datasets.
Will Tegra 4 Help nVidia’s Financials?
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Trefis analysts believe Nvidia’s Tegra business is likely to grow over the next few years, although Nvidia won’t become a mobile chip company anytime soon.
In a note published a couple of days ago, Trefis concluded that Nvidia has managed to offset the impact of the PC slump thanks to mobile revenue. The PC market took a massive hit in 2012, and although things are looking up, Tegra could still come in handy.
Nvidia currently earns about 18 percent of its revenue from Tegra processors, which is not bad for a product that was on the drawing board just a few years ago.
“We estimate Tegra sales to grow at a CAGR of 17% until 2016. While we believe that Nvidia will manage to expand its footprint in mobile computing, we think that the increasing competition will keep its growth rate lower than the industry average,” said Trefis.
However, Trefis went on to conclude that Nvidia had more lack with tablets than smartphones. Last year it scored several big tablet design wins, but relatively few phone wins. The Tegra 4i, with integrated LTE, should lend a helping hand, but it won’t be ready for much of 2013. In addition, Nvidia is facing more pressure from Qualcomm and Samsung, while at the same time it was forced to push back the introduction of Tegra 4 due to technical issues.
Trefis believes Tegra’s contribution to Nvidia’s overall revenue could reach over 25 percent by 2019, which means the Tegra business won’t expand much in a mature smartphone market.
Nvidia has Tegra, AMD has consoles, so both outfits have something to fall back on in a slow PC market, at least for the time being.
Will Tegra 4 Support USB 3.0?
Wayne, also known as Tegra 4 is coming out at CES 2013, or in some 10 days from now. Nvidia has an event planned days ahead of CES 2013 and the company will likely show some tablets and hybrids based on the new Tegra SoC. Let’s call Wayne Tegra 4 before it gets official.
Nvidia had Wayne ready to launch in Q4 2012 but it had to wait for partners to release the designs based on it, and most of them wanted to do it at CES 2013. European phones based on Wayne are going to show up in February, at the Mobile World Congress.
This is the first quad-core A15 design that will bring a significant performance increase over Tegra 3 and we are hearing that the four-plus-one core will deliver a bigger performance boost than Tegra 3 did over Tegra 2. Also, the fact that the new chip is 28nm and supports DDR3L also promises more efficiency.
USB 3.0 support is something that is getting us excited as usually it is quite slow to transfer anything onto tablets, phones and hybrids. USB 3.0 on tablets will significantly increase the data transfer speed and Tegra 4 will be among the first chips to feature USB 3.0 support, and many consumers will appreciate faster data transfer rates.
The other thing that got our attention is dual display support and you will be able to have two independent screens. On Tegra 3 based devices, you can only mirror the output, not display two independent screens. It could be a very interesting feature for dockable devices.
nVidia’s Tegra 4 Specs Spotted
Here is an interesting leak, just what the doctor ordered to spice up a rather slow news cycle. Chiphell has posted a slide containing a few Tegra 4 specs, but we still don’t know the clocks or a few other interesting details. Of course, the leak should be taken with a grain of salt, but the specs are more or less in line with what we were expecting all along.
Tegra 4, codenamed Wayne, is a 28nm part with revamped graphics and new ARM cores. Although the slide does not directly point to the type of ARM cores used in the design, the new chip is based on ARM’s latest A15 core. Like the Tegra 3, the new chip will also feature an additional companion core to improve energy efficiency. No surprises here really.
In terms of GPU performance, Nvidia promises to deliver a six-fold improvement over the Tegra 3 and a 20x improvement over Tegra 2 chips. Oddly enough, in spite of Nvidia’s graphics prowess, Tegra chips never featured world-beating graphics. This time around they could, thanks to the new 72-core GPU. The GPU will be able to cope with 2560×1600 screens at 120Hz, but it could also take on 4K resolutions, although details are still sketchy. At this point 4K support could only be relevant for next-generation smart TVs, with a huge price tag.
As far as other features go, Tegra 4 brings support for USB 3.0 and DDR3L dual-channel memory. The leak does not mention LTE support.
Tegra 4 will have to take on the likes of Samsung’s upcoming Exynos 5440, which should also debut in early 2013. Nvidia was first to market with a quad-core A9 chip, but this time around it will have to face off against the new Exynos and A15 quad-cores from other vendors.
Nvidia is expected to showcase the new chip at CES and we’ll be there to check it out.
Yahoo Going Up
November 29, 2012 by admin
Filed under Around The Net
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Yahoo Inc shares climbed to their highest level in a year and a half, as investor confidence seems to be increasing that new Chief Executive Marissa Mayer can orchestrate a comeback that eluded three of her predecessors.
The Internet pioneer has yet to actually provide Wall Street with any hard evidence that its business is turning a corner – and she has warned that it will be a lengthy job – but investor faith in the ex-Google executive is running high.
Hedge funds Tiger Global Management and Greenlight Capital Management recently disclosed large stakes in Yahoo, accumulated during the third quarter.
“Money managers are staring to want to own this name again,” said Colin Gillis, an analyst with BGC Partners.
“For the amount of traffic they have, and the assets they have, they should be able to squeeze some value out of that,” Gillis said, referring to Yahoo. With Mayer at the helm, he said, Yahoo has “finally got somebody who the market believes can do that.”
Gravity Capital Management’s Adam Seessel said that Mayer’s recruitment of various Google Inc employees, including recently hired Yahoo Chief Operating Officer Henrique de Castro, has also helped burnish Yahoo’s image.
“What the market is seeing is not (financial) numbers so much as they’re seeing people voting with their feet, people moving from Google to Yahoo,” said Seessel, whose firm owns Yahoo shares.
“All these people from Google wouldn’t be following her if they didn’t think that she didn’t have some good cards to play,” he said.
nVidia Soars
Nvidia has published its third quarter earnings and the results are impressive to say the least. With record revenue of $1.2 billion, Nvidia’s net income in Q3 was $209.1 million (GAAP).
Quarterly revenue is up 12.9 percent year-over-year and represents a 15.3 percent sequential bump, beating analyst expectations. However, Nvidia expects its revenue to dip to between $1.02 and $1.17 billion in the fourth quarter.
The company blames the projected slump on a declining PC market. It seems Nvidia does not expect Windows 8 will have a very positive impact on the PC market.
Cars May Come With nVidia’s Tegra
January 23, 2012 by admin
Filed under Around The Net
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One of the things that we keep hearing as a big business opportunity for ARM manufacturers is to get their chips in cars. We heard this before, but this time we are not talking about navigation / entertainment systems.
The idea behind the concept is that more and more cars will come with collision detection mechanisms, road tracking that can keep your car stay in the high way lane. It gets better, the car can now lock on the car in front of you and accelerate and decelerate with it, so called adaptive cruise control with some manufacturers.
Fancier cars today come with elaborate stability assistance systems and many other features that might put such processors to good use, for something far more useful than just navigation and playing music.