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AMD Touts Its Memory Architecture
May 9, 2013 by admin
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AMD has said the memory architecture in its heterogeneous system architecture (HSA) will move management of CPU and GPU memory coherency from the developer’s hands down to the hardware.
While AMD has been churning out accelerated processing units (APUs) for the best part of two years now, the firm’s HSA is the technology that will really enable developers to make use of the GPU. The firm revealed some details of the memory architecture that will form one of the key parts of HSA and said that data coherency will be handled by the hardware rather than software developers.
AMD’s HSA chips, the first of which will be Kaveri, will allow both the CPU and GPU to access system memory directly. The firm said that this will eliminate the need to copy data to the GPU, an operation that adds significant latency and can wipe out any gains in performance from GPU parallel processing.
According to AMD, the memory architecture that it calls HUMA – heterogeneous unified memory access, a play on unified memory access – will handle concurrency between the CPU and GPU at the silicon level. AMD corporate fellow Phil Rogers said that developers should not have to worry about whether the CPU or GPU is accessing a particular memory address, and similarly he claimed that operating system vendors prefer that memory concurrency be handled at the silicon level.
Rogers also talked up the ability of the GPU to take page faults and that HUMA will allow GPUs to use memory pointers, in the same way that CPUs dereference pointers to access memory. He said that the CPU will be able to pass a memory pointer to the GPU, in the same way that a programmer may pass a pointer between threads running on a CPU.
AMD has said that its first HSA-compliant chip codenamed Kaveri will tip up later this year. While AMD’s decision to give GPUs access to DDR3 memory will mean lower bandwidth than GPGPU accelerators that make use of GDDR5 memory, the ability to address hundreds of gigabytes of RAM will interest a great many developers. AMD hopes that they will pick up the Kaveri chip to see just what is possible.
AMD Debuts R5000
AMD has released its Firepro R5000 graphics card that has video over IP capabilities.
AMD typically promotes its workstation class Firepro cards using CAD/CAM software, however this time the company is relying on remote viewing as the big selling point for its latest workstation graphics card. AMD’s Firepro R5000 has a GPU that uses its Graphics Core Next (GCN) architecture and Teradici PC video over IP technology to send graphics output over the network.
AMD used its Pitcarin GPU coupled to 2GB of GDDR5 memory in the Firepro R5000. However it isn’t AMD’s GPU that is the big selling point of the Firepro R5000 but rather Teradici’s Tera2240 chip that encrypts display output before sending it out on the network, while supporting up to 60fps (frames per second).
AMD’s Firepro R5000 is intended to be used in render farms, with each final image being sent over an IP network to the end host, and the firm claims that the technology can be used in education, financial and media environments.
The Firepro R5000 is a single slot graphics card that has two mini Displayport outputs that can drive two 2500×1600 displays, however it can also drive a further four remote displays at 1920×1200 resolution by sending data over its RJ45 Ethernet port.
Both AMD and Teradici talked up the low configuration overheads of the Firepro R5000.
AMD 2014 GPU Shaping Up
It looks like AMD has changed its mind about 8000 series graphics, part of the Solar System range of products are slowly showing up in the market.
We got an idea that at some point in the latter part of 2013 there will be some new Sea Islands based graphics line from AMD. What we refer to as the HD 8000 series will come at some point, but AMD can actually end up branding some of these new parts as HD 7000 series products as well.
We were more interested in the big picture, when and whether we will see an entirely new generation in 2014, let’s call it 9000 series for now. Multiple sources have told us that AMD will stick with discrete graphics for the foreseeable future. In 2014, we should see the new HSA generation as well as a steady roadmap for the future beyond 2014.
Remember, AMD still makes quite a bit of money on graphics. It doesn’t makes a lot, but it doesn’t build GPUs at a loss either. Its graphics integrated in CPUs, APUs if you will, also help AMD sell more cores and this is why AMD will stick with making new graphics cores in the future. Technology developed for high-end discrete graphics will trickle down to APUs over time.
Winning all three consoles, including the already launched Nintendo Wii U as well as the soon to launch Xbox 720 (next) and Playstation, 4 will definitely help AMD to perform even better in the future and build closer relations with developers.
Nvidia will have someone to fight in this market and AMD will continue to make discrete graphics cards, as well as notebook chips. Both companies will fight for as much market share as they possibly can and analysts who claim either of them is about to ditch the discrete market is dead wrong.
AMD Delays Cards
While some people are packing in smoking, AMD thinks it is a good idea to pack in releasing new graphics cards, at least for a year or so.
AMD marketing manager Robert Hallock told Megagames that the company has no intentions to release Radeon HD 8000 series cards for the foreseeable future.
“The HD 7000 Series will remain our primary focus for quite some time,” he said.
When pressed he said that AMD and its partners are happy with the HD 7000 Series, and it will continue to be its emphasis in the channel for the foreseeable future. There had been some rumours that an HD 8000 Series was being developed. However AMD has never confirmed it and so far there has been no proof that any were ready to show up.
Hallock’s comments lend credibility to rumours that the HD 8000 family won’t be out before Q4 2013.
AMD Offers More Radeon Chips
AMD has announced four Radeon HD 8000M series GPU chips sporting its latest Graphics Core Next (GCN) architecture.
AMD’s GCN architecture made its first appearance in the firm’s ultra high-end mobile chips, however next month’s CES show will see the firm show off laptops featuring four Radeon HD 8000M series chips. The firm’s four Radeon HD 8000M chips are pitched at the mainstream and gaming laptop markets, though the company said that Asus already has a laptop announced that will use the chips in an ‘ultrathin’ design.
AMD’s Radeon HD 8000M series sees the firm split three chips with the same number of stream processors and memory clock speeds that scale up to 1.25GHz but differentiated by their core speeds. The firm’s Radeon HD 8500M, Radeon HD 8600M and Radeon HD 8700M all have 384 stream processors but are clocked up to 650MHz, 775MHz and between 650MHz and 850MHz, respectively.
Topping AMD’s present range is the Radeon HD 8800M, which has 640 stream processors and is clocked at between 650MHz and 700MHz, while its GDDR5 memory is also clocked at 1.25GHz. All of the firm’s chips, by virtue of being based on the GCN architecture, support DirectX 11.1.
AMD said it will launch three more chips in the Radeon HD 8000M series in the second quarter of 2013. According to the firm’s roadmap, two of those chips will sit above the Radeon HD 8800M in terms of performance while the third will straddle somewhere between the Radeon HD 8600M and Radeon HD 8700M.
AMD was tight-lipped on the power figures for its chips, saying that full details of its Radeon HD 8000M series chips will appear at CES, where its partners will tip up with laptops sporting the chips.
AMD Shows Piledriver Opteron
AMD’s Piledriver rollout is all but complete. With Trinity in the mobile and desktop space, new 3300 and 4300 Opterons are bringing the new architecture to data centers.
The Opteron 4300 series offers six different parts, in quad-, six- and eight-core flavours. Stock clocks range between 2.2GHz and 3.5GHz, with TDP’s in the 35W to 95W range. The cheapest Opteron 4334 costs $191, while the priciest 4332HE comes in at $501. The 3300 series consists of three quad- and eight-core SKUs, priced at $125 to $229. The pricing of both series is pretty aggressive.
But what’s next for AMD? Well things should be eerily quiet on the server front in 2013. Abu Dhabi, Seoul and Delhi/Orochi C should last throughout 2013 and even a good part of 2014. That’s when we can expect some major changes, as AMD transitions to 28nm and goes about transforming its Opteron lineup.
Future Low Power CPUs and APUs (as AMD calls them) should replace Dehli/Orochi-C in 1P and dense server markets, but AMD is also planning “Client APUs for market enablement,” and this sounds a lot like ARM-based low voltage parts. Of course, in the high end AMD plans to stick with big Steamroller cores, but mid-2014 is a long way off.
Radeon 8000 HD Expected In Q2
Since we only have one month left in 2012 and due the fact that graphics companies rarely announce something big in December, it is obvious that Radeon HD 8000 slipped to 2013.
Our well informed industry sources are confirming that the next generation, based on Sea Islands, architecture is coming in 2013 and some of them dare to say that it will be Q2 2013 rather than Q1 2013. Some people were expecting to see the cards in Q1 2013 but even according to AMD’s own roadmap Sea Islands, the new GPU architecture with HAS features was scheduled (or should we say delayed. Ed) for 2013.
AMD has already communicated this schedule loud and clear in its February 2012 roadmap update, and even then it killed hopes that Sea Islands or HD 8000 cards are coming in very late Q3 or Q4 2012, as was previously expected.
We won’t get into any specific details like the 8000 branding, or die sizes as we simply don’t know this at the time being. It’s safe to say that these cards will end up faster than 7000 series and at similar TDPs to the previous generation, all manufactured in 28nm.
AMD Adds On For GPU
AMD is offering a new games bundle with HD 7000 series cards and oddly enough, the games on offer are pretty good.
Anyone who goes for an HD 7900 series card is looking at Farcry 3, Hitman: Absolution and Sleeping Dogs. Buyers of two HD 7800 cards or a dual-headed HD7770 GHz edition can expect Farcry and Hitman, while those less fortunate, who end up with a single HD 7800 or HD 7770 series card will get just Farcry.
Still, this is pretty good value for money and the choice of titles is just as good. Bundled games tend to be somewhat older, less popular titles, so AMD’s new Never Settle bundle seems like a welcome breath of fresh air.
AMD Cuts Radeon Prices
After the recent price cut back in July, that included a $50 price cut for HD 7970, HD 7950 and HD 7870 graphics cards, AMD has apparently decided to cut some of these prices even further taking the HD 7950 3GB graphics card down to $320, or just in line with Nvidia’s recently release GTX 660 Ti graphics card.
AMD has already dropped the HD 7970 from $479 to $429, HD 7950 from $399 to US $349 and the HD 7870 down from $349 to $299. The new price cut skips the HD 7970 graphics card but includes the HD 7950, HD 7870 as well as the 1 and 2GB versions of the HD 7850.
The most important is probably the price cut for the 3GB HD 7950 which battles it out with Nvidia’s recently released GTX 660 Ti. The HD 7950 3GB is, according to the report, will receive a $30 price cut placing it at $320. The HD 7870 2GB graphics card got another $50 price cut pushing it down to $250 which probably makes it one of the most interesting mid-range graphics cards on the market.
AMD also decided to drop price on 1 and 2GB version of the HD 7850 graphics card taking them down by $40 to $190 and $210, respectively.