wesbascas (2475022) writes "This morning, AMD unveiled its latest flagship graphics board: the $1,500, liquid-cooled, dual-GPU Radeon R9 295X2. With a pair of Hawaii GPUs that power the company's top-end single-GPU Radeon R9 290X, the new board is sure to make waves at price points that Nvidia currently dominates. In gaming benchmarks, the R9 295X2 performs pretty much in line with a pair of R9 290X cards in CrossFire. However, the R9 295X2 uses specially-binned GPUs which enable the card to run with less power than a duo of the single-GPU cards. Plus, thanks to the closed-loop liquid cooler, the R9 295X doesn't succumb to the nasty throttling issues present on the R9 290X, nor its noisy solution."
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An anonymous reader writes "AMD privately shared with Phoronix during GDC2014 that they're developing a new Linux driver model. While there will still be an open (Gallium3D) and closed-source (Catalyst) driver, the Catalyst driver will be much smaller. AMD developers are trying to isolate the closed-source portion of the driver to just user-space while the kernel driver that's in the mainline Linux kernel would also be used by Catalyst. It's not clear if this will ultimately work but they hope it will for reducing code duplication, eliminating fragmentation with different kernels, and allowing open and closed-source driver developers to better collaborate over the AMD Radeon Linux kernel driver."
crookedvulture writes "Microsoft formally introduced its DirectX 12 API at the Game Developers Conference yesterday. This next-gen programming interface will extend across multiple platforms, from PCs to consoles to mobile devices. Like AMD's Mantle API, it promises reduced CPU overhead and lower-level access to graphics hardware. But DirectX 12 won't be limited to one vendor's hardware. Intel, AMD, Nvidia, and Qualcomm have all pledged to support the API, which will apparently work on a lot of existing systems. Intel's Haswell CPUs are compatible with DirectX 12, as are multiple generations of existing AMD and Nvidia GPUs. A DirectX 12 update is also coming to the Xbox One. The first games to support the API won't arrive until the holiday season of 2015, though. A preview release is scheduled for this year." Reader edxwelch adds that OpenGL 4.4 already has functionality similar to the improvements brought by DirectX 12 and Mantle: "The announcement of DirectX 12 was a big focus of attention at GDC yesterday. The new API will bring Mantle-like low level access to the hardware, reducing the CPU overhead. The OpenGL talk 'Approaching Zero Driver Overhead in OpenGL,' on the other hand, received considerably less media attention. The OpenGL camp maintains that the features to reduce CPU overhead are already present in the current version. They suggest using the extensions such as, multidraw indirect combined with bindless graphics and sparse textures, OpenGL can get the similar 'close to the metal' performance as Mantle and DirectX 12."
MojoKid writes "Buzz has been building for the last week that Microsoft would soon unveil the next version of DirectX at the upcoming Games Developer Conference (GDC). Microsoft has now confirmed that its discussion forums at the show won't just be to discuss updates to DX11, but that the company is putting a full court press behind DirectX 12. The company responded sharply over a year ago, when an AMD executive claimed that future versions of the API were essentially dead, but it has been over four years since DX11 debuted. To date, Microsoft has only revealed a few details of the next-generation API. Like AMD's Mantle, it will focus on giving developers "close-to-metal" GPU resource access and reducing CPU overhead. Like Mantle, the goal of DirectX 12 is to give programmers more control over performance tuning, with an eye towards better multi-threading and multi-GPU scaling. Unlike Mantle, DirectX 12 will undoubtedly support a full range of GPUs from AMD, Intel, Nvidia and Qualcomm. Qualcomm's presence is interesting. With Windows RT all but moribund, Qualcomm's interest in that market may have seemed incidental. However, the fact that the company is involved with the DX12 standard could mean that the handset and tablet developer is serious about the Windows market in the long term."
Vigile writes "NVIDIA is launching the GeForce GTX 750 Ti today, which would normally just be a passing mention for a new $150 mainstream graphics card. But company is using this as the starting point for its Maxwell architecture, which is actually pretty interesting. With a new GPU design that reorganizes the compute structure into smaller blocks, Maxwell is able to provide 66% more CUDA cores with a die size that is just 25% bigger than the previous generation all while continuing to use the same 28nm process technology we have today. Power and area efficiency were the target design points for Maxwell as it will eventually be integrated into NVIDIA's Tegra line, too. As a result the GeForce GTX 750 Ti is able to outperform AMD's Radeon R7 260X by 5-10% while using 35 watts less power at the same time."
An anonymous reader writes "AMD's latest feature added to their open-source Radeon DRM graphics driver is VCE video encoding via a large code drop that happened this morning. A patched kernel and Mesa will now allow the Radeon driver with their latest-generation hardware to provide low-latency H.264 video encoding on the GPU rather than CPU. The support is still being tuned and it only supports the VCE2 engine but the patches can be found on the mailing list until they land in the trunk in the coming months."
Billly Gates points to this basic summary of the features of the recently released LibreOffice 2.4, writing: "In catching up with MS Office, the new LibreOffice 4.2 now has full Windows 7/8 integration including Aero peek, thumbnails, jumplists, and recent documents all from the taskbar. In addition, one weak area for LibreOffice has been enterprise network support and the lack of active directory tools: LibreOffice now has GPO and active directory support for system administrators to deploy and manage LibreOffice over corporate networks. LibreOffice also includes an expert configuration Window to assist power users and system administrators when deploying to hundreds of workstation at a time." Read on for some more details about the release, including some information about support for AMD's Mantle CPU acceleration support.
MojoKid writes "AMD has a new set of drivers coming in a couple of days that are poised to resolve a number of longstanding issues and enable a handful of new features as well, most notably support for Mantle. AMD's new Catalyst 14.1 beta driver is going to be the first publicly available driver from AMD that will support Mantle, AMD's "close to the metal" API that will let developers wring additional performance from GCN-based GPUs. However, the new drivers will also add support for the HSA-related features introduced with the recently released Kaveri APU, and will reportedly fix the frame pacing issues associated with Radeon HD 7000 series CrossFire configurations. A patch for Battlefield 4 is due to arrive soon as well and AMD is claiming performance gains in excess of 40 percent in CPU limited scenarios but smaller gains in GPU-limited conditions, with average gains of 11 — 13 percent over all." First time accepted submitter Spottywot adds some details about the Battlefield 4 improvements, writing that Johan Andersson, one of the Technical Directors in the Frostbite team, says that the best performance gains are observed when a game is bottlenecked by the CPU, "which can be quite common even on high-end machines." "With an AMD A10-7850K 'Kaveri' APU Mantle provides a 14 per cent improvement, on a system with an AMD FX-8350 and Radeon 7970 Mantle provides a 25 per cent boost, while on an Intel Core i7-3970x Extreme system with 2x AMD Radeon R9 290x cards a huge 58 per cent performance increase was observed."
MojoKid writes "AMD's Andrew Feldman announced today that the company is preparing to sample its new eight-core ARM SoC (codename: Seattle). Feldman gave a keynote presentation at the fifth annual Open Compute Summit. The Open Compute Project (OCP) is Facebook's effort to decentralize and unpack the datacenter, breaking the replication of resources and low volume, high-margin parts that have traditionally been Intel's bread-and-butter. AMD is claiming that the eight ARM cores offer 2-4x the compute performance of the Opteron X1250 — which isn't terribly surprising, considering that the X1250 is a four-core chip based on the Jaguar CPU, with a relatively low clock speed of 1.1 — 1.9GHz. We still don't know the target clock speeds for the Seattle cores, but the embedded roadmaps AMD has released show the ARM embedded part actually targeting a higher level of CPU performance (and a higher TDP) than the Jaguar core itself."
An anonymous reader writes "With the latest open source Linux code published today the AMD RadeonSI Gallium3D driver supports OpenGL 3.3 and GLSL 1.50; this is the open source Linux graphics driver used for Radeon HD 7000 series and newer, including the new Hawaii GPUs. The OpenGL 3.3 support appeared in patches spread across Mesa and LLVM that should appear in their next releases. It was also found that the RadeonSI driver is becoming a lot faster and starting to compete with Catalyst, AMD's notorious Linux binary driver."
diegocg writes "Linux kernel 3.13 has been released. This release includes nftables (the successor of iptables); a revamp of the block layer designed for high-performance SSDs; a framework to cap power consumption in Intel RAPL devices; improved squashfs performance; AMD Radeon power management enabled by default and automatic AMD Radeon GPU switching; improved NUMA and hugepage performance; TCP Fast Open enabled by default; support for NFC payments; support for the High-Availability Seamless Redundancy protocol; new drivers; and many other small improvements. Here's the full list of changes."
MojoKid writes "Of all the rumors that swirled around Kaveri before the APU debuted last week, one of the more interesting bits was that AMD might debut GDDR5 as a desktop option. GDDR5 isn't bonded in sticks for easy motherboard socketing, and motherboard OEMs were unlikely to be interested in paying to solder 4-8GB of RAM directly. Such a move would shift the RMA responsibilities for RAM failures back to the board manufacturer. It seemed unlikely that Sunnyvale would consider such an option but a deep dive into Kaveri's technical documentation shows that AMD did indeed consider a quad-channel GDDR5 interface. Future versions of the Kaveri APU could potentially also implement 2x 64-bit DDR3 channels alongside 2x 32-bit GDDR5 channels, with the latter serving as a framebuffer for graphics operations. The other document making the rounds is AMD's software optimization guide for Family 15h processors. This guide specifically shows an eight-core Kaveri-based variant attached to a multi-socket system. In fact, the guide goes so far as to say that these chips in particular contain five links for connection to I/O and other processors, whereas the older Family 15h chips (Bulldozer and Piledriver) only offer four Hypertransport links."
jones_supa writes "OpenGL debugging has always lagged behind DirectX, mainly because of the excellent DX graphics debugging tools shipping with Visual Studio and GL being left with APITrace. Valve's Linux initiatives are making game companies to think about OpenGL, and the video game company wants to create a good open source OpenGL debugger to improve the ecosystem. AMD and Nvidia have already expressed interest in helping them out. Valve has been developing VOGL mostly on Ubuntu-based distributions under Qt Creator. The software currently supports tracing OpenGL 1.0 through 3.3 (core and compatibility), and is expected to eventually support OpenGL 4.x. Many more details on VOGL can be found at Valve's Rich Geldreich's blog." This looks much nicer than BuGLe. Valve is using Mercurial for version control and they plan to throw it up on bitbucket under an unspecified open source license soon. It works with clang and gcc, but debugging with gcc is currently very slow (hopefully something that can be fixed once the source is available and the gcc hackers can see what's going on). The tracer's internal binary log format can be converted into JSON for use with other tools as well.
crookedvulture writes "AMD's next-generation Kaveri APU is now available, and the first reviews have hit the web. The chip combines updated Steamroller CPU cores with integrated graphics based on the latest Radeon graphics cards. It's also infused with a dedicated TrueAudio DSP, a faster memory interface, and several features that fall under AMD's Heterogeneous System Architecture for mixed-mode computing. As expected, the APU's graphics performance is excellent; even the entry level, $119 A8-6700 is capable of playing Battlefield 4 at 1080p with medium detail settings. But the powerful GPU doesn't always translate to superior performance in OpenCL-accelerated applications, where comparable Intel chips are very competitive. Intel still has an advantage in power efficiency and raw CPU performance, too. Kaveri's CPU cores are certainly an improvement over the previous generation of Richland chips, but they can't match the per-thread throughput of Intel's rival Haswell CPU. In the end, Kaveri's appeal largely rests on whether the integrated graphics are fast enough for your needs. Serious gamers are better off with discrete GPUs, but more casual players can benefit from the extra Radeon horsepower. Eventually, HSA-enabled applications may benefit, as well."
New submitter asliarun writes "David Kanter of Realworldtech recently posted his take on Intel's upcoming Knights Landing chip. The technical specs are massive, showing Intel's new-found focus on throughput processing (and possibly graphics). 72 Silvermont cores with beefy FP and vector units, mesh fabric with tile based architecture, DDR4 support with a 384-bit memory controller, QPI connectivity instead of PCIe, and 16GB on-package eDRAM (yes, 16GB). All this should ensure throughput of 3 teraflop/s double precision. Many of the architectural elements would also be the same as Intel's future CPU chips — so this is also a peek into Intel's vision of the future. Will Intel use this as a platform to compete with nVidia and AMD/ATI on graphics? Or will this be another Larrabee? Or just an exotic HPC product like Knights Corner?"
New submitter Kenseilon writes "Extremetech reports that the recent price hike of Litecoins has triggered yet another arms race for the *coinminers out there, leading to a shortage of AMD graphics cards. While Bitcoin mining is quickly becoming unfeasible for GPU rigs with general purpose graphics cards, there are several alternative currencies with opportunities. The primary candidate is now Litecoin, which has the aim of 'being silver if Bitcoin is gold' Swedish Tech site Sweclockers also reports [in Swedish] that GPU manufacturer Club3D have told them that miners are becoming a new important group of potential customers. However, concerns are being raised that this is a temporary boom that may hurt AMD in the long run, since gamers, their core consumer group, may not be able to acquire the cards and instead opt for Nvidia."
crookedvulture writes "AMD's recently introduced Radeon R9 290X is one of the fastest graphics cards around. However, the cards sent to reviewers differ somewhat from the retail units available for purchase. The press samples run at higher clock speeds and deliver better performance as a result. There's some variance in clock speeds between different press and retail cards, too. Part of the problem appears to be AMD's PowerTune mechanism, which dynamically adjusts GPU frequencies in response to temperature and power limits. AMD doesn't guarantee a base clock speed, saying only that the 290X runs at 'up to 1GHz.' Real-world clock speeds are a fair bit lower than that, and the retail cards suffer more than the press samples. Cooling seems to be a contributing factor. AMD issued a driver update that raises fan speeds, and that helps the performance of some retail cards. Retail units remain slower than the cards seeded to the press, though. Flashing retail cards with the press firmware raises clock speeds slightly, but it doesn't entirely close the gap, either. AMD hasn't explained why the retail cards are slower than expected, and it's possible the company cherry-picked the samples sent to the press. At the very least, it's clear that the 290X exhibits more card-to-card variance than we're used to seeing in a PC graphics product."
MojoKid writes "There's a great deal riding on the launch of AMD's next-generation Kaveri APU. The new chip will be the first processor from AMD to incorporate significant architectural changes to the Bulldozer core AMD launched two years ago and the first chip to use a graphics core derived from AMD's GCN (Graphics Core Next) architecture. A strong Kaveri launch could give AMD back some momentum in the enthusiast business. Details are emerging that point to a Kaveri APU that's coming in hot — possibly a little hotter than some of us anticipated. Kaveri's Steamroller CPU core separates some of the core functions that Bulldozer unified and should substantially improve the chip's front-end execution. Unlike Piledriver, which could only decode four instructions per module per cycle (and topped out at eight instructions for a quad-core APU), Steamroller can decode four instructions per core or 16 instructions per quad-core module. The A10-7850K will offer a 512-core GPU while the A10-7700K will be a 384-core part. Again, GPU clock speeds have come down, from 844MHz on the A10-6800K to 720MHz on the new A10-7850K but should be offset by the gains from moving to AMD's GCN architecture."
An anonymous reader writes "DragonFlyBSD 3.6 was released [Monday] with the big new features being dports, Intel and AMD Radeon KMS kernel graphics drivers, major SMP improvements, and improved language support. Dports is the new package management system based upon the FreeBSD Ports collection and replaces pkgsrc as the default; over 20k packages are available via dports. Major SMP scaling improvements come via reducing lock contention within the kernel and other multi-core enhancements. The Intel and Radeon graphics drivers on DragonFlyBSD were ported from the FreeBSD kernel, which in turn were ported from the upstream Linux kernel."
alphadogg writes "With memory, as with real estate, location matters. A group of researchers from AMD and the Department of Energy's Los Alamos National Laboratory have found that the altitude at which SRAM resides can influence how many random errors the memory produces. In a field study of two high-performance computers, the researchers found that L2 and L3 caches had more transient errors on the supercomputer located at a higher altitude, compared with the one closer to sea level. They attributed the disparity largely to lower air pressure and higher cosmic ray-induced neutron strikes. Strangely, higher elevation even led to more errors within a rack of servers, the researchers found. Their tests showed that memory modules on the top of a server rack had 20 percent more transient errors than those closer to the bottom of the rack. However, it's not clear what causes this smaller-scale effect."