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."

SmartAboutThings writes "Chip maker AMD has announced that it's won 2 CES Innovation Awards for a gaming tablet the company plans to show off at the Consumer Electronics Show in January. The device is called "Project Discovery" and will come with AMD's Mullins chip that is a 64-bit, x86-based chip, perfectly suitable for Windows 8.1. The low-power Mullins APU (accelerated processing unit) is AMD's answer to Intel, Nvidia and Qualcomm, aimed at fanless tablets, ultrathin notebooks, and 2-in-1 devices. The 28nm processor is expected to consume as little as 2 watts of energy while in use. The obtained images show that the upcoming AMD tablet is quite similar to Razer Edge."

An anonymous reader writes "There's many improvements due in the Linux 3.13 kernel that just entered development. On the matter of new hardware support, there's open-source driver support for Intel Broadwell and AMD Radeon R9 290 'Hawaii' graphics. NFTables will eventually replace IPTables; the multi-queue block layer is supposed to make disk access much faster on Linux; HDMI audio has improved; Stereo/3D HDMI support is found for Intel hardware; file-system improvements are on the way, along with support for limiting the power consumption of individual PC components."

MojoKid writes "The seemingly never-ending onslaught of new graphics cards as of late continues today with the official release of the AMD Radeon R9 270. This mainstream graphics card actually leverages the same GPU that powered last-year's Radeon HD 7870 GHz Edition. AMD, however, has tweaked the clocks and through software and board level revisions updated the card to allow for more flexible use of its display outputs (using Eyefinity no longer requires the use of a DisplayPort). Versus the 1GHz (GPU) and 4.8Gbps (memory) of the Radeon HD 7870 GHz Edition, the Radeon R9 270 offers slightly lower compute performance (2.37 TFLOPS vs. 2.56 TFLOPS), but much more memory bandwidth--179.2GB/s vs. 153.6GB/s to be exact. AMD and its add in board partners are launching the Radeon R9 270 today, with prices starting at $179. The Radeon R9 270's starting price is somewhat aggressive and once again puts pressure on NVIDIA. GeForce GTX 660 cards, which typically performed lower than the Radeon R9 270 are priced right around the $190 mark. Along with this card, AMD is also announcing an update to its game bundle, and beginning November 13 Radeon R9 270 – R9 290X cards will include a free copy of Battlefield 4. NVIDIA, on the other hand, is offering Splinter Cell: Blacklist and Assassins Creed – Black Flag, plus $50 off a SHIELD portable gaming device with GTX 660 and 760 cards."

MojoKid writes "At APU13 today, AMD announced a full suite of new products and development tools as part of its push to improve HSA development. One of the most significant announcements to come out the sessions today-- albeit in a tacit, indirect fashion, is that Kaveri is going to pack a full 512 GPU cores. There's not much new to see on the CPU side of things — like Richland/Trinity, Steamroller is a pair of CPU modules with two cores per module. AMD also isn't talking about clock speeds yet, but the estimated 862 GFLOPS that the company is claiming for Kaveri points to GPU clock speeds between 700 — 800MHz. With 512 cores, Kaveri picks up a 33% boost over its predecessors, but memory bandwidth will be essential for the GPU to reach peak performance. For performance, AMD showed Kaveri up against the Intel 4770K running a low-end GeForce GT 630. In the intro scene to BF4's single-player campaign (1920x1080, Medium Details), the AMD Kaveri system (with no discrete GPU) consistently pushed frame rates in the 28-40 FPS range. The Intel system, in contrast, couldn't manage 15 FPS. Performance on that system was solidly in the 12-14 FPS range — meaning AMD is pulling 2x the frame rate, if not more."

An anonymous reader writes "Nvidia lifted the veil on its latest high-end graphics board, the GeForce GTX 780 Ti. With a total of 2,880 CUDA cores and 240 texture units, the GK110 GPU inside the GTX 780 Ti is fully unlocked. This means that the new card has an additional SMX block, 192 more shader cores, and 16 additional texture units than the $1,000 GTX Titan launched back in February! Offered at just $700, the GTX 780 Ti promises to improve gaming performance over the Titan, yet the card has been artificially limited in GPGPU performance — no doubt in order to make sure the pricier card remains relevant to those unable or unwilling to spring for a Quadro. The benchmark results simply illustrate the GTX 780 Ti's on-paper specs. The card was able to beat AMD's just-released flagship, the Radeon R9 290x by single-digit percentages, up to double-digits topping 30% — depending on the variability of AMD's press and retail samples."

crookedvulture writes "The back and forth battle for PC graphics supremacy is quite a thing to behold. Last week, Nvidia cut GeForce prices in response to the arrival of AMD's latest Radeons. That move caused AMD to rejigger its plans for the new Radeon R9 290, which debuted today with a higher default fan speed and faster performance than originally planned. This $400 card offers almost identical performance to AMD's flagship R9 290X for $150 less. Indeed, it's often faster than Nvidia's $1000 GeForce Titan. But the 290 also consumes a lot more power, and its fan spins up to 49 decibels under load. Fortunately, the acoustic profile isn't too grating. Radeon R9 290 isn't the only new graphics card due this week, either. Nvidia is scheduled to unveil its GeForce GTX 780 Ti on November 7, and that card could further upset the balance at the high end of the GPU market. As AMD and Nvidia trade blows, PC gamers seem to be the ones who benefit." Additional reviews available from AnandTech, PC Perspective, Hot Hardware, and Tom's Hardware.

An anonymous reader writes "Linus Torvalds announced the Linux 3.12 kernel release with a large number of improvements through many subsystems including new EXT4 file-system features, AMD Berlin APU support, a major CPUfreq governor improvement yielding impressive performance boosts for certain hardware/workloads, new drivers, and continued bug-fixing. Linus also took the opportunity to share possible plans for Linux 4.0. He's thinking of tagging Linux 4.0 following the Linux 3.19 release in about one year and is also considering the idea of Linux 4.0 being a release cycle with nothing but bug-fixes. Does Linux really need an entire two-month release cycle with nothing but bug-fixing? It's still to be decided by the kernel developers."

An anonymous reader writes "Intel shipped open-source Broadwell graphics driver support for Linux this weekend. While building upon the existing Intel Linux GPU driver, the kernel driver changes are significant in size for Broadwell. Code comments from Intel indicate that these processors shipping in 2014 will have "some of the biggest changes we've seen on the execution and memory management side of the GPU" and "dwarf any other silicon iteration during my tenure, and certainly can compete with the likes of the gen3->gen4 changes." Come next year, Intel may now be able to better take on AMD and NVIDIA discrete graphics solutions."

Billly Gates writes "AMD may have trouble in their CPU department with Intel having superior fabrication plants. However, in the graphics market with GPU chips AMD is doing well. AMD earned a very rare Elite reward from Tomshardware as the fastest GPU available with its fastest r9 for as little as $550 each. NVidia has its top end GPU cards going for $1,000 as it had little competition to worry about. Maximum PC also included some benchmarks and crowned ATI as the fastest and best value card available. AMD/ATI also has introduced MANTLE Api for lower level access than DirectX which is cross platform. This may turn into a very important API as AMD/ATI have their GPUs in the next generation Sony and Xbox consoles as well with a large marketshare for game developers to target"

MojoKid writes "AMD has launched their new top-end Radeon R9 290X graphics card today. The new flagship wasn't ready in time for AMD's recent October 8th launch of midrange product, but their top of the line model, based on the GPU codenamed Hawaii, is ready now. The R9 290 series GPU (Hawaii) is comprised of up to 44 compute units with a total of 2,816 IEEE-2008 compliant shaders. The GPU has four geometry processors (2x the Radeon HD 7970) and can output 64 pixels per clock. The Radeon R9 290X features 2816 Stream Processors and an engine clock of up to 1GHz. The card's 4GB of GDDR5 memory is accessed by the GPU via a wide 512-bit interface and the R290X requires a pair of supplemental PCIe power connectors—one 6-pin and one 8-pin. Save for some minimum frame rate and frame latency issues, the new Radeon R9 290X's performance is impressive overall. AMD still has some obvious driver tuning and optimization to do, but frame rates across the board were very good. And though it wasn't a clean sweep for the Radeon R9 290X versus NVIDIA's flagship GeForce GTX 780 or GeForce GTX Titan cards, AMD's new GPU traded victories depending on the game or application being used, which is to say the cards performed similarly."