There is a new security warning for some people running virtualized systems on Intel CPUs. According to researchers at US CERT (Computer Emergency Readiness Team) the issue exists with some 64-bit operating systems when running on a hyper visor style host machine (also if the host OS is 64-bit). The vulnerability includes a method for escalation of privileges and a potential guest to host escape.
You know, there is a certain irony when a company brags about a product that contains their competitor’s hardware. Unfortunately for AMD that is exactly the position they are in right now. AMD recently bought the company Seamicro (for a hand sum) for the purposes of gaming their interconnect technology. Intel picked up Cray’s interconnect unit shortly after, but there is talk that their deal pre-existed the AMD one. However, regardless of who bought what first AMD bought the whole company while Intel only picked up a certain division.
It looks like Acer plans to launch a new tablet. The unit price of this new tablet should not exceed $ 100, which will align the device with the cheapest Android tablets that are out on the market. However, a low price does not mean that the device itself will be bad; on the contrary it's a pretty decent bang for buck.
Sharp's business woes could find help in Apple and Intel, according to Japanese sources. The two companies are reportedly just some of many interested to invest in the ailing Sharp. Even though Sharp is a world known brand they have had very poor financial results in the last few years It has even come to the point where they are having doubts that the company can continue to operate.
The Titan, a supercomputer that was created by adding nVidia's Tesla GPUs to existing AMD Opterons in the Jaguar supercomputer, has become officially the fastest supercomputer in the world. The Titan system installed at Oak Ridge National Laboratory in the U.S. came out on top as expected, with amazing performance of 17.52 petaflops. U.S Secretary of Energy Steven Chu indicated that “The nation that leads the world in high-performance computing will have an enormous competitive advantage across a broad range of sectors, including national defense, science and medicine, energy production, transmission and distribution, storm weather and climate prediction, finance, commercial product development, and manufacturing“, and without a doubt Titan will bring that.
A Rumor popped up today that claims that Intel’s 14nm Broadwell might be pushed back to 2H 2014. This information comes as a slide that was posted on the site VR-Zone. In the slide it seems to show that the second generation of Haswell is now slated for release later than originally expected 2Q 2014 and with Boradwell slipping with it. The new information (if accurate) means that Intel will be pushing back their expected “tick” for desktop and dropping in a refresh instead (another “tock”?).
Well the cat is out of the bag now and the winner is a new tablet called Surface from Microsoft. The thin (.5 inches) tablet was shown off today at the big event that Microsoft had planned for a long time. From the pictures we have seen it looks like a nice device 10.6 inches long with a gorilla glass display, full sized USB port, MIMO antenna for WiFi a track pad, 64 or 128GB of storage, and a built in kickstand. There is just one problem; Microsoft’s partners. By entering into the market like this Microsoft runs the risk of alienating their major partners for Windows based tablets.
Two more pieces of the puzzle are falling into place with the move away from silicon in microprocessors. Silicon has been the mainstay for creating processors for… well for a very long time. However, it has its limitations as the need to make the transistors smaller continues to increase. Even if you are not a believer in More’s Law you still cannot get around the fact that processors (GPU CPU and “other”) are all growing more complex. This means that the number of components continues to grow and we are faced with a couple of choices; either die in the vacuum of space or… no wait that is someone else. The choices are actually very clear; make the processor dies larger and larger or shrink the manufacturing process.
Some specs on AMD’s next generation CPU Called Bulldozer have found their way on to the Internet. In what appears to be a conglomeration of leaked slides and other info from around the web. We took a look at some of this and compared it to what we know about AMD’s existing CPU architecture as well as what Intel has to offer with their Core line up.
First let’s talk about the existing AMD CPUs and why they tend to be so far behind Intel in some performance tests. The biggest issue that we have found is in the memory controller. Where the average Intel CPU shows 18-21GB/s worth of bandwidth even AMD’s top of the line Phenom II X6 tops out at between 14-16GB/s. This is a serious issue when you are dealing with multiple CPU cores and applications that are getting more and more bloated. But why is this an issue? One of the reasons is AMD’s caching structure. Back in the days when AMD was on top their memory and cache performance was a key component of this success. Part of this was also due to the extremely low latency of DDR (I can remember buying CAS 1 DDR modules which just flew). Then when the AM2 CPUs came out with reduced cache sizes and their DDR2 controllers (which were little more than the original IMCs improved to support DDR2) the much higher latency had a huge impact on AMD’s performance especially with the smaller cache available to the CPU cores. So while we knew the CPU was improved, the actual performance was negligible.
Moving forward into the Phenom and Phenom II AMD had even more problems with memory performance on these CPUs this was despite them trying to add in more cache (and associations). The issue still revolved around the fact that the IMC for these processors had still not changed much in terms of core design. Nor had the caching structure; sure it had gotten larger but its overall performance had not improved much.
Now for comparison let’s talk about the technology behind each IMC. AMD’s Phenom II has a 144-bit DDR3 controller under the hood which according to AMD should be able to get you up to 21GB/s of memory bandwidth. The fact that we have never seen that is due to the cache structure each CPU core has two 64KB L1 cache blocks (Data and Instruction) 512KB (16-way associative) to work with while the total L3 shared Cache is limited to 6MB (64-way Associative).
Compared to Intel’s Core IMC (dual channel only) the CPU has two 64-bit Memory controllers, which allows their very different caching structure to operate a little more efficiently. Intel’s Core i7 has two levels of L1 cache per core (again Data and Instruction) each are 32KB while the L2 cache is at 256KB per core (only 8-way associative) and the L3 cache is bumped up to 8MB (16-way associative). Now that 8MB is also shared with the IGP that is on the Core i7 and is also stretched by the extra thread per CPU, but the core design allows it to operate in a way that AMD’s just cannot (at this time). There is also a lot to be said for the streamlined instruction in the new Core CPUs as well as the smaller process size.
Bulldozer, on the other hand, shows up with two 72-bit wide DDR3 memory controllers (which still add up to 144-bits) this serves four Bulldozer modules (each has two Cores) . The Caching structure is also different you get L1 at 128KB (still broken into two 64 KB blocks), 8MB of L2 Cache (2MB per Bulldozer Module) and 8MB of L3 Cache. Both the L2 and L3 are 16-way associative. The last is interesting as it moves away from the massive 64-way Association that Phenom II had.
Of course we are still only seeing 1MB of L3 per real core, but we might have hope for AMD yet. That is IF these changes to the caching and memory will amount to something. Time will tell on this one as we all know and we all are certainly waiting to see just how this new CPU (the first real new CPU in a long time) from AMD will do. I would love to see this new CPU show that AMD can still produce great products, after all it will only push Intel in making improvements of their own and at that point… the consumer wins.
Image and source ComputerBase.de
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At CES 2010 we watched as the “PC” world began to gear up for its onslaught into the tablet market. Many at the time were still claiming that Apple was going to hold the market simply because they had a very big foot hold (and still do). However as we watched press briefings from Asus, Lenovo, nVidia, AMD, and Intel we saw something very interesting; the move to tablets that make sense for everyone. We are not talking about the choice of OS here either.