Product Manager interpretation of new AMD Barcelona Hao long processor

The "Barcelona" Hao long processor is AMD's four-core processor platform, released last September. On May 20, at a media communication meeting at the Kunming Hotel in Beijing, the product manager of the AMD China Server and Workstation, Mr. Liang Hongwei, introduced the latest technical features of the latest third generation Barcelona, according to Mr. Liang Hongwei, The third generation of Barcelona in addition to a major internal flaw in the processor repair, overall performance has been fully upgraded, the improvement of virtualization performance is particularly prominent.

Five features improve performance per watt

&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Mr. Liang Hongwei said that the new generation of Barcelona from the point of view of the processor in the energy-saving aspects of further optimization, reduce the CPU itself on the server's energy consumption. Using independent dynamic Core technology, Low-power DDR2 memory, dual dynamic power management and so on energy-saving technology. Now many servers can be automatically based on the workload of intelligent adjustment, the CPU can be based on the system working state, the frequency of their own and work voltage to mediate, reduce their own energy consumption. The new Barcelona also support these industry's advanced energy-saving technologies, and these technologies will be automatically turned on after startup.

Independent Dynamic Core technology: Barcelona's four core can be independently based on the four core load of the frequency adjustment. The previous dual-core processors, including some of the industry's other processor products, are bound by a certain limit, typically two groups of units. So there is no such flexibility as Barcelona in regulating the continuity of the core.

Coolcore Technology: In addition, the Coolcore technology will automatically adjust power supply according to the workload, and some floating point units inside the processor will hibernate. When working in a certain part, automatically adjusts the different parts of the workload. When memory is read and written in bulk, it closes the unwanted parts

Low-power DDR Memory: AMD has been using Low-power DDR2 memory, the same memory can produce about 8 watts of energy gap.

Dual Dynamic power management: Nova Bacerona dual dynamic power management can separate the core power supply and the memory controller. Especially in the external application of the core power supply and memory controller power is no longer involved, reduce core energy consumption.

In the performance aspect, the entire operation width reaches 128 bits, the first level instruction's cache and the data cache channel have doubled. Ensure that Barcelona has multiplied its performance in processing multimedia or handling floating-point. AMD also optimizes the controller to support larger-page operations to meet the needs of large-load applications. Especially for the application of virtualization features, high memory requirements, new Barcelona and dual-core memory performance increased by 50%.

Share level Three cache: at the same time, the new generation of Barcelona introduced the concept of "write burst", the buffer cache after the full write back to memory, which can improve memory efficiency, so that the memory run faster. At the same time, a shared level three cache is introduced, allowing some jobs to be dynamically allocated between multi-core processor cores through shared level three caching. The current size is 2GB and can be increased to 6GB when full-circle improvements are introduced.