supported multiple cores, including the operating system and all of Microsoft's applications, other leading American software vendors have already achieved most of the multithreading of their software. As for the Chinese and Asian markets, there has been great progress in implementing multi-threaded applications, so the main obstacle to software has been overcome. This year, Intel will be integrated into the dual-
Multi-core and multi-core heterogeneous systems are increasingly favored by ultra-large scale computers, such as the recently released global high-performance computing
Top500
Ranking first
IBM
Of
Roadrunner
Is to put your own
Cell
And
AMD
The haolong processors are mixed together. On the chip layer, including Intel,
AMD
And
NVIDIA
Are
successful. Linux always uses the same page table to manipulate code, whether in an Alpha AXP with a three-level page table structure or an Intel X86 processor with two-level page tables.
3.4 page allocation and recovery
Requests to physical pages in the system are very frequent. For example, when an executable image is transferred to the memory, the operating system must allocate a page for it. These pages must be released after image execution and
kernel/fork. c. The underlying processing code is located in include/linux/interrupt. h. The description of task_struct can be found in/linux/sched. h.
PCI
The PCI pseudo-device driver is located in drivers/pci. c and its general system definition is put in include/linux/pci. h. Each processor structure has a special pci bios code, where Alpha AXP is located in arch/alpha/kernel/bios32.c.
Inter-process communication
All the code is in the ipc directory. The system v ipc object contains an ip
Transferred from: http://blog.csdn.net/seawaywjd/article/details/6633640
Summary
Multicore processors are also known as on-chip multi-processor (chip multi-processor,cmp). Since 1996 Stanford University first introduced the on-chip multi-processor (CMP) idea and the first multi-core architecture prototype, to 2001 MM launched the first commercial multi-core processor POWER4, and then to 2005
Preface:
Modern CPUs all have pipelines and branch prediction functions. The accuracy of CPU branch prediction can reach more than 98%. However, if the prediction fails, the pipeline fails and the performance loss is very serious.
For details about the branch prediction technology used by the CPU, refer:
History and current example of research by processor branch Branch
Same-time multi-thread Processors
Use these features correctly to write efficient programs.
For example, when writing an if or
former has a separate graphics core and independent video memory, can meet the complex and large graphics processing needs, and provide efficient application of the image coding; Integrated graphics core is integrated into the motherboard on a separate chip. and the dynamic sharing part of the system memory used as video memory, so can provide a simple graphics processing capabilities, as well as a more fl
internal CPU, the performance of a larger increase. Known as the core graphics card, Intel hopes that the future integration of the GPU within the CPU can share some of the bus resources with the CPU, or even the future integration of the physical transistor resources, so that the CPU and the GPU completed a deep fusion.
Internal structure of internal core
technical knowledge and background allow me to write it mainly based on the Alpha AXP processor and arm processor. This book sometimes uses non-Intel hardware to describe some important points. It is worth noting that, no matter which platform is running, 95% of the Linux core code is the same. Similarly, 95% of the content in this book is about the machine-independent part of the Linux kernel.
This boo
We know that there are already several kinds of graphics cards, for example, independent graphics, core graphics, as well as integrated graphics, different graphics card positioning is different, a lot of friends for the core graphics, motherboard integrated graphics and independent graphics lack of knowledge, do not know what the difference between the three, the following article in the rookie friend for
K8 's success gave Intel blow, and the chip giant saw the grim picture. After the core processor was released, Intel recovered part of the "lost ground" and regained its crown of performance, and faced Intel's aggressive offensive, how could amd cope with no "big bang" in the past two years? Please look at the "hammer" that hit "Kourou".
A whole year late.
July
driver classes
IPC This directory contains code for the core interprocess communication
Modules This is just a directory to store the built-in modules.
FS All the file system code. is divided into sub-directories, each supporting file system one
Kernel the main core code. Similarly, the core code associated with the system is placed in the Arch/*/ker
Play Lol 3000 yuan dual-core dedicated display play League of Legends game configuration recommendations Accessory name Brand Model Reference Price Processor Intel Core G4500 (boxed) ¥549 Radiator Boxed built-in
Intel Core-frequency Acceleration technology is a unique feature of Intel's high-end processors and a new Intel technology. This technique can be understood as automatic overclocking. When the core-frequency acceleration, the CPU will automatically adjust the CPU frequency according to the current task amount, thus hea
),CellProcessor (1a -bitpowerpc+8a +coprocessor) and so on. Homogeneous multiprocessor is more,Exynos4412,Freescale i.mx6 dual and Quad series,TI OMAP4460 ,Intel 's Core Duo , Core2 Duo et. 3. Multi-core processor operating mode-SMP,AMP,BMPFrom the software point of view, there are three modes of operation of multi-core
can associate a priority with it to ensure that the key thread is processed by JVM before the secondary thread.
The second way to start a thread is to use a class that implements the Runnable interface, which is also defined in java. lang. This Runnable interface specifies a run () method-then the method becomes the main function of the thread, similar to the previous code.
Currently, the general style of Java programs is to support inherited interfaces. By using interfaces, a class can still
CPU is the core of the computer, and CPU is the most important CPU chip, in our computer processing data calculation, accept storage is through the CPU above the chip to execute. The core number of CPUs within the CPU largely determines the processor performance of the processor, so the multi core CPUs can be processor-more data at the same time, and improve perf
Intel Core-frequency Acceleration technology is a unique feature of Intel's high-end processors and a new Intel technology. This technique can be understood as automatic overclocking. When the core-frequency acceleration, the CPU will automatically adjust the CPU frequency according to the current task amount, thus hea
shared by all CPUs in the system, and the workloads are evenly distributed across all available processors.SMP Technology http://www.elecfans.com/baike/computer/fuwuqi/20091217137187.htmlSMP Build conditionsTo build an SMP system, the first key point is the need for a suitable CPU to match. We usually see the CPU is a single use, so do not see what the difference between them, but, in fact, support SMP function is not without conditions, arbitrarily take a few CPU to build a multi-processing sy
Intel High School and low-end duo mobile (laptop or UMPC) CPUs are divided into the following three series: Intel Core Duo T series -- Core Duo dual core; intel Pentium dual-core T seri
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.