am2 processors

in the Intel architecture. As the first article in this series, we will introduce how to use the Intel compiler to optimize program performance. How to Use the Intel compiler to optimize the performance of your programCompilers are the most basic tools in today's software development. The performance of the compiler directly affects the performance of the generated executable program. The quickest and simplest way to improve program performance is to use a compiler with optimized functions. In

about multiple processors? My mean value is 3.00, but the system is running normally! Wow, you have four processor hosts? Therefore, the average load is 3.00.In a multi-processor system, the average load is determined by the number of kernels. In 100% load computing, 1.00 represents a single processor, while 2.00 represents two dual processors, so 4.00 indicates that the host has four

center.(3) re-calculate the cluster centers as the "average" of the rows in (2 ).(4) Repeat, until the cluster centers no longer change or some other stopping criterion has been met. In the end, the K-means algorithm "Colors" all the rows in the data set, so similar rows have the same color. K-means in a parallel world To run this algorithm, it seems, at first, as though all the rows assigned to each cluster in step (2) need to be brought together to recalculate the cluster centers. However, th

task. "Exercise at half past three a.m.": 5.00. If your server load exceeds 5.00, you will lose your sleep, and you have to explain the cause in the meeting. In short, never let it happen. So what about multiple processors? My mean value is 3.00, but the system is running normally! Wow, you have four processor hosts? Therefore, the average load is 3.00. In a multi-processor system, the average load is determined by the number of kernels. In 100% load

especially important for the writing staff (specifically, the memory model is used for writingLock-free codeOfProgramPersonnel are very important !) The comrades who use the advanced synchronization structure are not so obvious. We have always stressed the following issues about the memory model:Your code is not necessarily executed as you think. In fact, this is not all. I forget that the memory model is determined by a level. I. Memory consistency Model To correctly compile parallel

at 0.70: "Requires investigation rules": if your system load is around 0.70 for a long time, you need to spend some time understanding the cause before it gets worse. "Now we need to repair the rule": 1.00. If your server system load lingers at 1.00 for a long time, you should solve this problem immediately. Otherwise, you will receive a call from your boss in the middle of the night. This is not a pleasant task. "Exercise at half past three a.m.": 5.00. If your server load exceeds 5.00, you wi

cpu can always read the latest data. Whether it is in its own cache, in the cache of other CPUs, or in the memory, this is cache consistency. Sequence consistencyThe so-called sequence consistency is a completely different concept from the cache consistency, although they are the product of the development of the processor. As compiler technology continues to develop, it may change the execution sequence of some operations to optimize your code. The concept of multi-emission and out-of-order ex

the peak value will exceed 1.00. However, if you keep this status for a long time, it means there will be problems. At this time, you should be very anxious. "So what do you say is the ideal load of 1.00 ?" Well, this is not exactly the case. Load 1.00 indicates that the system has no remaining resources. In actual situations, experienced System Administrators place this line at 0.70: "Requires investigation rules": if your system load is around 0.70 for a long time, you need to spend some time

need to take some time to understand the cause before it gets worse. * "Repair now": 1.00. * If your server system load lingers at 1.00 for a long time, you should solve this problem immediately. Otherwise, you will receive a call from your boss in the middle of the night. This is not a pleasant task. * "Exercise at half past three": 5.00. * If your server load exceeds 5.00, you will lose your sleep, and you have to explain the cause of this situation in the meeting. In short, never let it ha

Linux kernel supports floating point operations.Currently, most CPUs support the floating point operation unit FPU. FPU is placed out of the core of the processor as a separate coprocessor. However, for embedded processors, floating point operations are rarely used, some embedded processors will remove the floating point coprocessor.X86 processors generally have

Monolog, only 8 RFC 5424 levels, i.e. debug, info, notice, warning, error, critical, alert, emergency. But if we really have special needs, such as classification, we can add processors to Logger, of course, before the log messages are processed. I don't think I'll ever add ' processors ' to this life. Log level DEBUG (+): detailed debug information. Detailed Debug information INFO (a): Interesting

With the rapid upgrade of the notebook, you are dazzled by the wide array of cpus. I have found some relevant information to help you understand the specifications of the new and old CPUs! Released from Intel core processors, Intel Mobile processors include X, T, L, and U, Including: X (Extreme Segment), T (Mobile Highly Performance Segment), L (Mobile Highly Energy Efficient Segment), and U (Mobile Ultra H

. Home: http://www.ubuntu.com/Source: Manx (between England Island and Ireland) Isle of ManDesktop: GNOMEType: Beginners, Desktop, Server, Live Medium, NetbooksProcessor architecture: i386, PowerPC, SPARC64, x86_64Based on which release: DebianPros: Fixed release cycles and support deadlines; easy for beginners to learn; Rich documentation, both official and user-contributed.Cons: Lack of compatibility with DebianPackage management: Using the Deb package for the Advanced Package Managem

Desktop platform CPU model is not much, the optional motherboard is not much, AMD CPU with the motherboard appears to be a lot simpler. Due to AMD and Intel platform, corresponding to the compatible motherboard, this is a DIY novice friend need attention, if the AMD motherboard with the Intel processor, will make a joke, incompatible, bought also can't install. AMD CPU and motherboard matching At present, the AMD processor optional product model is not many, the main interface is divided int

URL, or can be threaded with the take-in -d parameters , or use multiple-d# use ' ' to string multiple parameters curl-x post-d "Param1=value1param2=value2" # can also use multiple '-d ', Effect curl-x post-d "param1=value1"-D "par Am2=value2 "Curl-x post-d" Param1=a 0space " #" a space "url encode the blank character will be encoded as '%20 ' as" A%20space ", after the code can directly use Curl-x POS T-d "Param1=a%20space"Post JSON format inf

Linux Basic Optimization Guide Code: when someone sees this title, is it necessary for linux to be optimized ?. Before answering this question, www.2cto.com asked a question about optimization ?, My idea is that there is no optimal solution, and what suits me is better. we need to back the desktop... Linux Basic Optimization Guide Code: when someone sees this title, they must be wondering "do linux need to be optimized ?". Before answering this question, www.2cto.com asked the question "What is

call the stored procedure for data insertion: // Call the stored procedure to insert a record bool cdbtestappdlg: insertrecord () {cadoparameter param1, param2, param3; cadocommand comm; If (conntodb () {comm. setconnection (m_pconnection); param1.setsize (20); param1.setname ("c_name"); param1.setdirection (adparaminput); param1.settype (advarchar); // varchar2param1. setvalue (cstring) "hello113"); // type conversion is required. The default parameter type is bool. Therefore, comm is incorrec