With further research, we will gradually come into contact with your computer configuration patterns, and design principles. In these, solving a computer is a very important concept that we need to understand very well.I. Preliminary heats:(1) CountBefore contacting the addressing method, we also need to understand the concept of the operand, depending on how the operand is stored, we can divide the operand into 3 classes,1. Immediate operation number: The operand is included in this instruction
, %rcx)fadd %st(0), %st(1)fcmove %st(1), %st(0)faddp %st(0), %st(1) fstpl (%rdi, %rax)add $(8 * 1024), %rcxadd $8, %raxsub $1, %r8jne opt_processsub $1, %r9jne opt_loopret
The only difference between opt_calc and naive_calc is that opt_calc has two prefetch commands.
Below are the test functions in C language:
#include
In order to increase the calculation cycle, multiply by 2.
The performance of opt_calc can be increased by about 8% to 20% in Mac Mini
Q1 # What is the role of the define barrier () _ ASM _ volatile _ ("": "Memory") Macro?
A: This macro is defined in the blob-2.0.5-pre2/include/BLOB/util. h and is used multiple times in the blob-2.0.5-pre2/src/BLOB/intel16.c. According to expert guidance from the oldlinux.org forum, I found the macro explanation in section 5.3.2 of ulk2: the macro, however, forbids the complier to reshuffle the instructions. that is, the macro prohibits the compiler from re-arranging the (assembly language) com
We can use/proc/cpuinfo to view CPU information. This file contains the data section of each processor on the system. There are six entries in the/proc/cpuinfo description for multi-core and super-thread (HT) technical checks: processor, vendor id, physical id, siblings, core id and cpu cores.
(1) processor: including the unique identifier of the logical processor.
(2) physical id: including the unique id
A few days ago, at the 10th anniversary of Intel China Research Center and the 2008 Intel China Research Forum held in Beijing, Kang kaiwen, Senior academician of Intel Enterprise Technology Division and director of the Communication Technology Laboratory(Kevin Kahn), academician of Intel digital enterprise division an
1. In intel format, most of them use upper-case letters (both in lower case) and lower-case letters in att format.
2. In att format, Register names must be prefixed with "%", which is not required in intel.
3. The original operation of the command is different from that of the destination operand. For example, if the eax value is passed into the EBX command, in Inte
brillo* is a solution from google* for building connected devices. Incorporating aspects of the android* platform, Brillo brings security, local and Inter-device service compatibility, and A modular approach to system for your Intel IoT technology. Verified functionality with Brillo for the Intel? Edison Board results in a versatile and speedy Time-to-market platform for scaling your projects beyond proof
The intel® realsense ™SDK architecture is completely different from its predecessor systems-the intel® perceptual computing SDK. If you use the Intel Perceptual Computing SDK for application development, you will soon discover that the new SDK provides an enhanced programming model that allows access to features through several common application development fram
Intel Galileo Gen 2 Machine Road
In fact, the first time I heard to make this board when I was refused, because, you can not let me, I immediately go to engage, the first I want to try, because I do not want to put some special stunt up, board "crashed" a bit, very good, very good, so that people will scold me, there is no such board, To prove that the Intel board is fake. Later I also confirmed th
The afternoon played a few dota2 feeling fluent is very good, write something to record. Use ArchLinux in general will use search engines, so just say the need to pay attention to the place.1. Steam comes with an OpenGL library that is outdated, and execution may complain about things like "Cannot find OpenGL GX", see archwiki"steam" entries, and remove several libraries from steam.2. But after removing the libraries from steam you will need to install a new version of the library in the system,
Stick in ask this ask that noon wake up good, afternoon played a few dota2 feeling fluent degree is very good, write something to record a bit. Use ArchLinux in general will use the search engine, so just say need to pay attention to the place.1. Steam comes with an OpenGL library that is outdated and runs the possibility of complaining about things like "Cannot find OpenGL GX", looking at archwiki"steam" entries, and removing several libraries from steam.2. But after removing those libraries th
Intel Smart Connect technology abbreviation Isct,intel for intelligent connections, this technology provides an "instant" networking feature that can "update" Application data over the Internet when the platform is in sleep (standby) mode. This means that the technology is to regularly wake up the computer from sleep, but do not open the screen, networking for a period of time so that the program has the op
Beijing Time September 10 Noon news, according to foreign media reported today, AMD Global marketing vice President Leslie Soben (Leslie Sobon) in the media interview that AMD is ready to change marketing strategy, no longer compete with Intel performance.
Surrender in Disguise
Soben says users don't need to know the technical details of microprocessors, and what's more important for them is what the computer with the chip can handle. The new market
We have probably seen AMD or WIndows Home Server hardware products produced by VIA. Intel has decided to release its own consumption-level network attached storage Server, which is a Windows Home Server similar product consisting of Intel sayang processors.
The new SS4200x Server will have two specifications: hardware without pre-installed systems, and a complete system equipped with EMC-designed Linux Serv
Google launched its Global Chinese name in Beijing the day before yesterday to be closer to Chinese users. Yesterday Baidu sent a message about its deep alliance with IT giant intel.
This is less than a month before Baidu's alliance with Nokia. In March 19 this year, Baidu reached a strategic partnership with Nokia, the mobile phone giant, to implant its search into Nokia's mobile phone, to combat Google Sony Ericsson's mobile search alliance.
Som
Intel chief technology officer: the gap between man and machine intelligence will disappear in 2050
On June 23, August 21, at the Intel Information Technology Summit, Intel chief technology officer Justin looked forward to the exciting computing future at the summit. He believed that by 2050, technology will bring machine intelligence closer to huma
Intel + NVIDIA dual-graphics 3D Game configuration in Archlinux (dota2 @ steam)
In the post bar, I asked this question about what I did after I woke up at noon. After playing dota2 in the afternoon, I felt that the smoothness was quite good. I wrote something to record it. Archlinux generally uses search engines, so you only need to pay attention to them.
1. The OpenGL library that comes with steam is outdated. Running may complain about "Cannot find
1. vasp4.6 is a commercial software for Quantum Chemistry computing. Here is the source code package. From Austria. This software can also be used in physics for molecular dynamics analysis.
2. Declare that vasp4.6 cannot be compiled on the intel Fortran compiler 8 series. A fortcom internal error is reported. This is a compiler bug.
3. We recommend that you compile VASP on Intel Fortran compiler V7.
1, problem descriptionWhen generating the firmware for Atmega128, the format is often specified as "intel-extended", as follows:Today to generate a new version of the program with boot, which involves the work of hex splicing.So the first thing to figure out is what exactly is the Intel hex format?2, the specific format of Intel hexThe
/ed/local--prefix=/home/ed/makeinstallAmong them, the more prone problem is the installation of HDF5, see HDF5 official documentationAfter the success, you can do netcdf-c and Netcdf-fortran library installation, there is a problem to note: Compile the installation of the compiler and you will compile your FORTRAN code using the same compiler, No one will get an error when compiling the FORTRAN source code which is used in the NETCDF library. Take me for example: I usually use the
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.