Computing power has increased dramatically
bitcoin bulls often mention that the scarcity value of this cryptocurrency is the main reason for its continued rise. Bitcoin is similar to gold to some extent. The growth of its supply is extremely slow, and it is still slowing down. Its total supply will only reach 21 million
with the increasing interest of institutional investors and retail investors in bitcoin, global exchanges such as the Chicago Board of options (CBOE) have launched bitcoin futures contracts. This is likely to encourage more institutional investors to invest in bitcoin, while at the same time further curbing the price volatility of bitcoin
this much anticipated bitcoin futures trading has been launched on the Chicago Board of options exchange, which represents a significant step in the legalization of cryptocurrency. Futures is a derivative / financial instrument, which can force dealers to buy and sell an asset at a specific time and price
in short, it is a redistribution of computing power driven by interests.
Previously, e to the global epidemic, online ecation became popular overnight. Schools across the country have been "suspended", and the live broadcast platform is facing the influx of hundreds of millions of people. As a result, the servers of Alibaba, Huawei and Tencent cloud are under full pressure, and even "crash" to varying degrees. Once again exposed the weakness of the central server
what will happen in the future:
1. In the digital age today, the Internet has penetrated into all aspects of our lives
2. It has advantages, such as Internet, big data, artificial intelligence, Internet of things< p> 3. Some people really think that people will miss many opportunities in their life, but as long as they seize the most critical opportunities, life will changenote: let me take a look at this case, "download it to the computer, then change the suffix to. Zip, and then open it
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the significance and importance of calculation.
1. Calculation is the cornerstone of learning mathematics. Mastering calculation opens the door to the kingdom of mathematics. In teaching practice, there is such a phenomenon: although many students master the calculation method, they often make mistakes in calculation, The accuracy rate of calculation is very low. It not only directly affects the learning effect of word problems and application problems, but also seriously hinders the improvement of students' mathematics performance. Therefore, we must improve the accuracy rate of students' calculation. 2. Number and calculation will accompany one's whole life. A person needs to learn all the mathematics knowledge when he is an alt in middle school, Second, the reasons for the low accuracy rate of calculation.
1. When students analyze the causes of wrong questions, they often make mistakes, such as "reading wrong questions and ing wrong ones", "writing scribbled and ambiguous", "not making draft when calculating, adding or subtracting one digit leads to wrong whole questions", It seems that most of the reasons are as follows: & quot; Carelessness & quot; What is the cause of "carelessness"? There are only two aspects: one is that students' psychological quality is not mature enough, the other is that they have not formed good study habits. Therefore, cultivating students' good study habits is not only the requirement of quality ecation, but also the premise of improving the calculation accuracy.
2. At the same time, some students' calculation accuracy is not very high, It also reflects that the computing ability of these students needs to be improved (for example, they are not familiar with multiplication formula, carry addition and so on); It may lack a good habit of calculation, such as the habit of checking calculation. Many students ignore the role of "estimation" in calculation. This may have something to do with our usual teaching practice.
Third, measures to improve the accuracy of calculation, It is very necessary to correct the calculation errors and improve the accuracy of calculation to cultivate students' good learning attitude and calculation habits, and then improve the quality of teaching.
2. Do a good job of demonstration and teaching by words and deeds. The teacher is the example of students. In class, the board performance is in line with the norms, so as to achieve both oral and personal teaching, Teachers who require students to do it must do it first.
3. Encourage and persevere constantly. It takes a long time to form a good habit of calculation. To make the strict requirements persist, students must be encouraged to recognize the strict requirements of teachers and keep a lasting interest in implementing the calculation specifications, Students: 1, in accordance with the general order of calculation. Make clear the meaning of the problem, observe the characteristics of the problem, determine the order of calculation. 2, to develop a good habit of serious calculation. Clear data, draft in accordance with a certain order. 3, can not blindly pursue high speed. Rather slow than wrong, rather less than excessive.
4, specific methods:
1, strict calculation process, Standardizing the calculation of draft is the guarantee to improve the accuracy of calculation. Students are required to have standard calculation format, neat and correct writing, and neat homework and test papers. Draft is a necessary means for correct mathematical calculation, and many calculation errors are caused by Scribble and disorder of draft. In teaching, draft also requires students to write neatly and orderly, and try to do oral calculation as much as possible, Students are required to make a draft according to their usual requirements. The paper can be folded in half, and the draft should correspond to the questions. This is concive to students' self review in an orderly way, and there is no need to spend more time rewriting the draft. It saves time and effort to check directly. It is concive to cultivating students' rigorous, meticulous, honest and serious homework habits, overcoming the bad habit of scribbling and littering drafts, and helping teachers find and analyze the causes of errors, To help students to correct and control the future teaching.
2. To make students form a good habit of calculation, we must be strict, careful and persistent; If there are nonstandard calculation errors in the test, we should give detailed comments and teach methods in class; Students with repeated errors should be given a "small stove". Self check and mutual check should be carried out on the implementation of calculation specifications, so as to cultivate students' rigorous style of study from time to time and everywhere. At the beginning, students should correct drafts in detail as they do homework, and students should correct mistakes in drafts seriously. When students graally develop the habit, they should change detailed ones into simple ones, and simple ones into random ones, To sum up, the formation of good calculation habits of students, first, strict requirements, strict training. Second, to teach students some methods to make calculation correct and effective. Third, to actively ecate and encourage students to establish the confidence that they will be able to calculate correctly in psychology, and strive to calculate correctly in behavior, Will be able to promote students to improve the accuracy of calculation
Many students feel headache for mathematics, because the score of mathematics is not high every time, and many knowledge points are not very clear, so how can junior high school mathematics learn to effectively improve the score
how to learn junior high school mathematics can effectively improve scores
knowledge framework diagram
I believe that as long as the above points are achieved, there will be some changes in the score of this subject. Of course, in learning, planning is essential. No matter review or study, you need to make a professional plan to help yourself learn. In addition to the above points, the score of mathematics will make considerable progress, In learning, if you encounter problems that you can't solve, you need to ask for help from teachers or better students in time, so that you can solve the difficulties and won't have an impact on future learning. The above is how to learn junior high school mathematics. I believe that if you do well in these points, the overall score of each subject will rise
On September 19, Huawei Xinsheng community released the interview summary of Ren Zhengfei, founder of Huawei, to Thomas Friedman, columnist of the New York Times. In this interview, Ren Zhengfei said that the next frontier area Huawei will study is artificial intelligence, and Huawei will build a platform to support artificial intelligence“ Google and NVIDIA can do the same thing, but we are doing better now. "
Hou Jinlong said that Huawei will invest in chips according to the rhythm of "mass proction, R & D and planning". Therefore, Kunpeng and shengteng will continue to improve their competitiveness with the rhythm of launching one generation every year, while ensuring backward compatibilityHuawei's Atlas procts will not be sold to the outside world, but will be exported through Huawei's cloud service. At the conference, Huawei launched 69 cloud services based on Kunpeng and 43 cloud services based on shengteng, and announced that the prices of image search service and content audit service based on shengteng will be reced by 70%
in order to create a computing ecosystem, Huawei also announced that it will open source the server operating system Euler OS, the AI computing framework mindspre and the stand-alone database gaussdb OLTP on December 31 this year, the first quarter of next year and June next year respectively
computing power: in short, it is a quantitative indicator of the computing speed of your mining machine. For example, 1t computing power is the 12th power of 10 in 1s. If the 12th power of this 10 can work out the results that meet the conditions, it will be g. If not, it can be said that it is in vain
in the face of the exponential increase of data, computing power is the biggest demand for enterprises and institutions, and improving computing power requires higher performance CPU and GPU
last time, AMD processor pushed the computing power of HPC to billion times, but now AMD with epyc processor pushes the computing power of supercomputing to 10 billion times again. AMD's two E-class supercomputer systems, frontier and El Capitan, are scheled to be delivered in 2021 and 2023, respectively. They will achieve the expected processing performance of more than 150 exaflops (10 billion times) and 2 exaflops, respectively, and are expected to become the fastest supercomputer in the world
it is a big challenge for any manufacturer to improve the computing power in a short time. How did amd make such great progress? Let's start in 2017
in 2017, amd adopted a new Zen architecture, launched the first generation epyc processor, and dramatically increased the number of single processor cores to 32 cores. Two years later, the introction of the second generation epyc processor not only upgraded the architecture to zen2, but also reced the process technology from 14nm to 7Nm, which improved the IPC performance by 15%
compared with the Zen architecture, the new zen2 architecture optimizes the L1 instruction cache, doubles the operation cache capacity and floating point unit data bit width, and doubles the L3 cache to 16MB. The 64 core epyc processor easily has 128MB L3 cache. What's more, the second generation epyc adopts 7Nm process, which effectively reces the power consumption. Under 225W TDP, the number of cores can be increased to 64 cores, which makes its performance significantly improved
in the past year, the second generation of AMD epyc processor has achieved more than 140 world records, covering cloud computing, virtualization, high-performance computing, big data analysis and other fields, and also with strong performance to meet the increasing demand of enterprises or institutions for computing power
therefore, relying on the leading performance of epyc processor and ultra-high power consumption ratio, amd has not only won more market share and broken many world records, but also expanded its ecosystem.