Line computing power
Publish: 2021-04-15 14:35:37
1. It's a good idea, but even if you calculate the data step by step, and then combine the data, you must connect multiple devices before. Since you want to connect, there is a problem of delay. Even if it's very small, there is still some, which is of little significance
2. 1、 Typical problems
typical problems are basic problems, and the basic problems in textbooks and reference books all belong to this category. When doing this kind of questions, we should have such an attitude: making questions is to test the mastery of knowledge points. In the process of making questions, we can't just do them for the sake of making questions. We should think actively and actively, so that we can understand and master knowledge more deeply, and the knowledge we have learned can become our own knowledge, so that we can have independent problem-solving ability
for example, the computation of linear algebra is relatively large, but the possibility of pure computation is relatively small. Generally, there is computation in proof and computation in abstraction. This requires candidates to pay attention to the strict logic of the proof questions, and master the basic use methods of some knowledge points in proving some conclusions. Although the examination of linear algebra can be very flexible, the use methods of these basic knowledge points are relatively fixed, as long as they are familiar with various splicing methods< Second, simulation problems are generally higher than real problems in terms of difficulty. For this kind of problems, it is used to expand the field of exercises, so don't worry too much about whether you do well. Even if you don't do well, you don't need to be too discouraged. If you can do it all, you should go directly to the test instead of the test
in addition, it is suggested that candidates should prepare two notebooks when reviewing. One is to sort out the knowledge points, formulas and theorems they don't understand in the review; the other is the wrong questions book, which can accumulate the wrong questions they encounter in the review. In the early stage of review, we can't see the important role of these two books, but the more we review, we will find the importance of these two books. These two books are the most suitable materials for us to review
finally, at this stage, I hope you can form a serious habit of doing problems. Many students will fail to get points even though they know how to do problems, mostly because they don't solve problems seriously. So at the beginning of the review, train yourself to use the draft paper reasonably, try to write more regular and serious, so as to rece the error rate. You should know that the big questions on the test paper are still better, there are still steps, and there is no point for the small questions
3. The resources of real questions over the years are limited. If you just do the questions, even if you do them three or five times, you can finish them at once. Therefore, when you do the real questions, you must devote yourself to doing them. Take the real questions of each year as examination questions, grasp the time, and control the time for each real question within two and a half hours, After finishing, according to the grading standard given by the examiners of postgraate entrance examination, score their own papers, record and analyze the mistakes in the papers, find out the places that do not conform to the answers given by the examiners, graally improve their own ideas, and graally move closer to the ideas of the examiners. In addition, in addition to doing real questions, you should also learn to summarize the real questions over the years, and list the test points in the real questions over the years into a table, which can help you predict the test points
in the end, I have to mention the spirit of making questions. Most of the examinees think that if they want to learn mathematics well, they can get high marks as long as they do more questions. In fact, it's not the case. It's very unlikely to get a high score by using sea fighting. Many students who got into famous universities with high marks mentioned it several times when they introced the learning methods of mathematics. However, it should be noted that they pay more attention to doing this set of questions over and over again, not simply repeating, but summing up experience and methods in doing the questions. Therefore, we need to strengthen the training of a certain number of problems, slowly improve their problem-solving speed and proficiency, and strengthen the in-depth understanding of knowledge points. Even if we only improve the computing ability, we also need to "gnaw" and "drill".
typical problems are basic problems, and the basic problems in textbooks and reference books all belong to this category. When doing this kind of questions, we should have such an attitude: making questions is to test the mastery of knowledge points. In the process of making questions, we can't just do them for the sake of making questions. We should think actively and actively, so that we can understand and master knowledge more deeply, and the knowledge we have learned can become our own knowledge, so that we can have independent problem-solving ability
for example, the computation of linear algebra is relatively large, but the possibility of pure computation is relatively small. Generally, there is computation in proof and computation in abstraction. This requires candidates to pay attention to the strict logic of the proof questions, and master the basic use methods of some knowledge points in proving some conclusions. Although the examination of linear algebra can be very flexible, the use methods of these basic knowledge points are relatively fixed, as long as they are familiar with various splicing methods< Second, simulation problems are generally higher than real problems in terms of difficulty. For this kind of problems, it is used to expand the field of exercises, so don't worry too much about whether you do well. Even if you don't do well, you don't need to be too discouraged. If you can do it all, you should go directly to the test instead of the test
in addition, it is suggested that candidates should prepare two notebooks when reviewing. One is to sort out the knowledge points, formulas and theorems they don't understand in the review; the other is the wrong questions book, which can accumulate the wrong questions they encounter in the review. In the early stage of review, we can't see the important role of these two books, but the more we review, we will find the importance of these two books. These two books are the most suitable materials for us to review
finally, at this stage, I hope you can form a serious habit of doing problems. Many students will fail to get points even though they know how to do problems, mostly because they don't solve problems seriously. So at the beginning of the review, train yourself to use the draft paper reasonably, try to write more regular and serious, so as to rece the error rate. You should know that the big questions on the test paper are still better, there are still steps, and there is no point for the small questions
3. The resources of real questions over the years are limited. If you just do the questions, even if you do them three or five times, you can finish them at once. Therefore, when you do the real questions, you must devote yourself to doing them. Take the real questions of each year as examination questions, grasp the time, and control the time for each real question within two and a half hours, After finishing, according to the grading standard given by the examiners of postgraate entrance examination, score their own papers, record and analyze the mistakes in the papers, find out the places that do not conform to the answers given by the examiners, graally improve their own ideas, and graally move closer to the ideas of the examiners. In addition, in addition to doing real questions, you should also learn to summarize the real questions over the years, and list the test points in the real questions over the years into a table, which can help you predict the test points
in the end, I have to mention the spirit of making questions. Most of the examinees think that if they want to learn mathematics well, they can get high marks as long as they do more questions. In fact, it's not the case. It's very unlikely to get a high score by using sea fighting. Many students who got into famous universities with high marks mentioned it several times when they introced the learning methods of mathematics. However, it should be noted that they pay more attention to doing this set of questions over and over again, not simply repeating, but summing up experience and methods in doing the questions. Therefore, we need to strengthen the training of a certain number of problems, slowly improve their problem-solving speed and proficiency, and strengthen the in-depth understanding of knowledge points. Even if we only improve the computing ability, we also need to "gnaw" and "drill".
3. It makes sense
"that designer can do CPU operation very well, but the data transmission ability is very weak"
ha ha, this kind of wonderful flower really exists. Because the data transmission rate is closely related to the cost, many low-end CPUs have very high main frequency and poor transmission bandwidth, which greatly reces the actual performance. This kind of CPU is to fool those who only look at the main frequency and greedy for small and cheap consumers.
"that designer can do CPU operation very well, but the data transmission ability is very weak"
ha ha, this kind of wonderful flower really exists. Because the data transmission rate is closely related to the cost, many low-end CPUs have very high main frequency and poor transmission bandwidth, which greatly reces the actual performance. This kind of CPU is to fool those who only look at the main frequency and greedy for small and cheap consumers.
4. See frequency for single thread operation
5. The training ways of operation ability are as follows:
1. Accurately understand and firmly grasp the concepts, properties, formulas, rules and some commonly used data required by various operations; The deep understanding of concepts, properties, formulas and rules directly affects the choice of methods and the speed of operation. The concept is fuzzy, the formula and the rule are ambiguous, which will certainly affect the accuracy of the operation. In order to improve the speed of operation, it is necessary to memorize some commonly used data. For example, the square of natural number within 20, simple Pythagorean number, special trigonometric function value,,,,, LG2, Lg3, e accurate to approximate value of 0.001, etc< Second, master the general methods and rules of operation, and flexibly use concepts, properties, formulas and rules for operation. Teachers can combine the content of teaching materials, compile and collect some flexible exercises, cultivate the flexibility of students' calculation, and guide students to collect, summarize and accumulate experience to form skilled skills, so as to improve the simplicity and rapidity of calculation< Third, pay attention to the typical demonstration of teachers and examples, and make clear the goal of solving problems, the steps of calculation and the basis. Through the typical demonstration, the transition from understanding knowledge to application knowledge is relatively smooth, thus forming the computing ability< The essence of mathematical operation is to dece the result from the known data and formula according to the definition and properties of operation, which is also a process of reasoning. Whether the operation is correct or not depends on whether the reasoning is correct. If the reasoning is not correct, the operation will be wrong. We should pay special attention to the equivalent transformation in operational reasoning< 5. Pay attention to the training of the ability of identity transformation of number and form
1. Sign transformation, for example, sign transformation when removing brackets and adding brackets
2. Reciprocal transformation, such as addition and subtraction, multiplication and division, power and root, differential and integral, etc
3. For example, A2 + B2 = (a + b) 2-2ab, etc< For example, given X-Y = 3, Y-Z = 5, finding x-z can decompose x-z = (X-Y) + (Y-Z)< For example, introcing auxiliary elements, constructing auxiliary functions, adding auxiliary lines, adding parameters and so on< Sixth, strengthen the operation practice. Any ability is formed and developed in certain practical activities. In order to effectively improve the students' operation ability, we must strengthen the practice. The practice should be purposeful, systematic and typical. Through changing, changing, solving and using one question, we can cultivate the proficiency, accuracy, flexibility and organization of calculation. In the form of question group training
1. Accurately understand and firmly grasp the concepts, properties, formulas, rules and some commonly used data required by various operations; The deep understanding of concepts, properties, formulas and rules directly affects the choice of methods and the speed of operation. The concept is fuzzy, the formula and the rule are ambiguous, which will certainly affect the accuracy of the operation. In order to improve the speed of operation, it is necessary to memorize some commonly used data. For example, the square of natural number within 20, simple Pythagorean number, special trigonometric function value,,,,, LG2, Lg3, e accurate to approximate value of 0.001, etc< Second, master the general methods and rules of operation, and flexibly use concepts, properties, formulas and rules for operation. Teachers can combine the content of teaching materials, compile and collect some flexible exercises, cultivate the flexibility of students' calculation, and guide students to collect, summarize and accumulate experience to form skilled skills, so as to improve the simplicity and rapidity of calculation< Third, pay attention to the typical demonstration of teachers and examples, and make clear the goal of solving problems, the steps of calculation and the basis. Through the typical demonstration, the transition from understanding knowledge to application knowledge is relatively smooth, thus forming the computing ability< The essence of mathematical operation is to dece the result from the known data and formula according to the definition and properties of operation, which is also a process of reasoning. Whether the operation is correct or not depends on whether the reasoning is correct. If the reasoning is not correct, the operation will be wrong. We should pay special attention to the equivalent transformation in operational reasoning< 5. Pay attention to the training of the ability of identity transformation of number and form
1. Sign transformation, for example, sign transformation when removing brackets and adding brackets
2. Reciprocal transformation, such as addition and subtraction, multiplication and division, power and root, differential and integral, etc
3. For example, A2 + B2 = (a + b) 2-2ab, etc< For example, given X-Y = 3, Y-Z = 5, finding x-z can decompose x-z = (X-Y) + (Y-Z)< For example, introcing auxiliary elements, constructing auxiliary functions, adding auxiliary lines, adding parameters and so on< Sixth, strengthen the operation practice. Any ability is formed and developed in certain practical activities. In order to effectively improve the students' operation ability, we must strengthen the practice. The practice should be purposeful, systematic and typical. Through changing, changing, solving and using one question, we can cultivate the proficiency, accuracy, flexibility and organization of calculation. In the form of question group training
6. 17 billion times per second. 1. The application of supercomputer is mainly in scientific computing, which is often involved in solving linear equations. The more specialized term is the so-called matrix operation, so the most mainstream evaluation software Linpack evaluates the operation efficiency of computer in the basic operation of matrix. 2. There is no doubt that floating-point operations are more complex than others
7.
Generally speaking, the computing power is affected not only by the processor, but also by the chipset, memory and hard disk
from the perspective of parameters, performance
processor: model, core, main frequency, front-end bus, cache
chipset: type
memory: type and capacity
hard disk: capacity, cache, speed
it can be seen from the configuration of a laptop that the processor, chipset and memory are the key to the performance. For example, the processor model, main frequency, chipset model, memory type, capacity; We can only see the size of the capacity of the hard disk in the configuration, but we can't know the speed and cache size (except for software testing)
the strength of the overall computing performance is closely related to the balance of the configuration of the above four main components. If the processor and hard disk are compared to the two sides of a river, then the memory is the bridge connecting the two sides. For example, the wider the "bridge", the more people will pass at the same time. Therefore, large capacity memory has an absolute advantage over small capacity memory. If the "bridge" is narrow, there will be a bottleneck between the processor and the hard disk, which will affect the computational performance in actual use. Chipsets mainly support al channel memory. At present, almost all the chipsets used in commercial laptops support al channel memory, so we won't give a detailed description here
e to different batches of laptops with the same model and configuration, there will be some differences in the configuration of hard disks. These differences are shown in the speed of the hard disk, cache. The higher the speed of the hard disk and the larger the capacity of the single chip, the more data can be read per unit time
8. Line, test thread
9. I feel that you can find the videos and basic ability calculation of teaching on the Internet. The most important thing is to practice more.
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