EB computing power

1. In this era, it is impossible for a single hard disk to be 1PB. What we need is a server, which is a pile of hard disks. Then we rely on the server operation to make the pile of hard disks into a whole. 1PB is about 100 10t hard disks, 3000 yuan each. The optical hard disk is 300000 yuan, and the server including the transmission network is tens of thousands, so 1PB hard disk is 400000 yuan in theory
in addition to 1eb, this is not so simple. This is 1000 times of the above. First of all, 400000 × 100 = 400 million, and then you need a set of very advanced transmission system to connect them. Because the data is too large, the ordinary transmission method may not be able to read it for a year. You need to cooperate with high bandwidth, optical fiber, processor with strong computing power and so on to make such a large database become a whole and a "hard disk". Therefore,
this hard disk may be at least 1 billion to buy, because it is not available now, so people need to design and make a special one.

2.

In order to give you more comprehensive information, we calculated from three aspects, hoping to help you

1. Conservative expected return

3. A hydraulic dog was found

4.

CristianoAmon, President of Qualcomm Corp, at the press conference of SnapdragonRide, shows a combination of SoC, accelerator and automatic driving software stack, showing SnapdragonRide (Graphic source CNET/James Martin)

SnapdragonRide, which provides an extensible solution for automobile manufacturers, which can provide support for self driving vehicles in three sub fields, namely

1, L1 / L2 active safety ADAS -- for vehicles with automatic emergency braking, traffic sign recognition and lane keeping assistance

2, L2 + ADAS -- for vehicles that can drive automatically on expressways, support self-service parking, and drive in urban traffic with frequent parking

3, L4 / L5 fully automatic driving -- for automatic driving, unmanned taxi and robot logistics in urban traffic environment

snapdragonride platform is based on a series of different snapdragon SOC and accelerators. It adopts scalable and molar high-performance heterogeneous multi-core CPU, energy-efficient AI and computer vision engine, and GPU

among them, adassoc series and accelerator series adopt heterogeneous computing. At the same time, using the new generation of artificial intelligence engine of Qualcomm, ADAS and SOC can efficiently manage a large amount of data of on-board system

thanks to the combination of these different SOC and accelerators, snapdragonride platform can be equipped according to the needs of different segments of autonomous driving market, and provide good heat dissipation efficiency, from 30tops level equipment for L1 / L2 level applications to 130W power consumption equipment for L4 / L5 level driving with more than 700tops

in addition, the new snapdragonride autopilot software stack is a molar and scalable solution integrated into the snapdragonride platform

according to the introction, the software framework of snapdragonride platform can host customer specific software stack components and snapdragonride autopilot software stack components at the same time

snapdragonride platform also supports passive or air-cooled cooling design, so it can further optimize vehicle design and improve reliability while recing cost

now, arm, blackberry QNX, Infineon, Xinsi technology, elektrobit, and Anson semiconctor have joined the auto driving circle of friends of Qualcomm and become the software / hardware suppliers of snapdragonride auto driving platform

the functional security solutions of arm, the automotive designware interface IP, arc processor IP and starmemory SystemTM of Xinsi technology, the OS Security version and hypervisor Security version of BlackBerry QNX, the aurixtm microcontroller of Infineon, and the ADAS series sensors of Anson semiconctor will be integrated into the automatic driving platform of Qualcomm

elektrobit also plans to cooperate with Qualcomm to jointly develop a new generation AUTOSAR architecture that can be proced on a large scale. Ebcorbos software and snapdragonride autopilot platform will be integrated on this architecture

it is understood that snapdragonride will be delivered to automobile manufacturers and first tier suppliers for preliminary development in the first half of 2020, and according to the estimation of qcomm technologies, the vehicles equipped with snapdragonride will be put into proction in 2023

Second, we have been deeply engaged in the automotive business for many years. Before the release of snapdragonride, we have been deeply engaged in the field of intelligent vehicles for many years

for more than a decade, Qualcomm technologies, a subsidiary of Qualcomm, has been providing advanced wireless communication solutions for GM's connected vehicle applications, including the security applications supported by the Android devices on GM

in the fields of on-board information processing, information audio-visual and in car Internet, the total value of orders of qcomm technologies has exceeded 7 billion US dollars (about 48.7 billion yuan)

according to the information released by Qualcomm at the ces2020 press conference, so far, more than one million vehicles have used the automotive solutions provided by Qualcomm

it is obvious that today, the layout of Qualcomm in the automotive field has taken another step forward

ring ces2020, in addition to snapdragonride, Qualcomm also launched a new car to cloud service, which is expected to be available in the second half of 2020

according to the introction, the car to cloud service built by Qualcomm technologies supports the soft upgrade capability of softsku chip specifications, which can not only help automobile customers meet the changing needs of consumers, but also enable chipsets to be upgraded in the field to support new functions according to new performance requirements or new features

at the same time, softsku also supports customers to develop common hardware, so as to save their special investment for different development projects. By using the cloud softsku of Qualcomm, automobile manufacturers can not only provide a variety of customized services for consumers, but also create rich and immersive in car experience through personalized features

in addition, the car to cloud service of Qualcomm also supports the global cellular connection function, which can be used to guide the initialization service and provide wireless communication connection throughout the life cycle of the car

According to nakul ggal, senior vice president of proct management of Qualcomm technologies, combined with snapdragon's 4G and 5g platforms and snapdragon's digital cockpit platform, Qualcomm's car to cloud service can help automobile manufacturers and first tier suppliers meet the new expectations of contemporary car owners, including flexible and continuous technology upgrading and continuous exploration of new functions throughout the whole automobile life cycle

in addition, Qualcomm technologies also announced on ces2020 that it will continue to deepen its cooperation with general motors. As a long-term partner, GM will support digital cockpit, on-board information processing and ADAS (advanced driving assistance system) through continuous cooperation with Qualcomm technologies

conclusion: Giants raging like a storm in the field of automatic driving, HUAWEI has said before it wants to build intelligent core sensors for automobile, such as lidar and millimeter wave radar. After that, Arm led the establishment of the automatic driving Computing Alliance. Now the mobile chip giant Qualcomm has released a new automatic driving platform, and has made further progress in the field of automobile and automatic driving. <

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game player is concive to the faster and better landing of autopilot cars, but on the other hand, as more hardcore players expand their business boundaries, competition in the market will become more intense. p>

this article comes from the author of car home, which does not represent the standpoint of car home

5. Big data is undoubtedly an important concept in the field of science and technology in recent years. As more and more enterprises begin to participate in the big data instry chain, the definition of big data itself is constantly enriched and developed
to define big data, we can define it from the following three aspects:
first, big data redefines the value of data. Big data represents not only technology, but also an instry and a development trend. Big data technology refers to a series of related technologies around data value, including data collection, storage, security, analysis, presentation, etc; Big data instry refers to the instrial ecology based on big data technology. At present, the instrial ecology of big data is not perfect, and there is still a large space for development; Development trend means that big data will become an important innovation field
Second, big data has laid the foundation for an intelligent society. The development of artificial intelligence needs three foundations, namely data, computing power and algorithm, so big data is of great significance to the development of artificial intelligence. At present, in the field of artificial intelligence, the application effect has been improved obviously, one of the important reasons is that there are a lot of data support, which will comprehensively promote the training process and verification process of the algorithm, so as to improve the application effect of the algorithm
thirdly, big data promotes the digitalization of social resources. The development of big data makes data proce greater value. This process will greatly promote the digitalization process of social resources. After more social resources are digitalized, the functional boundary of big data will be constantly expanded, thus driving a series of innovations based on big data
finally, one of the important reasons why big data is important is that big data has opened up a new value field, and big data will graally become an important proction material. It can even be said that big data will be an emerging energy in the intelligent society.

7.

is it technically possible to bring 1.3 billion Chinese people to a wechat group Tencent's official reply: it may be possible, but you won't see anything. According to the public data of wechat data report in 2017, in September 2017, wechat landed 902 million people a day and sent 38 billion messages a day. This means that the average person sends 42 messages a day< more than 1 million per second ! At present, one of the most popular mobile phone CPUs, the Qualcomm snapdragon 845 has 2.8GhZ processing power, with a total of 8 cores. If you don't calculate the CPU operations such as Android system, display refresh and network IO, what is the computing power allocated to each message? The world's first microprocessor was Intel 4004 launched by Intel in 1971. The main frequency of this antique is 108khz, so 21.9khz can't do anything

well, with so many equipment blessings, you can finally join the group happily. But you're surprised to find that there's nothing on the screen but white - because your eyes can't receive such fast data! The visual persistence time of the human eye is 100-400 MS, while our group has to display 1.02 million messages per second, and the retention time of each message is only about 0.0001 Ms. In contrast, movies and TVs all have 41 milliseconds. So before you can see the message, it's gone, leaving a white blob right in the middle of the screen

8. I don't understand this formula very well. It's too complicated... But there's a special explanation.... In addition, I will send you an easy to understand cross-country formula.... Here's the formula you want: I measure every centimeter on the screen as one meter, The acceleration of gravity of a wooden car in a tank baby with a 32 cm horizontal screen (17 inch CRT display) is 4.8. I didn't measure the acceleration of gravity of other cars, but it's very strange. From the physical analysis, the acceleration of gravity of bullets in all cars should be the same, but the actual situation is that each car is different. So I come to a conclusion: S = V2 * sin (2a) / 4.8, where V2 is the square of initial velocity It's not strange to throw. 2a is the angle of your firing multiplied by 2. Then some people will ask, how can v be transformed into a more intuitive force in the tank baby? Because of the time relationship, I only measured the principle of the wooden car, and the other cars are completely consistent. We can think that v = at and a = f / M (Newton's second law), so v = f * t / m, where m is constant and f involves angle, The main reason for the complexity of car type is that the car type has a great influence and the angle has little influence. The error caused by the angle is mostly quantitative error. Therefore, combined with the above, if the fixed angle is unchanged, it means that time controls the distance you play, that is, the length of time you play according to the space, but the measurement standard of T is not in seconds, but in the value of 1 ~ 4 (that is, the number of squares on the power bar) We can set up a linear function y = KX, where y = V, x = t, then K is required. We call k a proportional constant. After my calculation, the K of wooden cart at 70 degrees is 5.726, that is, y = 5.726x, 50 degrees is slightly different from 70 degrees, but the error is not big. The result will be mentioned below. For example, when the enemy is at the position of 1 screen, you use 70 degrees, then s = 32 to substitute the formula V2 = 32 * 4.8/sin (140) and square v2 We get v = 15.46 and then transform it to t, that is, t = 15.6 / 5.726 = 2.699 = 2.7, which is the common saying of 2.7 force. If it is 50 degrees, I find that the calculated force is 0.1 greater than the actual force, and there is no quantitative error. I don't know why if I think it's disgusting to watch the screen distance of 32, I can watch the half throw or other 40 30, but there is a proportional relationship between them Half throw is 1 screen 20, so the actual distance = half throw distance * 1.6 (actually 1.6 is obtained from 32 / 20, If you don't like the half throw, replace 20 with 30 40. The principle is the same. Then the formula of the windless wooden car hitting the position with a certain force is (based on the half throw distance): distance (1 screen, 20) = (k * force) 2 * sin (2A) / (4.8 * 1.6). The difference between other cars is that K and 4.8 are changed to (k * force) 2, where 2 means square. Let's talk about the way to measure the gravity acceleration of a certain car: select two cars and dig a 15cm deep hole with wood (17 inch CRT display is emphasized, and the screen should be adjusted accurately, Then change the car you want to measure, throw the No.1 bullet into the pit with a very light angle of 0 degrees, and press the stopwatch to measure the time from the muzzle to the depth of 15cm at the same time. Measure several times more to make the data more accurate. Then use a formula g = 2 * 15 / T2, T2 is the square of the time you just measured. Here comes g. then sort out all the formulas, After the simplification, the actual force of 70 degrees = SQR (distance * 0.365) SQR is the root sign, which means it is hard to beat. I mean that the actual force of 50 degrees = SQR (distance * 0.221) I have calculated by 0.1, so I don't have to - 0.1 any more. At the same time, I give you the calculation method of the turtle's basic force of 70 degrees and 80 degrees (also a screen of 20 equal parts) the actual force of 70 degrees = SQR (distance * 0.45) 80 degrees The actual force = SQR (distance * 0.841) may have a force error of 0.05, which is only for you to adjust. Here, if you only require the windless basic force point of a certain angle of a certain car, you can directly use the formula force = SQR (distance * coefficient) to calculate the coefficient with the basic force point corresponding to a known screen distance. Generally, as long as the original basic force points are right, you will not be wrong The distance doesn't have to be limited to a screen of 20. You can use whatever you like. Anyway, the coefficient is fixed. The suitable range of this method is variable angle calculation force, fixed angle calculation force to obtain the basic force point. There is no need to memorize the data to estimate the fuzzy force point. When using this method to deal with the fixed angle calculation force of ordinary cars, I found that the formula of force = SQR (distance * coefficient) can also be used The coefficient is only related to the size of the wind (of course, the type of car is also related) interested friends can go to test a set of fixed angle force calculation methods, so that the wooden mark 90 degree force control and other BT algorithms are born, creating conditions, and then off-road, very simple... I believe you can understand ~ ~ cross country play is divided into 80 degrees, 70 degrees and 50 degrees. In a simple understanding, the distance between tanks on a screen is called one screen. As we all know, the strength scale of a tank is divided into four grids, each of which is roughly divided into 10 invisible grids. For example, a grid and a half force is called 1.5 force; One and a half screens are called 1 / 2 screens (1 * 1 / 2 in the table). First of all, let X be the wind force. If it is 0 wind now, then x = 0, so you can ignore the above circle (that is, the wind force diagram). For example, the distance between me and my opponent is half screen, then the grid force is 2.0, that is, half grid force according to 70 degrees, If you use 80 degrees to calculate, you use 2.75 force. If it's 10 winds, then x = 10, blow straight to the left, and I hit from left to right, then it's against the wind. Then look at the circle. Is it 0.5 written on it? Then use 0.5 times x = 5, then half screen distance, use 70 degrees - 5 degrees = 65 degrees, use 2.0 force, why use - 5 degrees? Because the downwind + angle, upwind - angle (remember a mantra, downwind plus downwind minus) circle (wind chart) is 0.5, the wind is 10, so take 0.5 times 10 is equal to 5 degrees, so take 70 degrees - 5 = 65 degrees, downwind minus, so use 2.0 force to hit it ~ and so on, no matter what the wind, you should be able to forget it? In addition, you can see a few special wind points, such as 0.40.350.2. What do you mean by 15 + 10-15 10 -? For example, if the wind force is 9, then it belongs to 10 - (less than 10), then use 0.2 to multiply X. for example, if the wind force is 12, then it belongs to 10-15 (range), then use 0.35 to multiply X. for example, if the wind force is 23, then it belongs to 15 + (greater than 15), then use 0.4 to multiply X. In addition, if the wind force exceeds 20, if it is downwind, use the calculated distance slightly, If it's against the wind, it's a little bit important. There will always be some errors. I hope you can play the game according to your own experience and this table ~ PS: you must have good math scores and strong mental arithmetic ability. It's easy to not keep up with the calculation speed when you just start. The time of sum up is over. You'll get used to it after one day. If you're not good at math, you'd better bring a calculator, And then find people 1v1 practice a 500 plate is at least, otherwise how can become a master? Figure https://gss0..com/7LsWdDW5_ Xn3otqbppnn2djv / cyw2mq / PIC / item / e40cf6396eb686f0c33fa80.jpg http://hi..com/cyw2mq Look) when you turn your head at the moment when you put the space (the time difference should not be more than 0.1 second), the shell can be shot from the back, so that the shell can avoid the soil in front. It should be noted that the head swing below 50 degrees often hits you, Centipede and spider are butt gun, throwing gun to the opposite direction control. Remember: the space and direction key can not be pressed on the keyboard at the same time, as long as the direction key quickly click, don't press down and don't lift up. Wish you a happy game ~

please adopt, thank you!