Why bitcoin destroys graphics card

1. 1. CPU is mainly optimized for serial instructions, while GPU is optimized for massively parallel operations
2. Modern multi-core CPU aims at instruction set parallelism (ILP) and task parallelism (TLP), while GPU is data parallelism (DLP)
3. GPU often has a larger bandwidth of memory, that is, the so-called video memory, so it will also have good performance in high throughput applications
4. CPU is a general-purpose operation. In short, it means brainless calculation and violent calculation. Whether it's 100 children sharing apples or simulating the earth, it can be decomposed into the most basic calculation of 1 + 1 = 2. GPU is specially designed to deal with high-order mathematical algorithms, such as calculating the relative positions of light source, object, viewpoint and shadow, which requires trigonometric functions to be piled up. The bitcoin digger uses SHA-256, a secure hash function invented by the US National Security Agency, which is generally used for password encryption and decryption. This algorithm can perform a large number of 32-bit integer right-rotate operations, which is very suitable for GPU which is good at large-scale concurrent computing and password cracking.

2. Bitcoin was acquired by CPU in the early days, e to different working methods. CPU is mainly to do full-function operation, the number of core is small, and the operation ability is limited (GPU is a very large number of operation core for special operation). With the advantages of GPU general computing and the continuous development of GPU speed, miners graally began to use GPU instead of CPU for mining. Bitcoin mining uses SHA-256 hash operation, which will carry out a large number of 32-bit integer cyclic right shift operation. Interestingly, this algorithm operation can be implemented by a single hardware instruction in AMD GPU, while it needs three hardware instructions to simulate in NVIDIA GPU. This one alone brings an additional 1.7 times of computing efficiency advantage for AMD GPU. With this advantage, amd GPU is favored by the majority of miners. At present, it has left GPU computing. At present, miners have begun to widely use integrated circuit (ASIC) mining machine. Although this kind of mining machine can only be used to dig bitcoin, other currencies can not be used yet, but a single mining machine can reach the level of megabytes, especially loved by mine owners in Sichuan, Guizhou and other regions. Tens of thousands of professional mining machines are in full swing, and retail investors are unlikely to get bitcoin in the face of such powerful computing power.

3. Pro, are you going to get rich or interested in mining? If I'm interested, I won't say anything. If I want to get rich, I'll advise you. Forget it. It's not worth it. Now mining is a loss business

4.

As of October 1, 2020, the state has not issued five element currency, which is illegal

the five elements coin is a virtual circular steel sheet of a pyramid selling group, which is only one circle larger than the ordinary one yuan coin. Its claimed price is 5000 yuan, which is called pure gold

one side is printed with the words of "gold", "wood", "water", "fire" and "Earth", and the other side is printed with a personal portrait and the words of "Zhang Jian's five element coin". According to the MLM personnel, the "five element coin" is a limited edition, with a total of 500 million issued by MLM criminal groups

"five element coin" is operated by a website called "Cloud Data Trade Alliance" without registered address, and its founder is Zhang Jian. In September 2013, the State Administration for Instry and Commerce and the Ministry of Public Security announced ten typical cases of pyramid selling, including the case of Cloud Data Trade Alliance

extended information:

according to Liao Jinsong, leader of Economic Investigation Branch of Chenzhou Public Security Bureau, "five element coin" pyramid scheme was launched by song miqiu at the end of 2016, and members were developed according to the mode of "Y, s and M". Among them, the membership fee for y-class members is 500 yuan, that for S-class members is 2500 yuan, and that for M-class members is 5000 yuan. M-class members are mainly promoted, and members are developed in a al track way to "pull the head" to join

according to the MLM promotion of "five element coin", there are two main benefits of member development offline. One is cash income. For every member who develops, he can get a direct promotion award of 10% of the membership fee; A team with 200 members will win a "BMW Award" of 150000 yuan. In addition, there are virtual currency value-added benefits brought by static value-added, collision award and so on

Liao Jinsong pointed out that in order to avoid legal liability, the pyramid scheme of "five element coin" in the actual promotion process is under the guise of "selling five element gold coins", trying to create the illusion of "selling" gold coins, but its characteristics of "pulling the head", forming the hierarchy in order, and rebate through the hidden layer of "BMW Award" determine the essence of pyramid scheme

5. Compared with CPU, GPU computing will have an absolute advantage in bitcoin mining
1. CPU is mainly optimized for serial instructions, while GPU is optimized for massively parallel operations
2. Modern multi-core CPU aims at instruction set parallelism (ILP) and task parallelism (TLP), while GPU is data parallelism (DLP)
3. GPU often has a larger bandwidth of memory, that is, the so-called video memory, so it will also have good performance in high throughput applications
the CPU needs strong generality to deal with various data types, and at the same time, it also needs logical judgment, and it will introce a lot of branch jump and interrupt processing. All these make the internal structure of CPU extremely complex. GPU is faced with highly unified, interdependent large-scale data and pure computing environment without interruption. GPU uses a large number of computing units and ultra long pipeline, but it only has very simple control logic and saves cache. The CPU not only occupies a lot of space by cache, but also has complex control logic and many optimization circuits. So unlike CPU, GPU is good at large-scale concurrent computing, which is suitable for password cracking
in short, CPU is a general-purpose operation. In short, it means brainless calculation and violent calculation. Whether it's 100 children sharing apples or simulating the earth, it can be decomposed into the most basic calculation of 1 + 1 = 2. GPU is specially designed to deal with high-order mathematical algorithms, such as calculating the relative positions of light source, object, viewpoint and shadow, which requires trigonometric functions to be piled up. The bitcoin digger uses SHA-256, a secure hash function invented by the US National Security Agency, which is generally used for password encryption and decryption. This algorithm can perform a large number of 32-bit integer right-rotate operations, which is very suitable for GPU which is good at large-scale concurrent computing and password cracking.

6. Guiminer software needs graphics card to support OpenCL. You can use gpu-z detection software to check whether your graphics card supports OpenCL. If it supports OpenCL, you will check the small box in front of OpenCL at the bottom of the detection page. If it doesn't, it won't be supported. There is also a newer version of the graphics driver. I don't know if that's the reason. I hope I can help you.

7. You don't have to explain a lot. Very simple:
mining operation requires computers to provide very terrible and abnormal parallel operation performance, even 32 core CPU is far from enough. The powerful processing power provided by multiple high-performance graphics cards is very suitable for such operation tasks.

8. It's normal that businesses are not charities, and no one does business at a loss
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