The mining here is a blockchains category A blockchain is a shared transaction record database of a system of all participating nodes based on the Bitcoin protocol, which is a publicly available book. Mining is the process of adding transaction records to the public account book. Mining is done by the mining machine. A block contains information such as block headers and transaction data. Among them, the ruler of the blockchain stipulates that the SHA-256 hash value of the block header must start with multiple 0s, which makes the calculation of the hash value difficult, and most of the time requires multiple attempts (each attempt is based on the nonce value) to determine how many zeros the hash value begins, you can get a hash value that is recognized by all nodes in the chain. At this time, you can write transaction data to form a block. Obviously, the more nodes, the more difficult it is to calculate the hash value. The process of calculating this hash value is the mining process. According to the mining ecosystem, mining can be divided into CPU mining, GPU mining, FPGA mining, ASIC mining and so on. CPU Mining

The early mining operation method is to use the CPU to calculate the hash value. As the number of blocks increases, the difficulty level of calculating the hash value increases to a certain extent. The electricity cost of the operation exceeds the return obtained by calculating the hash value, and the CPU mining method has no practical value. GPU Mining It is to use the GPU to calculate the hash value. GPU mining has the advantage of faster computing speed than CPU mining because: The CPU has the computing burden of the system and all programs running on the system; The CPU can execute 4 32-bit (128-bit SSE instructions) operations per clock cycle, while GPUs such as the Radeon HD 5970 can perform 3200 32-bit (3200 ALU instructions) operations. The GPU operation speed is more than 800 times the CPU speed. . Although the CPU can increase its core count to 6, 8, 12, etc., the GPU is still much faster than the CPU. GPU mining is to calculate the hash value of the new block, write the transaction data, generate the block to connect to the blockchain, and obtain virtual currency returns, such as bitcoin, Ethereum, and so on. GPU rendering is the use of GPU computing units for graphics processing, such as calculating the light and material of a pixel in the projection surface of the camera, and finally coloring the pixel, obtaining image information, and writing to a file or displaying it on a display device. A GPU render farm is a network of computing nodes with many GPU devices installed, usually dedicated to GPU rendering to obtain image files. Such as the foxrenderfarm. Of course, GPU render farm can be retrofitted for GPU mining.
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