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Dia mining

Publish: 2021-03-29 13:16:28
1.

Wrong version

download the Win32 bit http://ck.kolivas.org/apps/cgminer/

version 2.6.1 is recommended for win64 (versions before 2.6.1 are not compatible with 64 bit system)

version 2.4.3 or 2.6.1 is recommended for Win32

2.

Main differences between CPU and GPU:

1. CPU is the central processing unit of computer

GPU is the graphics processor of computer

CPU is a very large-scale integrated circuit, which includes Alu arithmetic logic unit, cache memory and bus

CPU is the core of a computer's control and operation, its main function is to interpret the instructions issued by the computer and process the big data in the computer software

GPU is the abbreviation of image processor. It is a kind of microprocessor which is specially used for PC or embedded device to perform image operation

The work of GPU is similar to that of CPU mentioned above, but not entirely. It is designed to perform complex mathematical and geometric calculations. This game has high requirements in this respect, so many game players also have deep feelings for GPU

so CPU and GPU are two completely different things, they just sound the same

extended data:

CPU and GPU are different in design because they are used to deal with different tasks at first, and some tasks are similar to the problems that GPU is used to solve at first, so we use GPU to calculate. The operation speed of GPU depends on how many pupils are employed, and the operation speed of CPU depends on how powerful professors are employed, The professor's ability to deal with complex tasks is very good, but for less complex tasks, it still can't hold many people

of course, today's GPU can also do some slightly complicated work, which is equivalent to upgrading to the level of junior high school students and senior high school students, but it still needs CPU to feed data to the mouth before it can start to work, which is still managed by CPU

3. < UL >
  • a card originated from ATI. In the past, the image quality of a card was slightly better than that of N card, but after so many years of evolution, there is little difference. Since amd acquired ATI, bvdia has no longer provided AMD with motherboard chips, but specialized in graphics cards. It has strengthened cooperation with game developers, and many games have been optimized for n-cards, thus improving its competitiveness

    The power consumption of N card is lower than that of a card of the same level. Therefore, for most game players, generally should choose n card. However, n-card of Maxwell architecture relies heavily on CPU single thread performance, which is the strength of AMD CPU (except ryzen) for so many years. Therefore, before this year, amd platform should be equipped with a-card. In addition, because a card has more computing units than the same level n card, it is suitable for mining and other special applications. Therefore, when buying a second-hand high-end a card, we should pay special attention to avoid buying a mine card

    In addition, the performance of Rx 470d is much better than that of GTX 1050ti at the same price

  • 4. My primary school life is like a huge saucer, with sour, sweet, bitter and spicy. These four kinds of taste for my primary school life painted a brilliant color. Every time I tasted a taste, I unconsciously took a step towards "growth"

    life in primary school is naturally sour. Once, I finished the examination paper in a hurry, and even gave it to the teacher confidently without looking at it. A few days later, the paper came back. I took a careful look at the score. Ah? It's only seventy-seven! My heart can not help but sour, very bad taste. Just regret a way: at the beginning why not check to hand in again? There are several questions that should not be wrong. Alas! I went home dejected, and my mother criticized me fiercely. This kind of feeling, ah! Sour

    in the fourth and fifth grade, we will begin to write compositions, and we will learn more than words. We should increase our reading, but also know how to use some rhetorical devices. Every exam is like "taking risks" in turn, for fear that some "ghosts" will "attack" us, and our learning will become exciting and hot

    I have classes with my classmates and teachers every day, playing games and studying. I have learned a lot of knowledge and made progress bit by bit. Primary school life is as sweet as honey. Whenever everyone gets a good result or a prize, the whole class will clap and cheer together, and give a happy encouragement; If to what festival, the students will celebrate together, hold a big activity or something, let alone the taste

    but it's said that if there is sweetness, there will be bitterness. It's really good! After a hard day at school, when I get home, I have to do my homework again. When I finish my homework, I have to hurry up to review and preview. In the evening, I have to study at night. On weekends, they have to use their "separation skills" to study that tutorial class, this training class. Oh, look, I'm tired

    life in primary school is almost over, and it is about to come to a complete end. Good bye to a new life.
    5. Appendix 1
    shaft and roadway support
    shaft support
    in foreign countries, brick, stone and cast iron shaft lining are rarely used. In the past, wood support was almost used, but now the use of concrete and metal shaft lining is increasing. The selection of shaft lining depends on the conditions of surrounding rock and water, the form of shaft and the cost of materials
    (1) wooden supports - until recently, most square shafts were still supported by framed wooden supports and divided into compartments The size and spacing of the timber used depend on the rock strata encountered The disadvantages of wood support are high cost, low strength, short life and easy to cause fire. In the expansive rock, the damage of wood support is slow and the warning time is long. In most cases, a concrete lock is poured at the beginning of shaft sinking to fix the support and provide a good foundation for the shaft timber support. The wooden frame is generally hung on the upper frame with hooks. After the frame is in place, the prop is inserted, the hooks are tightened, and the back plate is laid around the shaft
    (2) metal support sometimes metal support is used instead of wood support. It is usually used with wood back board. The wood back plate can be inserted into the flange of the metal bracket quickly and efficiently. If the metal bracket is designed properly, its installation speed and accuracy are higher than that of the wood bracket, because the metal bracket may be bolted and arranged neatly
    (3) concrete shaft lining - nowadays, the original concrete shaft lining is widely used. In South Africa, for example, almost 100% of shafts are circular concrete walls. And almost all shafts without exception reach the highest sinking speed. In addition to the fast sinking speed, there are many other advantages. The circular concrete shaft lining has the highest strength coefficient, the best air flow characteristics and the least maintenance compared with any shaft lining form. The concrete shaft wall is easy to be removed and refitted into another lifting arrangement, or changed into an air shaft without affecting the state of surrounding rock. It is much easier to control or block water inflow in this kind of well. Compared with most other types, this kind of shaft has fewer accidents and is much easier to repair in case of accidents. In some special cases, square or oval concrete is also used for shaft lining. Although the cost of square shaft is similar to that of round or oval shaft, its strength is not as good as that of round or oval shaft. Elliptical shaft has good strength coefficient, which is used when air flow is separated. But the cost of digging a well is higher than that of a round one
    (4) shotcrete or shotcrete Shaft Lining - some shaft walls use shotcrete or shotcrete shaft lining. The tank way of this kind of shaft is generally fixed with anchor rod. If there is no need for the channel after the completion of the shaft, the steel rope channel can be used in the shaft sinking
    roadway support
    in the past, frame or multi section wood support was the only familiar method to support underground roadway. With the decrease of pit timber and the appearance of wide flange type, steel, as a kind of structural support material, quickly replaced pit timber. Recently, bolting and shotcreting support has also been listed as a practical support method in mines. Whether bolt or shotcrete (including shotcrete and shotcrete), the cost of one foot roadway support is generally lower than that of metal support. Sometimes both are used at the same time, and the cost is less than that of metal support
    (1) metal support metal support is usually composed of two sections, each section includes a shed leg and a half arch. In the same way, after the two sections are opposite, they are butted with bolts at the vault. The size of metal support depends on the nature of rock and ground pressure. Generally speaking, 4-inch or 5-inch metal supports are used in small section roadways with spacing of 1.5-4 feet; 5-6 inch metal supports are used in the roadway of discontinuity, with the spacing of 1.5-4 feet; The large section roadway adopts 6-8 inch metal support with spacing of 2-5 feet. For all the projects using bolting and shotcreting support, metal support is only needed in fault and seriously broken or soft rock zone. According to the need, the metal shed must also be paved with wooden blocks and wooden back plates. It takes 20-40 minutes for a standard excavation team to set up a metal shed
    (2) bolt support there are many kinds of common bolts that can be tensioned. The main difference is that before tightening the nut to make the bolt tensioned, the expansion ring structure of the anchor head fixed in the hole is different. The most suitable form of anchor head for a certain rock should be determined by frequent tests. Mild steel metal anchors shall be at least 1 inch in diameter and 10 feet in length (the roadway section shall be sufficient to permit the use of such long anchors). The law of rock joint should be studied carefully when installing anchor. The arrangement of the bolts should be uniform and regular, so that the bolts can form a similar arch structure with the surrounding rock after tensioning, so as to bear the external pressure acting on the roadway. Above the arch line, the average spacing of roof bolts in the whole roadway varies from a minimum of about 12 square feet per bolt to a maximum of 25 or more square feet per bolt. When bolts are installed by ordinary excavation teams, a standard excavation team can usually install bolts in 30 to 40 minutes, and only two bolts can be installed in an hour< (3) shotcreting shotcreting or shotcreting, which directly sprays concrete or mortar to the rock surface of arch roadway roof, is rapidly recognized as an efficient and economical roadway support method. As long as the sprayed concrete can adhere for a certain period of time to reach the initial setting strength without collapse, this method can be used on all kinds of soft, hard rock or hard soil. There are many accelerators that can reach the initial setting. The shotcrete thickness is 2 to 6 feet. The effect of dry spraying is usually better than that of wet spraying, because it can be sprayed thicker, larger size aggregate (up to 0.75 inch) can be used, and the hourly proctivity of each nozzle is higher (up to 5 cubic yards per hour). One of the economic advantages of shotcrete is that it can spray concrete to the roadway roof while loading rock, so as to shorten the time needed to complete the whole "cycle"
    wooden support
    it may be necessary to support the roof and two sides of the roadway ring excavation. The traditional method is to set up temporary wooden support first, and then replace it with permanent support or lining. Permanent supports can also be used as pitlogs
    when the pit wood is used as permanent support, it should be well dried and treated with anti-corrosion agent. The wood support can be easily processed on the spot without special tools or equipment, and can be erected quickly. When driving through local bad strata, the wood is used as temporary support, which is easy to cut and process, and can meet various needs
    the wooden shed is a support which is composed of several pit logs and cross-section of the roadway. The shed composed of three components is the most commonly used in small section roadway, which is composed of a roof beam (beam or shed beam) on two shed legs. The slope of the shed leg is 1-1.5 inches per foot, which can prevent the bottom of the shed leg from pushing inward unless the side pressure is too high and the floor is soft. The shed legs are usually hardwood, round, and the minimum diameter of the small head is 5 inches. The minimum thickness of the top beam is generally 5 inches and the width is 6-8 inches. The back plate is generally 2 inches thick, and the two sides and the top plate can be paved or not
    in the expansive rock stratum, there are generally "slant slope bottom supports" at the bottom of the two shed legs to prevent the shed legs from moving. Where the bottom plate is easy to uplift, reverse arch supports can be used. If the hanging roof (or roof) of roadway is arched, it is often more stable, especially in wide roadway. Only the roof needs to be supported, and the shed legs can be omitted where the two sides are hard, and the arch beam is fixed in the beam nest at the arch line. The size of timbers and the space between trellies depend on the cross-section of the roadway and the pressure it needs to bear. In the swelling rock, the back plate should not be laid too closely, and a certain distance should be left between the adjacent back plates to release the low pressure
    the routine process and speed of installing wood support mainly depend on how close the support should be behind the working face. If immediate support is required for each cycle, the erection of supports becomes part of the driving cycle. The first process after blasting is to pry off the pumice on the roof; In the soft stratum, the front probing beam, sliding beam or similar device is used to support the roof in front of the last shed, so as to protect workers ring rock loading. After a cycle of gangue is loaded, a new shed will be erected. If necessary, wedges will be used to fix and install the back plate, and the rock drill will be installed for the new cycle. This process will obviously slow down the driving speed, but unless the rock condition is too poor, the forward sheet pile method or other methods can be used. Generally, the pit timber can be standardized and the conventional operation can be adopted. Before the operation, all materials and equipment will be transported to the working face to speed up the operation; Workers shall bring the whole shed, angle wedge, wooden wedge, back plate and tools into the working face. The support work lags behind the place where the working face is too far away, so a professional support team is generally needed. The support work can be carried out by using the appropriate worktable without affecting the tunneling work. If the mobile worktable is used, the worktable is several sheds long, and its height can let the tramcar pass through from the bottom, it will be beneficial to the tunneling work< In the USA, brick, stone and cast iron shaft linings are rare; formerly, timbering was almost universal but concreting and steel framing are increasing in use. Choice of support depends on ground and water conditions, shape of shaft and cost of materials.
    (1)Timber Sets——Until relatively recently, most rectangular shafts have used square-set timbering for ground support and compartment division .Size of the timber used and set spacing is dependent on ground conditions encountered .The disadvantages of timer sets are the cost, strength , short life and fire hazard involved. In swelling ground timbering fails slowly and with ample warning .in most cases , a concrete collar is poured at the start of a shaft to tie the sets in and provide a good bearing for the shaft-timbering installation .Timber sets usually are hung from the preceding set with steel hanging rods .After the set is in place , the posts are inserted and the hanging rods are tightened up . The lagging is placed in around the sides of the shaft.
    (2)Steel Sets-Steel sets sometimes ate used instead of timber. Wood lagging generally is employed in conjunetion. The laggling can be placed in the web of the steel sket very quickly and effectivelt. Properly designed steel sets go in faster and more accuratelt than wooden sets, as they can be bolted together and lined up perfectly when assembled.
    (3)Concrete Lining-Circular concrete-lined shafts are more and more used today. For example, in South Africa, almost 100% of the shafts installed are circular concretelined .Also almost without exception, the best sinking time is achieved. Besides the good sinking rate, there are numerous other advantages. The circular concrete section provides the greatest strength factor for ground support ,the best air-flow characteristics, and by far the lowest maintenance of any shaft type. It can be stripped easily and changed to another hoisting configuration, or to a ventilation shaft, without disturbing ground conditions. Water can be controlled or sealed off much easier in this type of shaft. There are fewer wrecks in this shaft than in most other types, and rehabilitation can be accomplished much easier if they do occnr. In some s
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