Chapter 64: Gödel 2.0

At the time of chip design, Sun Wei and they once proposed a new interface scheme, if according to the new interface design, in terms of electrical characteristics, there will be about 5% performance improvement, but Wang Yinan weighed the pros and cons, and decided to use the interface scheme compatible with the previous FPGA.

Now this compatibility shows a huge advantage, Sun Wei first replaced the previous two FPGA chips with new custom chips, started the Gödel system, and after a simple test, confirmed that it was working properly. The entire hardware team worked together to replace all the FPGA chips with new custom chips.

If a newly designed interface is adopted, it will take a lot of effort to debug the new interface card and the requirements of the new cabinet.

After the boot check, Li Fei ran a simple functional test program, each chip ran a separate 95% coverage script, at this time the huge advantage of parallel operation began to appear, 64 chips run at the same time, three seconds later, the result was obtained, there is really a chip did not pass the 95% coverage test, don't you say, in that huge cabinet, it is really not easy to find this problematic chip in the dense board.

Wang Yinan asked Li Fei to stop the other test scripts, and ran the script covering the test in an infinite loop on the chip in question, two minutes later, in the huge cabinet, there was only one cooling fan left that was still spinning wildly, "That's it", without waiting for Wang Yinan to speak, Li Fei stopped the test script, shut down, Sun Wei hurriedly ran over, and replaced the chip with a spare chip.

This time there were no problems, the coverage tests and simple functional tests were done quickly, and it was time for the reborn Gödel to show off his might. In Sun Wei's wry smile, Wang Yinan took out Sun Wei's H265 paper, unconsciously, the defect analysis of this paper has become the standard performance test program of the Gödel system, before using the new custom chip, the FPGA version of the Gödel system analysis of this case took 25 minutes and 34 seconds.

Start the defect analysis program, Wang Yinan started the timer, maybe it was an illusion, Wang Yinan felt that the LED light flashed a lot faster, ten seconds, twenty seconds, no, it was not yet twenty seconds, seventeen seconds just passed, "beep beep", seeing Wang Yinan press the start button, Li Wenjing got up and was about to pour a glass of water to drink, but before the first step was taken, a piercing buzzer sounded. Lines of characters appeared on the screen.

"It's so fast, isn't it No Falut again", Wang Yinan was startled, "It's not like ah, there's a lot of output, let me see",

"Removing the screening link, reducing contention locks, and introducing a pre-processing unit", "Well, the result is no problem".

A group of people looked at each other, "That's it?" ”

It's like a person who is used to using a little genius, and suddenly gets a Core, and no one speaks for a long time, "Forget it?" Li Wenjing asked weakly, "It seems to be yes",

"How much time?" "About seventeen seconds."

Finally, there was a burst of cheers in the room, and everyone who came back to their senses began to celebrate, a full two orders of magnitude of performance improvement, it took nearly 80 hours to analyze the 116 flight control system before, if it is the current Gödel system, it only takes more than forty minutes, and 60 million soft girl coins will be in hand, which is also too scary.

"Hurry up, the formalization of the new lattice model has long been completed, every time I used the Gödel system to analyze it before, due to the large amount of calculation, it was always locked at the beginning, and I couldn't even estimate the progress, so I tried it with Gödel 2.0", Li Wenjing couldn't wait.

Generally speaking, low-temperature superconductivity belongs to a field of solid-state physics (sometimes I will mix high-temperature superconductivity and low-temperature superconductivity, in fact, they are all talking about the same thing, saying low-temperature superconductivity, because the maximum temperature of superconducting materials is at least in the liquid nitrogen temperature zone, that is, about minus 200 degrees, which is a very low temperature relative to normal temperature, so why say high-temperature superconductivity, because the goal pursued by scientists is a higher temperature superconductor, compared to the traditional superconductor of about minus 270 degrees, such as mercury, Higher temperature superconductivity, also known as high-temperature superconductivity, is the goal pursued by physicists).

Solid state physics is relative to fluids, plasma, as long as the material does not undergo deformation can be regarded as the research content of solid state physics, and solid can be divided into two categories of crystal and amorphous (of course, you can also add quasicrystals between the two), in short, crystal is the periodic arrangement of atoms inside the solid and the spatial orientation compatible with the arrangement is orderly.

At this time, you have to admire the mathematician's bull X, when physicists have not yet formed the concept of crystals, mathematicians represented by the French mathematician Galois (Galois) have prepared mathematical tools for describing the periodicity of crystals - group theory, in short, group theory is the study of a bunch of individual permutations and combinations of mathematics, atoms are a yarn, for mathematicians, just a point, an abstract unit.

Mathematicians don't know what crystals are, but Federov said, well, the whole space, all the possible periodic structures, there can only be 230 kinds, 1 is what, 2 is what, 3 is ... So, there are only 230 kinds of crystal structures that are not the same, isn't it magical?

The content of junior high school physics tells us that in a crystal, of course, it is best to be a conductor, the two ends of the voltage are applied, and the free electrons will flow from one end to the other end, which is the current, because there are atoms in the crystal, there are nuclei in it, there are bound electrons, etc., so the free electrons will collide when they flow, and the collision will lose the energy of the electrons and produce heat, and the current will also be lost, which is the resistance.

Of course, the actual situation is much more complicated than this, and we won't go into detail here, after all, this is science fiction, not a college physics textbook. To put it simply, the electrons in the crystal are affected by the crystal lattice, and the energy is neither like the discrete energy levels in simple atoms, nor like the continuous energy range of free electrons, but in the lattice limit, they are band-like, referred to as energy bands.

The highest energy band of electrons in a crystal is generally called the Fermi surface, when a pair of electrons near the Fermi surface exchange some kind of particle (of course, this is a figurative statement, the ghost knows how the two electrons look at each other and hook up), for the layman, that is, in some cases, the electrons with the highest energy in the crystal, that is, the most active electrons, for some reason, probably watched the movie with the back of the mountain?

Anyway, they were paired up and hooked up, and physicists called these good friends Cooper pairs. For them, there is no secret inside the crystal, it is a smooth road, when the temperature drops to a certain extent, the obstacle caused by the thermal movement of the crystal drops to a critical point, although the nucleus, the crystal lattice composed of atoms still hinders and scatters electrons.

However, these obstructions and scattering, before these good friends are dismantled, will not cause energy loss, that is, there is no resistance, which is superconductivity.

Li Wenjing's father's previous work was to discover that in the crystal lattice formed by certain oxide crystals, when the temperature drops to a certain extent, Cooper pairs may be generated, using his theory, Cheng Qian and Smith, as well as Wang Yinan, they have synthesized copper oxide superconductors, of course, this is now known to physicists all over the world.

Wang Yinan and Li Wenjing added a second or even a third metal to the oxide, such as yttrium or barium, on the basis of Li Shiyao's work, but this brought great complexity to the calculation, and the Gödel system previously combined the second metal with 230 spatial configurations, and faced the problem of insufficient computing power when simulating, in some parts of the crystal lattice, there was an infinity like a singularity, and every time the Gödel system came here, it would fall into an endless loop.

Wang Yinan and they tried to use a dragon slayer knife in physics to solve this problem, to put it simply, there are some things in the world that have nothing to do with scale, for example, everyone will often see clouds on airplanes, right, the shape of clouds is typical and has nothing to do with scale, because judging purely from the shape, a meter-high cloud is exactly the same as a thousand-meter-high cloud.

So by constantly changing the parameters and scales, physicists can eliminate infinity, or more accurately, derive valuable information from infinity. For clouds, some of their topological properties are invariant, regardless of the scale, in other words, the fixed point is the core of the renormalization group.

As mentioned earlier, in the Gödel system 1.0 period, Wang Yinan can eliminate infinity of several orders of magnitude.

So, what kind of performance does Gödel's System 2.0 have?

In the formal model, Wang Yinan uses two metals, copper and barium, 230 kinds of lattice spatial configurations, and the ratio of copper and yttrium also has different variations, in a local range, one copper atom with two yttrium atoms, or two copper atoms with three yttrium atoms or other combinations, considering whether a stable lattice can be formed, as well as considering other physical and electrical properties, the Gödel system can be simulated for this.

If one can penetrate Gödel's consciousness, assuming that it is conscious, one will see that in Gödel's consciousness space, countless copper, yttrium, and oxygen atoms are constantly combining and dismantling according to different proportions and shapes, and countless electrons (of course, in fact, the probability wave function of electrons) are diffused in the middle of these structures.

Then, each configuration will be cooled to absolute zero in the virtual consciousness space, at a certain temperature, a certain configuration of the lattice species, the diffuse electrons are suddenly educated by the good friend, enlightened, two by two pairs, once this kind of good friend appears, Gödel will adjust his neural network, reverse training, more inclined to form this configuration of the base friend's electron.

Time gradually passed in the training of the Gödel system, and after a full thirty minutes, the Gödel system gave its own estimated training completion time, which is 120 hours.

Wang Yinan gasped, no wonder Gödel 1.0 would fall into a dead loop before, just to estimate the time, the previous system would take 50 hours, it's no wonder if you don't drive yourself crazy.

"Okay, okay, let's go back and rest first", Wang Yinan clapped his hands, "There are things at home that can be arranged freely in the past two days",

"I also want to have a good rest and rest", since the start of the special training, Wang Yinan has turned to the present like a spinning top, and there is no time to catch his breath, of course, filming movies and making actresses is not a break in Wang Yinan's eyes, "Filming scenes, soaking horses is very tired."

"I don't know what kind of surprise the Gödel system will give us after 120 hours", when he returned home, Wang Yinan fell asleep in anticipation.