From all-round academic master to chief scientist

As Lin Xiao said, the Fermi liquid is already called a "liquid", so why not study it directly as a real liquid?

This kind of thinking from another perspective is exactly what is necessary in scientific research.

Of course, it’s not that easy to really change the perspective.

The first equation written by Lin Xiao is actually a form of Navier-Stokes equation.

The Navier-Stokes equation can describe various fluids. In various computer modeling software, if you want to perfectly simulate fluids, such as water flow in movies, etc., you also need the Navier-Stokes equation. help.

But obviously, Navier-Stokes equations cannot be used to describe "liquids" like Fermi liquids.

Fermi liquid is just a description of a large number of fermions, such as electrons.

"So a huge deformation is required for the Navier-Stokes equations...but the basic form is still useful."

Lin Xiao touched his chin. After a period of thinking, he began to take action on this great equation that was regarded as a basic law by the fluid mechanics community.

"First of all, we must consider the characteristics of fermions, particles with half-integer spins."

"Well...you also need to take into account Pauli incompatibility."

"besides……"

In this way, Lin Xiao continued to try to construct the "Navier-Stokes equation" that can describe the Fermi liquid. However, because it involves quantum mechanics and enters the microscopic field, there are more things to consider, and obviously not It is easy to follow the equations of classical mechanics like the NS equation.

But as long as it can be constructed, Lin Xiao believes that it will become the NS equation of quantum mechanics.

So, this is important.

Of course, this cannot be accomplished overnight.

So time passed quietly, 2022 passed, and time came to 2023.

…

January 8th.

In Lin Xiao's room, he suddenly raised his head and looked at a very complex partial differential equation on the draft paper in his hand, and the expression on his face relaxed slightly.

"Well, it's basically completed... However, it's hard to tell the specific situation. It still needs to be simulated."

Moreover, it is a simulation that requires a huge amount of calculation.

"It seems that we need to use super calculation."

When using a supercomputer, it is naturally best to use the Sunway TaihuLight. The processor chips inside are all China's own, and the security and confidentiality are very good.

However, looking at the days, there are less than two weeks until the Spring Festival. If he wants to apply for Sunway Taihu Light, he will have to queue up again. He will definitely have to go home by then.

Although he can jump in line, it usually involves more important projects. Although the thing he is studying now is of extraordinary value, if it is really important, it will definitely not be important in the eyes of others.

"Forget it, let's ask first. If it doesn't work out, we can wait until the next year."

With this thought in mind, he logged into the official website of Sunway TaihuLight, the National Supercomputing Center, and started applying.

The application requires filling in relevant information, such as subject name, scope of application, etc. Lin Xiao quickly completed the filling and determined the application project.

Next, you need to wait for feedback from the other side, which may take a few days.

But Lin Xiao naturally didn't need to go to that trouble. He just took out his phone and asked someone.

After a few phone calls, he got feedback quickly.

"You actually have to wait two weeks? Isn't it the Chinese New Year at that time?" Lin Xiao was very surprised.

The person on the other end of the phone was a professor from the School of Computer Science at Beijing University. In response to Lin Xiao's question, he replied: "It seems that they are all the people who research materials, especially this year, especially after March, when there was a queue. Going after three months, hey, it’s simply outrageous.”

"And I heard that their materials science and condensed matter physics departments have come up with some important theory, which is very helpful for their research. What is it called electronic topology? Professor Lin, I heard that you also study it. You should know physics and materials, right?”

Lin Xiao was stunned: "Ah this..."

Electron topology theory?

I'm afraid it should be the electronic topological bonding theory, right?

Good guy, I didn’t expect that he was the one who tricked me.

"Ahem, well, that may not necessarily be the case. Anyway, thank you Professor Zhang. I understand."

"Yeah, okay." Professor Zhang from the School of Engineering across the street said, "Oh, by the way, Wang Wenguang, director of the Xishi Supercomputing Center, said he wants to call you later. He told me after I contacted him just now."

Lin Xiao became confused: "Director of the Supercomputing Center?"

"Yes, I don't know what exactly I want to ask you for."

"Okay, thank you then."

"OK."

After hanging up the phone, Lin Xiao touched his chin and started thinking.

What happened that made the director of the supercomputing center come to him personally?

He has not done any research on computers yet.

After thinking about it for a while, his cell phone rang.

It was a call from Xishi. It seemed to be the director of the Supercomputing Center in Xishi.

After connecting the phone, a voice came from the other side: "Is it Professor Lin? I'm Wang Wenguang, director of the Xishi Supercomputing Center."

"I'm Lin Xiao." Lin Xiao said with a smile, "Director Wang, thank you."

"Professor Lin, hello, hello." Wang Wenguang immediately responded with a smile, and then continued: "Professor Lin, I heard that you just applied for Taihu Light. Are you anxious?"

"It's not urgent, but Professor Zhang just told me to wait two weeks. The Spring Festival will be in two weeks. I don't have time at that time, so I can only wait until after the new year."

"Haha, let's do this, Professor Lin. I will help you make arrangements and let you get on the computer in two days. Don't worry, TaihuLight usually has spare nodes and will not fully arrange all the nodes. You What do you think?" Wang Wenguang said with a smile: "And even if Professor Lin's topic is not urgent, it is definitely more important than other topics, and maybe it is of great significance to our country."

Lin Xiao was stunned and said: "If possible, of course it is the best, but is there something wrong with Director Wang?"

Wang Wenguang smiled heartily: "As expected, I can't hide it from Professor Lin. In fact, it's not a big deal. You also know that those of us who are engaged in supercomputing are just like those who are engaged in computer..."

Lin Xiao looked shocked: "What are you doing? Don't talk nonsense, I don't know."

Wang Wenguang paused. Although he was in his forties, because he studied computers and surfing the Internet was naturally very common, he understood what Lin Xiao meant, so he quickly said: "Professor Lin, don't misunderstand. What I do is a computer, a DIY console, you know that, right?"

DIY host is to buy a CPU, graphics card, memory, hard disk, etc., and then install it into a computer. This kind of thing is very normal for people like Wang Wenguang who are engaged in supercomputers. Strictly speaking, Sunway TaihuLight, It can be regarded as a machine assembled by them DIY.

Lin Xiao suddenly realized that he naturally knew this. Which boy didn't dream of assembling a console of his own when he still loved playing games?

But when he came to his senses, his face showed embarrassment. Fortunately, he was on the phone and his expression couldn't be seen.

Pretending to have forgotten the matter, he said: "Ahem, I know, I know, Director Wang, please continue."

Wang Wenguang also tacitly did not mention it. It would be fun if outsiders knew that Chief Engineer Lin of the X-ray Project and the Director of the Supercomputing Center were discussing this kind of thing.

"Ahem, in short, those of us who build supercomputers, like those who... assemble computers, all hope to use better accessories for computers."

"Professor Lin should also know that the most critical thing about a supercomputer is processor performance, and our current Sunway TaihuLight processor is no longer good in the world, so we people are like building a better supercomputer. Come out."

"It just so happens that we now have an X-ray lithography machine and can produce 5nm chips, so we thought about it and said whether we should build another supercomputer. The processor will also use 5nm. It will be full. Professor Lin, you What do you think?"

Lin Xiao was stunned and said: "This is a good thing. Our demand for supercomputers will definitely increase in the future. We also need more purely domestic supercomputers like Sunway TaihuLight. Otherwise, there will be no applications." Something to queue up for so long.”

Then he asked doubtfully: "But, Director Wang, why are you asking me this? I'm not from your computer industry."

Wang Wenguang suddenly smiled: "But you built the lithography machine! Professor Lin, I called you mainly to ask you for two things. The first thing is that if we find Huaxia Chip Manufacturing Company to build our When it comes to the processor chips we need, can you help us reduce the price?"

"The second thing is... uh, is Dingguang Research Institute interested in this matter? Our... budget may not be enough, so I just want to ask if Dingguang Research Institute can help?"

"Of course, after Dingguang Research Institute has paid for it, when the new supercomputer is built, Dingguang Research Institute will definitely be able to use it first if necessary."

Hearing the suggestion put forward by the other party, Lin Xiao was stunned. Good guy, it turned out that he had no money, and then he came to him for help?

However, after thinking about it for a moment, he felt that this proposal was good. He would inevitably need to use supercomputers in the future. Similarly, the future projects of Dingguang Research Institute would definitely use supercomputers.

Consider it an investment now.

So he said: "Director Wang, I very much agree with your proposal. Of course, we need to discuss more details later."

Wang Wenguang was naturally overjoyed when he heard that Lin Xiao had directly agreed, and immediately said: "Okay! That's for sure. Then when we have time, let's talk about the details?"

"Okay." Lin Xiao said.

The two hit it off and decided on the matter for the time being.

After they agreed on a time, they stopped talking and hung up the phone.

Similarly, Lin Xiao can wait two days before using the Divine Power Taihu Light.

…

Two days later, Lin Xiao logged into the website again and saw that her application was approved and she could get on the machine.

So he quickly operated the computer and entered the node. Then, he entered into the program the partial differential equation that he modified and could be used to describe the interaction between Fermi liquids.

Then click Enter and the calculation begins.

He stared at the computer screen, anticipating the final result.