With the stamped application form, Xu Chuan came to the high-performance computing center of NTU and found Professor Zhou Qinglin, who was in charge of managing the entire supercomputing center.

"Professor Xu, a rare guest. What is the wind that blows you? ”

Zhou Qinglin, who was working, was stunned for a moment when he saw Xu Chuan, and then quickly got up and welcomed with a smile.

"Director Zhou, I came here this time mainly to apply for the use of supercomputing."

After saying hello to Zhou Qinglin with a smile, Xu Chuan explained his intention to him.

After listening to his request, Professor Zhou Qinglin looked surprised and surprised.

"You're saying you've built a visual-only mathematical control model for plasma turbulence in a controlled nuclear fusion reactor? Are you sure. Got me right? ”

To be honest, he Zhou Qinglin has been in charge of managing the supercomputing center of NTU for more than ten years, and he has seen a lot of various mathematical models, even including fluids, turbulence, plasma flow and other mathematical models.

But this is the first time he has seen a mathematical model of plasma turbulence in a controlled nuclear fusion reactor.

Although he is not a mathematician or a physicist, he has been in charge of the supercomputing center for so many years and more or less knows the meaning behind this model.

Xu Chuan shrugged his shoulders and said, "I don't need to waste everyone's time by joking about this, your time is precious, and mine is the same." ”

Hearing this, Zhou Qinglin laughed and said, "Professor Xu is joking, your time is much more precious than mine." ”

After a pause, he continued, "Did you bring that model here?" I'll take a look first. ”

Taking out the SSD with the model stored in the backpack, Xu Chuan handed it over, nodded and said, "Bring it, this is it." ”

Zhou Qinglin took the model, opened it curiously, and found that it was a hard disk, looked up at Xu Chuan, and teased: "It seems that this model is not small, and it needs to be saved with a hard disk." ”

Xu Chuan said with a smile: "The model is not big, but to run it, it is estimated that it is not so easy, I feel that the supercomputing center here may not be able to afford it." ”

Hearing this, Zhou Qinglin raised his eyebrows and said with a smile: "Then what you may need is not a supercomputer, but a quantum computer?" ”

Although the supercomputing of the NTU Supercomputing Center is not very strong, and it is not ranked in the domestic supercomputing ranking, after completing the upgrade in 15 years, 910 CPU computing nodes have been deployed, with a total of 21,840 CPU cores, and the theoretical computing peak is 870 trillion times per second.

This level of supercomputing, let alone a mathematical model, is not a problem if it is a hundred mathematical models operating together on it.

Of course, the model calculations in terms of fluids and turbulence are indeed complex, but in any case, the performance of NTU's supercomputing center is as high as nearly a quadrillion per second, and it is impossible to run it impossible.

However, he didn't say this, after all, Professor Xu studied mathematics and physics, and may not know much about computers.

"Come with me, I'll find someone to show you the model first." Professor Zhou Qinglin smiled and walked towards the laboratory of the supercomputing center with the hard drive.

He is only in charge of the supercomputing center, not a special expert.

As for the amount of computing power required for the plasma turbulence model made by Professor Xu, and how many arithmetic cores need to be divided, these still need to be known through expert judgment.

"Lao Liu, come and do me a favor, Professor Xu has a mathematical model that he wants to test, you can see how to divide the computing power."

In the laboratory, Zhou Qinglin shouted to another middle-aged man who was busy in front of the computer.

After hearing the shout, the middle-aged man in the laboratory quickly raised his head and looked over.

"Yo, Professor Xu." Lao Liu got up with a smile and walked over and shook hands with Xu Chuan warmly.

Xu Chuan responded with a smile: "Professor Liu, I'm in trouble with you." ”

"Hey, what's the trouble, serving Professor Xu, that's not how it should be." Lao Liu smiled and took the hard disk from Zhou Qinglin's hand, first connected it to the work computer and scanned it, and then connected to the supercomputing center after confirming that there was no problem.

Clicking on the hard disk and opening the files inside, Lao Liu looked at the data and image graphics displayed on the computer screen, and said after thinking for a moment: "Professor Xu, I'm afraid your model is not simple." ”

"If we want to do testing, I'm afraid we will have to stop most of the other tasks running in the supercomputing center."

On the side, Zhou Qinglin asked curiously, "Is it so complicated?" ”

Lao Liu nodded: "This is the most complex turbulence model I have ever seen, not only the simulation operation, but also contains various modules such as image energy burst simulation, collision simulation, magnetic constraint and so on." To test it completely, it requires a lot of computing power, and even our supercomputing center may not be able to drive it. ”

Zhou Qinglin swallowed his saliva and couldn't help but look at Xu Chuan.

Good guys, a model that can't be brought by supercomputing with a theoretical peak of 870 trillion times per second? Is this something that people can make? This Professor Xu probably has a quantum computing brain.

After carefully inspecting and analyzing, Lao Liu raised his head and looked at Xu Chuan, and said, "Professor Xu, if you want to test this model, I'm afraid you need to wait for some tasks that are being performed to end or can be suspended, and then you can free up the computing power before you can get it." ”

Xu Chuan asked, "How long do you have to wait?" ”

Lao Liu: "Are you in a hurry?" If you are in a hurry, it will take about a day or two, and Director Zhou will contact the school and suspend other tasks first. ”

"If you're not in a hurry, you'll have to wait for about a week, and there's a lot of work going on, and it will take some time."

Hearing this, Xu Chuan thought for a while, looked at Zhou Qinglin and asked, "Can you trouble Director Zhou to help communicate?" Test it first, if the model can't run here, I'll apply for help from the National Supercomputing Center. ”

Zhou Qinglin said with a smile: "No problem, anyway, there are no too important tasks recently, so it's okay to pause." ”

After Zhou Qinglin applied to NTU for communication, the notice and documents for the suspension of other calculation tasks came down quickly.

Although some researchers who were working on the calculations complained after receiving the notice, no one said anything after hearing that Professor Xu had cut the queue.

After all, it's not that the follow-up won't be counted for you, it's just a pause.

In the supercomputing center, it took two days to pause and save the running computing tasks in an orderly manner.

After dealing with these things, Xu Chuan's mathematical model was officially connected to the supercomputer.

In the control room of the supercomputing center, Xu Chuan was in a white anti-static suit, watching the staff in charge of processing the operation busy in front of the computer.

Beside them, Zhou Qinglin and Lao Liu stood aside and waited curiously.

It is the first time they have seen a mathematical model of simulated plasma turbulence in a controlled nuclear fusion reactor, and if this model can be successfully calculated, it will definitely be a Nobel Prize-level achievement for the physics community!

"At present, all the computing tasks in the supercomputing center have been suspended, and the supercomputing is currently running well, and we can start experiments at any time."

In the control room, after being busy for a while, a staff member reported the supercomputing situation to Zhou Qinglin.

Hearing this, Zhou Qinglin glanced at Xu Chuan, and Xu Chuan said with a smile: "Professor Zhou, you are in command, I don't understand this aspect." ”

"Okay." Zhou Qinglin nodded, turned his head and ordered, "Start the test." ”

After the order was given, the huge supercomputing center began to operate.

The supercomputer, with a theoretical computing peak of 870 trillion times per second, took out all its computing power after suspending other computing tasks, and the secondary replication model was transferred to the pre-assigned permission account in less than a second.

The staff in the control room quickly allocates nodes, cores, and other computing resources as required.

Although the scene of more than 900 computing nodes and 20,000 CPU cores working together is invisible to the naked eye, in the microcosm composed of 0s and 1s, this is an incomparably huge torrent, which is invincible in the face of any opponent in the past.

But today, they meet real adversaries.

The plasma turbulence model, which consists of mathematical formulas and operation rules, is rapidly decomposed into tens or even hundreds of billions of turbulence micro-unit structures after input of realistic parameters.

With the support of supercomputing and modeling, these turbulent structures rapidly evolved into a doughnut-like algorithm, which slowly runs in the supercomputer, simulating the plasma flow in a controlled nuclear fusion reactor.

Looking at the images and data jumping on the screen, Lao Liu, who was in charge of managing computing power, couldn't help but shake his head.

As he predicted before, the supercomputer of the NTU Supercomputing Center really can't afford this model.

At first, the operation was fine, and the computing power of the supercomputing center was enough to support it, but as the operation started, the output of the data became slow after the operation was entered into the realistic parameters as required.

This means that it takes longer for the supercomputing center to complete the operation and calculation of the model.

While it was true that the results were barely calculated, it was clear to everyone in the control room that this didn't make any sense for mathematical models that needed real-time control.

Turning his head, Lao Liu glanced at Xu Chuan and sighed: "Your model is too complicated, there are too many calculations for turbulence, and in China, perhaps only the top ten national computing centers can test it perfectly." ”

Xu Chuan stared at the screen, looked at the data on it and replied, "Let's take a look first, it's just a collection of data." ”

Lao Liu shook his head and said, "That's the only way." ”

In the control room, Zhou Qinglin, who was looking at the data calculated on the screen, couldn't help but smack his tongue.

The computing performance of NTU's supercomputing center is not the top three among universities in the country, but at least the top five, and it can't bring a mathematical model.

How did Professor Xu's brain come up with such a model.

Shaking his head, he looked at Xu Chuan and asked, "If such a complex model is really applied to controlled nuclear fusion, wouldn't it be necessary to build a separate large-scale supercomputing center for it?" ”

Xu Chuan shrugged his shoulders and said, "Why not?" As long as it's right. ”

Zhou Qinglin just wanted to say that this is too much of a waste of money, you must know that the construction of a supercomputing center can easily start at more than a billion yuan

But in an instant, I remembered that this is controlled nuclear fusion, and if it really works, it seems normal to build a supercomputing center dedicated to it?

ps: (Add more 10/10 to the alliance leader's big man's mountains and flowing water, phew, the big guy's plus more is finally done, and there are still some scattered rewards or something, write slowly.) )

There is also a chapter in the evening, asking for a monthly pass.

(End of chapter)