Military Industry of Great Powers: Build the Strongest Flanker.

Chapter 232 This is a revolution in China’s scientific community

Xu Weifan introduced the X109 computer. He opened the case cover and saw densely packed memory and graphics cards plugged into the case. Lei Jun was shocked.

"512M memory, Mr. Xu, you said it is 512M memory, not 512kb memory?"

"...It is indeed 512M memory..."

Lei Jun was a little confused about what was going on. His 386 computer currently has 256kb of memory. When programming, he racked his brains to think of how to save even 1kb of memory resources.

He couldn't imagine 512m of memory. How should such abundant resources be used?

And these thirty-two graphics cards?

“What is the graphics card used for?”

Lei Jun was like a countryman who had just arrived in the city. What he saw here had already subverted his understanding.

"Each graphics card has two scientific computing processors, which were originally designed for 3D display. In fact, the x109 is also very good at scientific computing. Each graphics card here integrates thirty-two graphics memory particles. 32M of video memory!”

"..."

Zhao Guoqing also came over at this time and said: "I heard that you programmed a vector computer. These thirty-two graphics cards have a total of sixty-four processors. The CPU can be used as a co-processor to coordinate these sixty-four processors. , the structure is similar to that of a vector computer.

Theoretically, these sixty-four processors can achieve tens of billions of calculations per second, but the actual performance depends on software optimization..."

"Ten billion calculations?" Lei Jun suddenly thought of something and asked, "Mr. Zhao, what's the performance of this processor?"

Xu Weifan said: "Intel's latest 486 is like a grandson in this regard. The overall performance of the 800Mhz processing speed is fifty times that of the 486!"

"..."

Lei Jun was so shocked that he was speechless. Is the technology of Institute 102 so terrifying? He couldn't imagine fifty times the performance of 486, and with tens of billions of calculations per second, it could already rank among the top ten supercomputers in the world!

Did we Chinese do this?

The terrifying 102 schools, no wonder they have to sign a confidentiality agreement!

Lei Jun had many questions in his mind, but what he wanted to know more was whether Zhao Guoqing had lied. Why wasn't 102 releasing such an advanced computer?

This computer has installed the Linux operating system. Under the guidance of Teacher Xiao Zhao, Linnard designed small components such as the device manager for this computer.

In the Linux system, all devices and files are all viewed as files.

The operation of hardware can be regarded as the modification of files.

The device manager is actually a collection of files, but applications can mobilize these files to complete the designed work.

Assistant Cheng Jianguo brought a large pile of documents, all of which were introductions to the system and hardware. Lei Jun needed to make up a lot of lessons.

Cheng Jianguo said: "No information is allowed to be taken out of the room. Any information taken out of the room is considered a leak. Mr. Lei, you must be clear!"

Lei Jun nodded. He had just programmed a small program on his computer. It was a small program with only a few lines of commands, but it required a lot of calculations.

He used a C language compiler and designed a loop statement to calculate from 1 to 100 million. It only took three seconds, while his 386 computer took a full half day to calculate this content.

And he called the graphics card to complete this calculation, and he completed the calculation before he felt the time.

Because the CPU takes into account logical operations, multimedia, process processing, etc., it is definitely not as fast as these professional graphics cards in scientific calculations. Lei Jun made a rough estimate and found that the computing power should be similar to what Mr. Zhao said.

Using 32 graphics cards and computing chips to work, Lei Jun faced tremendous pressure and also felt challenged.

"How's it going? Do you have any ideas?"

Lei Jun said: "Mr. Zhao, I don't know the usage scenarios of this computer. If I can clearly know the calculation content, I think we can mobilize these resources more efficiently!" Zhao Guoqing nodded, if Lei Jun's situation is not the same Understand, and dive in, he might doubt Lei Jun's quality as a software genius.

"This computer will be used for fluid design and structural simulation. By the way, Lei Engineering, do you know anything about finite element calculations?"

Lei Jun nodded and said, "I still know the basic principles!"

"Okay, just understand!" Zhao Guoqing said: "Large-scale vector calculations, high-order integral calculations, most applications are parallel calculations, there is no logical relationship between them!"

Lei Jun said: "If most of them are parallel calculations, then when the program is compiled, a parallel processing package will be directly generated and handed over to each processor for running. A table will be drawn up for each processor, divided into idle state and... "

Lei Jun came up with a preliminary plan, but Zhao Guoqing was noncommittal. He was not an expert in this matter, so he couldn't express his attitude.

"You draw up a plan first, and organize an expert review in a few days or seven days!"

"it is good!"

……

Whether computers can be promoted depends on the application and the adaptation of professional software in the industry. The Linux system is an operating system designed based on UNIX. Therefore, Unix software and Linux software have high compatibility and implement similar system call interfaces and command line tools.

This allows most Unix software to run directly on Linux without much modification. Although there are some subtle differences between Unix and Linux, such as file system layout, options for specific commands, etc., developers can usually easily port Unix applications to the Linux platform.

Of course, the installation package format and support library may be inconsistent, and direct use is of course not possible, but compiling from source files can usually solve this problem.

What Zhao Guoqing hopes Lei Jun will solve is to design resource calling tools at the system level to pave the way for these large-scale software.

For example, the 102 SMIC EDA software runs on the IBM service260 minicomputer, using the UNIX system, and can be easily transplanted to the Longteng x109 computer.

However, if you want it to work perfectly, you still need to do a lot of optimization.

Of course, EDA software is only one of the applications.

Teacher Xiao Zhao’s ambition is more than that, and the meaning of Longteng x109 is more than that.

"This will be a revolution in China's scientific community!"

This is what Ji Hongbo, the chief engineer of the 14th institute, said.

The completion rate of the Longteng x109 project has reached more than %, so Teacher Xiao Zhao naturally has to report the results to the General Staff.

At the same time, under the arrangement of the General Staff, the application adaptation work of Longteng x109 was carried out.

Ji Hongbo personally ran a program on the Longteng x109 and was shocked by the performance of this computer!

"It feels many times faster than Galaxy One!"

The design speed of Galaxy One ten years ago was only 100 million operations per second, which is actually only 30 million operations per second, while the design speed of Longteng is 10 billion operations, and it is floating point calculation, which is not the same level.

Ji Hongbo said with emotion: "I didn't expect it. I didn't expect that our ancestors used abacus and slide rules to calculate the amount of work for several months. Now it only takes a few seconds to complete it. This computer was made by our country!"

(End of this chapter)