The military-industrial scientific research system of the academic master.

The localization and improvement work of the J-11 aircraft is complicated, and structural upgrades are not the only thing that can be done.

Therefore, after receiving Chang Haonan's "suggestion", 601 Institute and 112 Factory quickly began to take action and adjusted their work focus in the recent period.

Chang Haonan, on the other hand, flew back to the capital after a short vacation.

The system of colleges and universities, if nothing else, can still guarantee holidays.

In 1997, the "National Holidays and Anniversary Days" that had been promulgated and implemented in 1949 was still implemented nationwide. There were only two days of holidays on November st.

Fortunately, since 1995, double holidays have been implemented every week, so including a weekend, I can take four days off.

It's a little closer to home, so I can go back to my last trip.

So when Chang Haonan came back to the computing center of Beijing Hang University and gathered the technical staff involved in software maintenance and updates for a meeting, it was already after the four-day holiday of National Day.

"Is this going to be a version update?"

After hearing about the sudden software plan at the morning meeting, the first reaction of most people was similar to that of He Ming a few days ago.

Chang Haonan sat at the head of the conference room and glanced at the dozen business backbones in front of him who were divided into two rows and sat opposite each other:

"The new grid generation method will be updated first for users of the professional upgraded version. The professional version will only retain relevant basic functions."

"The users of this professional upgraded version are highly professional universities and scientific research institutions involved in military projects. They have relatively strong independent capabilities. There should not be too many situations where we need to send people to upgrade."

The person in charge of the after-sales business finally looked a little better.

After taking a sip of water, Chang Haonan continued:

“In addition, this overlapping grid generation method based on the unstructured grid method does not have any new requirements for the time and space discretization methods in the subsequent calculation process, so basically it only needs to make major changes to the grid generation module. , other parts have not changed much.”

At this time, the benefits of clear thinking in previous software design are reflected.

If it's some shitty code, then if it affects the whole body, such a big functional change may require the software to be rewritten...

"Oh... not bad..."

At this time, except for a few people in charge of the grid generation module, everyone else breathed a sigh of relief.

No matter what age you are working in software, the working conditions are the same.

As long as you have a project, just working overtime is easy.

Sleeping in the workplace is commonplace.

Some people who are familiar with each other have even begun to joke about Tian Zhaoyi, the person in charge of the grid generation module who is sitting blankly:

"Come on, man..."

Someone patted him on the shoulder.

"Think on the bright side, our company pays overtime pay..."

Someone sighed with a concerned expression on their face.

"Yeah, it's almost the end of the year. It would be nice to make some extra money to go home to my wife and children for the New Year..."

Some people even sounded a little envious.

"..."

Human beings' joys and sorrows are not the same, I just think they are noisy.jpg

However, before they were overjoyed, Chang Haonan changed the subject:

"No need to envy them...overtime pay, everyone can have it..."

After hearing these words, the smiles on everyone's faces that had been joking lightly just now suddenly solidified on their faces.

"During this period of time, users have come back with a lot of opinions and suggestions. I just took this opportunity to revise all these areas together. I have probably seen it, and it is not a big problem. Try to release the first iteration of the new version within this month!”

People don't worry about scarcity but about inequality.

Now everyone has overtime and money, so I don’t feel there is any imbalance.

Moreover, after the trial version of the software was released, most of the staff who were seconded to participate in the development returned to their original units.

The people who are still here are all those who have directly transferred their working relationships.

Will choose to give up the stable job of the research institute. At this time, it seems that the first meal may not necessarily lead to the next meal for the new state-owned enterprises. They are more or less interested in TORCH Multiphysics, and even the entire field of numerical computing.

Academician Li Jie of the Institute of Computing Technology has acted with integrity in this matter, allowing everyone to choose whether to stay or leave on their own, which can be regarded as a strong support for the Torch Group.

Of course, it can be regarded as thanks to Chang Haonan for helping him open up the nationwide supercomputing and server market.

Shuguang Group, which could only rely on financial allocations to survive last year and even considered selling part of its shares to Dream Company to raise funds, has achieved positive profits this year.

Although it may not seem like a big deal at the moment, it is the beginning of Chang Haonan wielding a hoe against the former.

……

After deploying some less important tasks, Chang Haonan asked the heads of other modules and businesses to go back to work first.

Only a few backbones responsible for the grid generation module were left.

Although in the early stages of software development, he requires all personnel involved in R&D to understand the basic situation of other parts, this is mainly to avoid some compatibility problems during the development process of different modules.

Nowadays, software upgrade and maintenance work has become highly specialized, and the knowledge and skills required between different modules vary widely. Except for a very small number of people, it is no longer necessary or possible to understand everything.

"Mr. Chang, what is the specific difference between this non-structured overlapping grid method and the previous old method in terms of generation logic?"

After there were only a few knowledgeable people left in the entire conference room, the person in charge, Tian Zhaoyi, went straight to the point.

The time was tight and the task was heavy, and this was an area he had never touched before.

It feels like I have gone back to the time when I was in graduate school many years ago.

"Is there any literature that I can refer to?"

An assistant next to him also asked.

Under normal circumstances, when researchers want to enter a new field that they have never explored before, they will start with some review literature to get a general understanding, and then read a little bit about the specific research direction.

"No."

Chang Haonan shook his head decisively:

"Actually, even this term was randomly thought of by me some time ago."

The expressions of several people on the opposite side were stagnant.

Well, it’s our boss’ first initiative again.

In the few months since joining Torch Group, they have encountered more "original" technologies than in their entire careers.

"However, the unstructured overlapping grid method, like the structured overlapping grid method, requires overlapping grid system assembly before performing flow field calculations, that is, digging holes and determining the interpolation boundaries between grids and their host cells."

Chang Haonan said, opening the notebook on the table in front of him.

As the research content becomes more and more in-depth, even he himself can no longer solve all the problems by brainstorming alone. Especially now that there are not enough scientific research points to directly use the system to solve the problem, it is even more necessary to put some ideas into the system. Organized out:

“The difficulty is that there are no topological relationships between grid units and grid nodes in unstructured grids like in structured grids, so parts such as dynamic automatic grid assembly, efficient search technology, and inter-grid interpolation, All require new algorithms to complete.”

"The three most important parts are the classification of grid nodes and the definition of boundaries between grids, the search for host units, and the reconstruction of interpolation boundaries between grids..."

While Chang Haonan was introducing his ideas to several people, he was also contemplating another thing in his mind.

In engineering practice, the core of the new version of TORCH Multiphysics is to use limited memory and computing time to implement this complex non-structured overlapping grid generation method, focusing on the parallel computing technology that has been applied in the software.

But academically, the focus is on the front, the part he has already written in his notebook.

That is, the concept of "unstructured overlapping grid" itself.

Therefore, he was thinking about how to promote this concept.

After much deliberation, I can only use some leftover results to publish a paper——

Look, I have a very cool numerical simulation theory here.

What? Do you want to do research but don’t have the tools?

That's easy to say. I have it here. You can buy it and try it out first. You can experience my new method and I'm definitely not bragging.

However, the publicly released professional version does not provide supporting follow-up algorithms for the time being and can only be used for theoretical research.

If you want to use this method to solve practical problems...

Sorry, this can't be done.

You can choose to wait, the updated content of the professional version may be 1-2 years behind the level.

If you are unwilling to wait, you can also refer to the Italians and choose to cooperate with Chinese institutions or companies that have professional upgraded version authorization.

Or our Torch Group also undertakes related numerical calculation business.

It’s just that R&D results need to be shared to a certain extent.

This...you guys shouldn't have any objections, right?