Chapter 999 You win, win, win, and finally lose everything

At this moment, a terrible guess occurred to Jameson's mind.

That is, the algorithm he designed, and of course the COMSOL 2.5 version of the software developed based on it, has bugs when numerically solving certain specific types of viscoelastic constitutive equations.

This bug must be so unpopular that even he doesn't know about it.

But Chang Haonan knew.

Moreover, I knew it a long time ago.

If this is true, then...

The whole competition is a game.

A set up.

In the preliminary round, two questions were selected that were most advantageous for COMSOL but did not involve viscoelastic constitutive equations, allowing the participating teams using COMSOL software to achieve results far beyond expectations.

It is equivalent to lowering their vigilance and luring the enemy deeper.

The final is the real killer move.

Two-phase flow calculation, a pure CFD problem.

It still looks like COMSOL has the upper hand.

But as long as that BUG can be triggered, the performance of all teams using COMSOL will collapse.

It may even be impossible to achieve any results!

Of course, if I want to explain this chain of thoughts clearly, it will take at least ten minutes.

That's why Jameson asked Hermia to see the calculation results without saying anything.

If everything is normal, then it proves that he is worrying too much.

As for BUGs, even if there are any, they can be fixed slowly.

And if the result cannot be calculated, or the result is obviously wrong...

Then you don’t have to worry about BUGs for the time being.

Just prepare for public relations...

……

Professor Jameson didn't even know how he got out of the elevator.

When I came to my senses, I found myself sitting on the sofa at the hotel front desk.

Without thinking too much, he quickly felt his pocket, but found that his cell phone was missing.

So he rushed to the front desk and borrowed a landline to dial Hirsch's number...

At the same time, Hermia hurried back to the engine room.

Although she was still confused, Jameson's abnormal behavior just now made her realize that the situation must be very serious.

Sure enough, when she pushed open the compartment door, she found the other two sitting in front of Unit 3 with grim faces, as motionless as two statues...

"Lemmy?"

"Jo?"

She called out twice tentatively.

Hearing Hermia's voice, Lyles' body shook slightly, and then he turned his head stiffly like a robot:

"Hermi, I think we're...in trouble."

Hermia, who had a bad premonition, twitched her lips and her heart sank.

"What exactly happened?"

Then he walked back to his own Unit 3.

On the screen were the calculations she had started before she went to rest.

Now, the result has come out as she expected.

But it’s not completely out.

because……

"Calculation divergence?"

Hermia also looked as if she had seen a ghost:

"how is this possible?"

There was a moment of eerie silence in the computer room.

Only the faint creaking sound of the hard drive occasionally could be heard.

"Actually... this is already our second time calculating this."

George replied in a hoarse voice:

"At three o'clock in the afternoon, the result of the calculation before you left had already diverged."

"Later, we adjusted the boundary conditions and starting point and tried again, but the result... was still divergent."

A problem may be caused by accidental factors or simply careless input errors.

But if the same problem occurs twice in a row, there are only two possibilities.

Or there is something wrong with the method.

Or there is something wrong with the tool.

but……

It doesn't really matter.

Because it was already the evening of the next day.

There are only 15 hours left to submit your answers.

Compared with those teams that discovered problems early and reworked quickly, they didn't even have the chance to start over and submit a semi-finished product.

Lyles's expression was horribly ugly.

Just a few hours ago, he seemed to be standing aside and judging other teams that were in trouble.

However, when the same situation happened to him, he did not notice any signs.

Not to mention thinking of a solution.

"Hermi."

A few minutes later, Lyles finally came to his senses and looked at Hermia behind him:

"Go find Professor Jameson and see if he has a solution..."

"..."

Hermia thought about Jameson's performance just now and felt that the possibility was probably very small.

The professor must have just realized that something was wrong.

It is impossible to come up with a solution in an instant.

Besides, even if I thought of it, I might not have time to change it.

George next to him was a little hesitant:

"But according to the rules of the competition..."

"Never mind that!"

Lyles growled:

"Let's solve the problem first. At least submit a valid result!"

"Besides, I'm just asking the professor for advice. If I don't bring any storage devices with me, the competition won't find out..."

He had previously tended to follow the rules because he had a great advantage in self-awareness and could get good grades even if he followed the rules.

But now that we are at a disadvantage, we have naturally put those things behind us.

Hermia hesitated for a moment, then turned and ran out again...

However, the result was pretty much what she had expected.

When Jameson heard Hermia say that their calculation results diverged and could not converge no matter how they adjusted the input settings, he was silent for a long time.

In the end, he just let out a long sigh.

As for Hertz next to him, he collapsed directly on the sofa.

In fact, it stands to reason that for something like software, a bug, especially an obscure bug that no one has reported for half a year, shouldn't be a big deal at all.

But the problem is that he created a lot of momentum in the month between the preliminary round and the final.

Now even the bragging has been blown out.

The top three guaranteed winners have also taken out loans.

Everyone is waiting to see your dazzling performance.

But the result was pulled.

That's pure clown.

All previous publicity, all intentional or unintentional denigration of Torch Group, and even all intended orders.

They will all turn into boomerangs and hit your head one by one.

Anyone who has been involved in fan circles knows one thing.

The most terrible backlash is called turning from pink to black...

No matter how you explain it, it cannot change the fact that COMSOL Multiphysics has been disgraced in public.

Every user will think about what happened in this competition before using it.

And this is not even the most embarrassing thing——

Two days later, the entire industry will know that the bug that COMSOL didn’t even discover has been solved by Torch Group…

This negative effect cannot be completely eliminated without a few years of effort.

Considering the development speed of Torch Group and the entire numerical computing industry, in a few years...

It’s so funny. Who still remembers who you are, COMSOL?

"Professor, is there really... really nothing you can do?"

' asked Hermia, who was still a little unwilling to give up.

Jameson closed his eyes in pain and shook his head.

After a long while, he finally started to explain:

"At present, we can only confirm that the problem should be that in the process of solving the viscoelastic constitutive equation, after the stability of the elasticity characterization increases to a certain critical value, the numerical solution will produce non-physical oscillations in the area where the stress changes rapidly, resulting in algorithm instability and calculation crash."

"But why this happened...it will probably take two days to find out."

Why can we know it in two days?

Because Chang Haonan will be giving a report in two days...

You will know after listening.

Of course, Jameson didn't say this out loud.

However, for Hermia, the result is clear -

If we can't even find the cause, then the solution is even more unrealistic.

She didn't stand still, and sat directly on the bed:

"Then...then our final result would be..."

No one answered.

Finally, it was Jameson who took over:

"Don't worry... I will cover the cost of your trip to China..."