Chapter 999 You Win, Win, Win, and Finally Lose Everything

Jameson had a terrible conjecture in his mind at this time.

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

This bug should be so unpopular that even he himself does not know about it.

But Chang Haonan knows.

Moreover, he has known it for a long time.

If this is true, then...

The whole competition is a game.

A set game.

In the preliminary stage, two questions that are most advantageous for COMSOL and do not involve viscoelastic constitutive equations were selected, so that the participating teams using COMSOL software can get far more than expected results.

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

And the finals are the real killer.

Two-phase flow calculation, pure CFD problem.

It seems that COMSOL still has the advantage.

But as long as the bug can be triggered, the results of all teams using COMSOL can collapse.

Even no results can be achieved at all!

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

So, Jameson asked Hermia to look at the calculation results without saying anything.

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

As for BUG, ​​even if there is, it can be fixed slowly.

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

Then there is no need to consider BUG for the time being.

Just prepare for public relations...

Professor Jameson didn't even know how he left the elevator.

When he came to his senses again, he found himself sitting on the sofa at the front desk of the hotel.

He didn't have time to think too much, and quickly touched his pocket, but found that he didn't bring his mobile phone.

So he rushed to the front desk in a hurry, borrowed the landline and dialed Heltz's number...

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

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

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

"Lemi?"

"Joe?"

She called out twice tentatively.

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

"Hermia, I think we... are in trouble."

Hermia, who had a bad premonition, twitched her mouth suddenly, and her heart sank:

"What exactly is going on?"

She walked back to her own machine 3.

On the screen, it was the calculation she started before she went to rest.

Now, as she expected, the result has come out.

But it is not completely out.

Because...

"Calculation divergence?"

Hermia also showed a ghostly expression:

"How is it possible?"

The computer room was once terribly quiet.

Only the faint creaking sound of the hard disk occasionally sounded.

"Actually... this is our second calculation."

George answered 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 the starting point and tried again, and the result... still diverged."

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

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

Either the method is wrong.

Or the tool is wrong.

But...

This is actually not important.

Because it is already the evening of the next day.

There are only 15 hours left to submit the answer.

Compared to those teams that found the problem early and reworked early, they didn't even have the opportunity to start over and submit a semi-finished product.

Lyles's face was terrible--

Just a few hours ago, he was judging other teams that were in trouble as if he was out of the matter.

However, when the same situation happened to him, he didn't find any signs.

Not to mention thinking of a solution.

"Hermi."

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

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

"..."

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

The professor should have just realized that there was a problem.

It is impossible to think of a solution in an instant.

Besides, even if he thought of it, there might not be time to change it.

George next to him was a little hesitant:

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

"Don't worry about that!"

Lyles roared in a low voice:

"Solve the problem first, at least submit a valid result!"

"Besides, just ask the professor for ideas, don't bring storage equipment in, the competition won't find it..."

He tended to abide by the rules before because he felt that he had a great advantage and could get good results even if he abided by the rules.

But now he is at a disadvantage, so he has naturally thrown those things behind him.

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

However, the result was similar to what she had expected.

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

In the end, he just sighed.

As for Heltz next to him, he slumped down on the sofa.

In fact, it stands to reason that for something like software, a bug, especially an unpopular bug that no one has reported for more than half a year, should not be a big deal at all.

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

Now even the bragging has been blown out.

The top three guaranteed places have also been loaned.

Everyone is waiting to see your dazzling performance.

But it turned out to be a failure.

That would be a pure clown.

All the previous publicity, all the derogation against Torch Group intentionally or unintentionally, and even all the intended orders.

Will become boomerangs, piercing their heads one by one.

Anyone who has been in contact with the fan circle knows one thing.

The most terrible backlash is called turning fans into haters...

No matter how you explain, you can't change the fact that COMSOL Multiphysics was thrown out of the horizon 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 whole industry will know that the BUG that COMSOL didn't even find was solved by Torch Group...

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

And considering the development speed of Torch Group and the entire numerical computing industry, a few years later...

Laughing to death, who still remembers who you are, COMSOL?

"Professor, is there really... really no way?"

Hermia asked with a little bit of unwillingness.

Jameson closed his eyes painfully and shook his head.

After a long while, he finally explained:

"At present, we can only be sure that the problem should be in the process of solving the viscoelastic constitutive equation. After the stability of elasticity increases to a certain critical value, the numerical solution will produce non-physical oscillations in the area of ​​rapid stress change, resulting in algorithm instability and calculation collapse."

"But why does this happen... It will probably take two days to know."

Why can we know in two days?

Because Chang Haonan will give a report in two days...

You will know after listening.

Of course, Jameson did not say this.

However, for Hermia, the result is already very clear-

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

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

"Then...then our final result is..."

No one answered.

In the end, it was Jameson who continued this sentence:

"Don't worry...I will help you pay for the cost of this trip to China..."

This sentence is almost a disguised admission.

No way.

Wait to die.

Hermia, sitting on the bed, opened her mouth.

She wanted to say that the three of them were not here for tourism, so what was the point of paying for the trip...

But in the end, looking at Jameson and Heltz who were also in despair, she swallowed the words back into her stomach...

"I know..."

Hermia supported herself on the edge of the bed and stood up again:

"I'll go and tell them about the situation..."