Why is the engine stopped on the opponent’s turn?

[Boubou78000]

When you look at the TCEC, you can see that when stockfish has played, he stops calculation. But can’t we use the computational time when it’s the opponent’s turn?

[Disservin]

This feature is called pondering, as is typically disabled at every tournament, both engines require the full power of the machine but this doesn't work when both engines are running.

[Boubou78000]

This feature is called pondering, as is typically disabled at every tournament, both engines require the full power of the machine but this doesn't work when both engines are running.

If I understood, it’s implemented but restricted by many tournaments?

[cj5716]

Yes, it is an unused feature most of the time