How deep is the analysis of Stockfish at the Lichess?

How deep is the analysis of Stockfish at the Lichess?

Well.. I think this info is the interest of all, for this reason I created the topic here.

I'd like to know how deep is the analyze of Stockfish offered here.

This knowledge is useful for us if we can realize a deeper analyse using our pcs or if the analyse is really made with a super computer and it's useless reanalyse with our personal computers.

For example, I can analyse at my computer with Stockfish Depth 30, Depth 35 takes a long time, but still ok yet. I'd like to know is the analyse provided for the lichess reaches with depths about 40, 45 or 50.

Since now Thanks. Best regards to all.

PS: Congratuations for the developers, amazing job has been done here.
And of course, Congratuations for the most users(players), they are polite and helpfull!
We are build a nice chess comunity at Lichess!

From the blog:

Lichess actually runs 74 instances of Stockfish that are spread across 8 servers, all in order to play chess moves and analyse games.

We upgraded Stockfish to the very latest development version. You could not wish for a finer engine.

We bought two new powerful servers (16 cores, 24GB RAM each) for Stockfish. It allows us to raise the analysis time to 4 seconds per move and search deeper than 20 plies ahead.

for people not knowing what this means: my two years old laptop eg has 4 cores, 8GB RAM. RAM is used to store knowledge. The speed and amount of CPUs (cores) makes the engine ponder deeper. Some older engines can just use one CPU, newer ones like Stockfish can use many (This is the 'Threads' setting in Stockfishs options). But double amount of CPUs does not mean ponder twice as deep because with a bigger depth there are more move alternatives.

BTW for playing blitz, where the engine does not ponder very deep, a lower RAM is better because knowledge is calculated in the CPU and not taken from RAM which is faster. RAM only gets useful when going deep. So if i let my engines play blitz they just get 128 MB RAM each. During analyze the engine gets 4096 MB.