Stockfish "6.1 SMP" release?

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Lyudmil Tsvetkov
Posts: 6052
Joined: Tue Jun 12, 2012 10:41 am

Re: Stockfish "6.1 SMP" release?

Post by Lyudmil Tsvetkov » Mon Mar 30, 2015 10:07 pm

Dr.Wael Deeb wrote:
Lyudmil Tsvetkov wrote:
PaulieD wrote:ELO: 18.98 +-1.8 (95%) LOS: 100.0%
Total: 39709 W: 6719 L: 4552 D: 28438
40000 @ 60+0.05 th 1 Regression test (Remove some difficult to understand C++11 constructs)
20 elo is nothing.

A human can not observe that.
Very true....
1% of people using SF do so to run thousands of games between engines to measure progress.

99% use it to analyse games or play against the engine, and here 20 elo is very difficult or impossible to notice.

PaulieD
Posts: 205
Joined: Tue Jun 25, 2013 6:19 pm

Re: Stockfish "6.1 SMP" release?

Post by PaulieD » Mon Mar 30, 2015 10:18 pm

That is exactly my point.
The 20 Elo is for the 1% of people. The 99% use multi core where the difference is more substantial..

APassionForCriminalJustic
Posts: 415
Joined: Sat May 24, 2014 7:16 am

Re: Stockfish "6.1 SMP" release?

Post by APassionForCriminalJustic » Tue Mar 31, 2015 2:19 am

Lyudmil Tsvetkov wrote:I can not make a distinction between SF 6 and latest development.

I think it plays almost on the same level.
There have been major improvements... there is no same level... 19 ELO WITHOUT the major SMP improvements.

APassionForCriminalJustic
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Joined: Sat May 24, 2014 7:16 am

Re: Stockfish "6.1 SMP" release?

Post by APassionForCriminalJustic » Tue Mar 31, 2015 2:22 am

Lyudmil Tsvetkov wrote:
PaulieD wrote:ELO: 18.98 +-1.8 (95%) LOS: 100.0%
Total: 39709 W: 6719 L: 4552 D: 28438
40000 @ 60+0.05 th 1 Regression test (Remove some difficult to understand C++11 constructs)
20 elo is nothing.

A human can not observe that.
Numbers are numbers... 20 ELO is something, observable or not. And that's only with one thread.

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M ANSARI
Posts: 3423
Joined: Thu Mar 16, 2006 6:10 pm

Re: Stockfish "6.1 SMP" release?

Post by M ANSARI » Tue Mar 31, 2015 6:17 am

I think the jump in ELO is very important for human analysis if it is based on improvement in the SMP protocol used. I guess the 20 ELO gain is only for the core engine itself while the SMP improvements are for the multi processor efficiency. Humans analyzing with a computer can gain a tremendous amount of useful time by having an engine using available processors more efficiently. For example a 40 ELO increase due to MP efficiency in a quad core computer (very common today) would be equivalent to a doubling of cores on your hardware for free! You can never have enough speed when you are analyzing ... the more the better. Now if you are using the engine to play against ... to be honest probably a human would have a hard time noticing the difference between SF 4 and SF 6. A humans downfall against a computer will always be due to tactics and unless you can push the engine into a well studied line where almost every move by the computer is predictable, chances are the human will miss some silly tactical oversight and go down quickly after that.

Modern Times
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Re: Stockfish "6.1 SMP" release?

Post by Modern Times » Tue Mar 31, 2015 6:23 am

Lyudmil Tsvetkov wrote:
PaulieD wrote:Komodo 1399.48 64-bit 8CPU v SF 180315 64-bit 8CPU (Match)

Stockfish still 9-4 up in the match.

A lot better than TCEC noticeably so....
That is an old version of Komodo.

Komodo are already at 1405. :D
And 1399.48 was an experimental version with code changes not included in the main development branch. Whether those changes were good or bad or indifferent, whether 1400 would have been any better, no way of knowing just from that 50 games.

Jouni
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Joined: Wed Mar 08, 2006 7:15 pm

Re: Stockfish "6.1 SMP" release?

Post by Jouni » Tue Mar 31, 2015 7:26 am

I was speaking about SMP gains:

smp 50.50 +-8.1 (95%) LOS: 100.0%
no sleep 19.70 +-5.2 (95%) LOS: 100.0%
total +70 :!:
Jouni

zamar
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Re: Stockfish "6.1 SMP" release?

Post by zamar » Tue Mar 31, 2015 10:36 am

Jouni wrote:Isn't +70 ELO for high end computers worth of official compile now!? There has been commercial releases for 10-20 ELO or even less :wink: .
To guarantee the quality of a release, we'll release at maximum twice a year.

People who want to have the latest and greatest and can always download and use the latest development snapshot.

And from practical perspective - very few people actually have >= 16 core box in their hands, so the extra release would benefit only very few individuals. And again, they can use the dev snapshot.
Joona Kiiski

BBauer
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Re: Stockfish "6.1 SMP" release?

Post by BBauer » Tue Mar 31, 2015 10:40 am

That sounds reasonable.

Kind regards
Bernhard

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