LS-ratinglist (news & comments)

[pohl4711]

Great! Thanks Stefan! I hope your testcomputer room is not like a sauna!

Eelco

Now 29 degrees Celsius in there. Because of this, on my two Quadcore-notebooks only 3 of 4 Cores are playing chess. Until now, no problems...

Stefan

[Dr.Wael Deeb]

Great! Thanks Stefan! I hope your testcomputer room is not like a sauna!

Eelco

Now 29 degrees Celsius in there. Because of this, on my two Quadcore-notebooks only 3 of 4 Cores are playing chess. Until now, no problems...

Stefan

Hi Stefan,

You can get a decent laptop cooler which will help a lot....

Belkin is a model to start with....
Cheers,
Dr.D

[pohl4711]

Great! Thanks Stefan! I hope your testcomputer room is not like a sauna!

Eelco

Now 29 degrees Celsius in there. Because of this, on my two Quadcore-notebooks only 3 of 4 Cores are playing chess. Until now, no problems...

Stefan

Hi Stefan,

You can get a decent laptop cooler which will help a lot....

Belkin is a model to start with....
Cheers,
Dr.D

I tried a laptop cooler and the CPU-temperature got higher!
The best way to use a notebook for chess is: put a book under it, so that a lot of air is below the notebook and use a vacuum cleaner every 2-3 weeks and clean the air-openings of the laptop-CPU (in- and out-opening) with maximum power.
And when it is hotter than 25 degrees only use 3 of 4 cores...

So do I and my notebooks are playing chess 24/7 without any problems since months and years.

Stefan

[Ajedrecista]

Hello Stefan:

The best way to use a notebook for chess is: put a book under it, so that a lot of air is below the notebook and use a vacuum cleaner every 2-3 weeks and clean the air-openings of the laptop-CPU (in- and out-opening) with maximum power.

Just as a side note, I have seen the following cooling method for heated laptops: use four shot glasses like this one:



One in each corner of the laptop. This method should allow more air flow under the laptop than the method with the book, if I imagine it correctly. Where did I see the method of shot glasses? In a bar, of course. The first time I saw it I thought to myself: 'what ingenious!' You can replace shot glasses by normal glasses of the same size, obviously.

Regards from Spain.

Ajedrecista.

[Eelco de Groot]

I would place the shotglasses upside down I think. The thick glass bottom will act as a heat sink, absorb some heat from the computer case from where it will travel downward to the thin sides. Because of the increasing surface area going down and cool air going up on the outside, you create a gradient that cools the glass on the whole outside area. Some of the heated air will end up up in the computer again but because it is hotter inside, the transfer of heat will still be good. Air under the glass is trapped but the thick bottom also acts as isolation against the warm air inside. As long as the sides of the glass are cooled enough by the air, inside the glass there will also be some circulation.

[Ajedrecista]

Hello Eelco:

I would place the shotglasses upside down I think. The thick glass bottom will act as a heat sink, absorb some heat from the computer case from where it will travel downward to the thin sides. Because of the increasing surface area going down and cool air going up on the outside, you create a gradient that cools the glass on the whole outside area. Some of the heated air will end up up in the computer again but because it is hotter inside, the transfer of heat will still be good. Air under the glass is trapped but the thick bottom also acts as isolation against the warm air inside. As long as the sides of the glass are cooled enough by the air, inside the glass there will also be some circulation.

I think that the shot glasses were upside down indeed, this is a detail that I forgot to mention in my previous post. It is logical due to the bigger area of the basis of each shot glass in comparison with the thin rim circunference. The only cares are provide a stable surface and not thrust the laptop because the four supports are fragile.

@Stefan: sorry for hijacking your thread with homemade cooling methods. It was just an attempt to help. Thank you very much for your effort!

Regards from Spain.

Ajedrecista.

[pohl4711]

The result of Stockfish 130727 is now online.

http://ls-ratinglist.beepworld.de/

(Perhaps you have to clear your browsercache or reload the website)


Stefan

[gladius]

The result of Stockfish 130727 is now online.

http://ls-ratinglist.beepworld.de/

(Perhaps you have to clear your browsercache or reload the website)


Stefan

Thanks for running it Stefan! Nice to see that an eval change on it's own can be a visible ELO improvement .

[pohl4711]

The result of Stockfish 130727 is now online.

http://ls-ratinglist.beepworld.de/

(Perhaps you have to clear your browsercache or reload the website)


Stefan

Thanks for running it Stefan! Nice to see that an eval change on it's own can be a visible ELO improvement .

Hi Gary,

I decided to test Stockfish 130729 (timestamp 1375053681), too. Because the test is running only on one machine (and only on 3 of 4 cores, because of the heat in Berlin), it will take still 6 days from now. But after 1400 of 10000 games the pruning-patch of Eelco de Groot looks really promising: +15 Elo to Stockfish 130727...(with very good intermediate results against Komodo CCT (>50%) and Critter 1.6a (>54%).
Its hard to believe, that this result will be stable until the end of the testrun, but we will see. Final result on wednesday, if all works correct.
Stay tuned!

Stefan

[gladius]

The result of Stockfish 130727 is now online.

http://ls-ratinglist.beepworld.de/

(Perhaps you have to clear your browsercache or reload the website)


Stefan

Thanks for running it Stefan! Nice to see that an eval change on it's own can be a visible ELO improvement .

Hi Gary,

I decided to test Stockfish 130729 (timestamp 1375053681), too. Because the test is running only on one machine (and only on 3 of 4 cores, because of the heat in Berlin), it will take still 6 days from now. But after 1400 of 10000 games the pruning-patch of Eelco de Groot looks really promising: +15 Elo to Stockfish 130727...(with very good intermediate results against Komodo CCT (>50%) and Critter 1.6a (>54%).
Its hard to believe, that this result will be stable until the end of the testrun, but we will see. Final result on wednesday, if all works correct.
Stay tuned!

Stefan

Great! Looking forward to the final result .