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Up Topic Rybka Support & Discussion / Rybka Discussion / Rybka uses all my memory, laptop overheats and shuts down
- - By rahidz Date 2008-08-08 12:09
What the...I never had this sort of a problem with Rybka 2.3, it stayed at about 35 MB (my computer only has 256MB of memory). Now when I run Rybka 3, it uses over 100 MB, the laptop becomes ridiculously hot (75-77 degrees C), and shuts down after a few minutes of analysis. Do I need to buy a new computer, or can I tell Rybka to slow things down?
Parent - By BB (****) Date 2008-08-08 12:18

>can I tell Rybka to slow things down?


Hmm, it seems that the "CPU Usage" UCI option (that was in previous versions) is now gone.
Parent - - By Apples (*) Date 2008-08-08 12:19
Rybka 3 uses 100% of my CPU by loading 2 seperate instances using ~50% each!
Parent - By rahidz Date 2008-08-08 13:13
Yes, I'd like an Apple very much right now :P
Parent - - By Permanent Brain (*****) Date 2008-08-08 19:33 Edited 2008-08-08 19:37
The memory consumption should not have significant impact on the temperature. It is the CPU load which causes the heat. Therefore, I do not understand why Rybka 3 causes a problem on your computer while Rybka 2.x did not, while running infinite analysis. Both should cause ~99% CPU load and thus, the same heat.

Except you have a multicore CPU and you were running single Rybka 2.x before (causing only 50% CPU on a dual), but MP-Rybka 3 now, but I doubt that a computer with 256 MB only is multicore.

256 MB total is certainly outdated, nowadays. It is a question of money (like anything :-) ). But if you can afford to buy another computer with 1 or 2 GB of memory, and maybe an Intel Core 2 CPU, you will feel like being warped into the future. The difference in feeling and performance will be trememdous. Or maybe you can simply add memory to your computer. But that will not solve temperature problems.
Parent - By M ANSARI (*****) Date 2008-08-08 20:03
Too much heat means R3 is working exactly as it should.  Successful chess engines use as much as possible of a CPU's cycles ... or close to 100% of the CPU's capacity.  This is much more than most other applications and will usually create more heat than usual.  I would be more worried if your laptop was staying cooler than usual with R3 running at full bore on all cylinders.  Most likely you were running a SP version of Rybka or had a MP version running only 1 core.  Laptops are generally not the best platform for chess engines ... especially if they are not wired to an AC socket and are on battery power. 
Parent - - By Svilponis (***) Date 2008-08-08 21:34
Laptops tend to collect dust on their cooling system, therefore it is wise to clean it sometimes. It is especially important to keep cooling system clean when running CPU intensive applications when there is hot summer time. Compressed air and soft brush are good tools for cleaning vents and radiators.
Parent - - By Laszlo (***) Date 2008-08-08 21:41
Cleaning? OK! but how?? there is no acces...
Parent - By Apples (*) Date 2008-08-08 22:10
Better to get a new one... they are pretty cheap nowadays
Parent - - By Svilponis (***) Date 2008-08-08 22:28
It depends on how the case is built. Many laptops have removable cover under the bottom, just where CPU cooler is located. Even if not, it is usually possible to have a look to the dust situation through the vent openings and it is possible to get some or even most of dust out without opening the case.
If you don't dare to clean the system yourself, then you can use some computer mainainance service.

Of course there is possibility, that your computer is clean enough and the problem is caused by other factors. But you may really wonder what you can find inside your laptop if you never cleaned it!
Parent - By Laszlo (***) Date 2008-08-10 19:28
thanks i will try it... carfully
Up Topic Rybka Support & Discussion / Rybka Discussion / Rybka uses all my memory, laptop overheats and shuts down

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