Author: Christophe Theron
Date: 20:00:54 08/02/00
Go up one level in this thread
On August 02, 2000 at 16:19:20, blass uri wrote:
>On August 02, 2000 at 15:54:08, Alvaro Rodriguez wrote:
>
>>On August 02, 2000 at 15:26:23, Derrick Wilson wrote:
>>
>>>
>>> I am interested in blitz time controls, like 3 0
>>>and tournament time control 40/2?
>>
>>In blitz, 8 MB should work ok.
>>And in tournament control, it depends of how much memory you have.. If you have
>>64 MB, then 32 MB works fine under RT.
>>
>>Regards,
>>Alvaro
>
>I do not have chess tiger but
>I think that 8 Mbytes are too much in blitz
>
>I guess that for 3 minutes per game 2 Mbytes are enough because I read that
>there is a problem of losing on time and big hash tables may cause losing on
>time because tiger clears the hash tables.
That's right. Depending on the computer, 2 to 8Mb at 3 0 is the right value. I
would tend to suggest a value less than or equal to 4Mb. A too small hash table
will not hurt much, a too big one will certainly hurt.
>I think that tiger does not know today to change the hash table size when it has
>less time.
That's right. In an intermediate, non published, version of Chess Tiger I had
included an algorithm that was able to set the hash table size to the best value
depending on the time control and the speed of the computer.
But actually this algorithm will not be in the next release (Chess Tiger 13),
because I have rewritten the hash table management and now Tiger can use very
big hash tables at any time control, even game in one minute.
>I understood from some posts of the programmer that in the future it will be
>always better to give tiger as much as possible hash tables.
Absolutely. So we will never see again (I hope) the question "how much hash
table size for Tiger?".
Uri, I did not answer to your email so far. Sorry for this, I'm very busy at
this time. I'll answer, but later.
Christophe
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