Author: Christophe Theron
Date: 18:04:11 11/10/99
Go up one level in this thread
On November 10, 1999 at 17:51:07, leonid wrote:
>On November 10, 1999 at 13:31:45, Christophe Theron wrote:
>
>>On November 10, 1999 at 07:15:37, leonid wrote:
>>
>>>
>>>>You can do something faster in assembly, but it takes such a long time to
>>>>develop it that in the end you lose your advantage.
>>>>
>>>>Because chess programming is about being creative, and assembly lengthens the
>>>>time between the idea and the implementation. That's the key.
>>>>
>>>>
>>>> Christophe
>>>
>>>In reality, it is not writing the code that is the most time consuming in
>>>programming (at least in mine) but verification of each version of logic.
>>>Verification for speed. Writing the code take hardly 5 or 10% from the total
>>>time for creating the game. This is why language must have so little impact on
>>>the time of writing the chess game.
>>>
>>>If the last change in my logic took some 5 hours for writing it, after 4 days of
>>>verification of positions I still don't know how much advantage I can obtain
>>>from the last change. I imagine that the same is true for everybody. This is why
>>>I would like to hear from you, or somebody else, how much really the time goes
>>>in writing the game compared with everything else.
>>>
>>>Leonid.
>>
>>between one and two hours a day.
>>
>>Anyway that's not the problem.
>>
>>Here is how I look at it: 100% of the time I spend in my sources is spend
>>reading C, not assembly, and for me that makes a big difference.
>>
>>When I'm not in my sources, I'm not working on Tiger. When my program is running
>>automatic tests I work on something else.
>>
>>
>> Christophe
>
>Can hardly imagine how you do your test. For me the test for speed is the
>verification of time that two logics ask for solving the same position. I must
>verify big number of positions in order to be certain that response is not
>aberration. And deposition of big number of different positions, taken very
>often from different sources, take time. To give you one idea about aberration.
>The last time I verified the new logic on the first 20 position, just asking the
>game to play on its own. The speed improvement was 160%. After this I took the
>positions from the Chess Life and tryed the same there on around next 18.
>Advantage was hardly 10%. Where I am? I still don't know. Tomorrow will continue
>my verification.
>
>Leonid.
Being able to check if a change is an improvement or not is indeed the key to
really improve a program.
It is very important to invest time to find a good testing methodology.
Christophe
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