Author: Robert Hyatt
Date: 18:38:29 10/13/02
Go up one level in this thread
On October 13, 2002 at 15:55:05, Vincent Diepeveen wrote: >On October 13, 2002 at 15:47:43, Jeremiah Penery wrote: > >>On October 13, 2002 at 14:14:13, Vincent Diepeveen wrote: >> >>>On October 13, 2002 at 13:50:24, Jeremiah Penery wrote: >>> >>>for any chessprogrammer it is very clear Jeremiah. >>> >>>It's 12 ply and the 6 only means that the hardware search can >>>be up to 6 ply within that 12 ply nominal. >> >>For the millionth time, explain 4(5) then. > >it's a lot easier when you try to imagine how you would start >a search. Look at 4 ply you want to involve other cpu's too. > >You have 480 chess chips. 9 out of 10 is idling anyway >(we know this because everyone says it was capable in theory >to get a billion nodes a second in theory, yet it got only >126 million nodes on average; there is no discussion here) > >you want to use as many cpu's as possible. So at the root you >ask a few chips. Of course you must take into account extensions too. Vincent, this is crap, crap, crap and more crap. Why don't you violate your most sacred rule and _first_ read something before posting? Look at Hsu's thesis on the two-level parallel search they did. They did a few plies on one cpu, then a few more splitting the tree among the SP processors, then a few more by splitting those sub-trees further using the chess chips. Your rambling above is simply _wrong_. They don't "ask a few chips at the root." That is nonsense. Always has been nonsense. Always will be nonsense. Quit trying to _imagine_ what they did and read his thesis to see what they _really_ did... > >If a 4 ply search for this chip is too much, then you split it. and >split it. Giving a 2 ply search to chip A, and a 3 ply search to >chip B. Never happens like that . _ever_. Contrary to you, I _have_ read his thesis... > >The 5 in short has no meaning here. Right. It is just a random character they forgot to clear in the buffer... > >You can see that the mainlines at the start of the game (so before >hashtables are filled with a lot of info that extends lines) >that the lines it gives at 4 , 5 , 6 ply is usually 1 ply long. No they aren't. Not in _my_ logs... Unless you talk about the start of a search after pondering and loading the hash table...
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