Author: Anthony Cozzie
Date: 06:46:24 11/12/04
Go up one level in this thread
On November 12, 2004 at 02:41:51, Daniel Shawul wrote: >On November 11, 2004 at 10:48:39, Anthony Cozzie wrote: > >>On November 11, 2004 at 09:30:05, Daniel Shawul wrote: >> >>>Today i finished organizing my BOARD class , and collecting some global >>>variables so that i can make a copy of a board easily. Problem is >>>I use 0x88 and piecelists which need huge for loops to copy. BITBOARDs look >>>easier. Is this too much of a problem? I am saying this because i think i have >>>to make a copy of the board each time a node is split. >>>daniel >> >>(from you-go-girl thread) >>1. Nf3xe5[S] Qd8-e7 2. Bf5-e4[S] d6xe5[S] 3. Be4xb7[S] Nf4xe2 4. Ke1xe2[S] >>Qe7xb7[S] 5. Qc3xe5[S] f7-f6[S] 6. Qe5-e6 Rf8-f7 7. b4xc5 b6xc5 8. Bb2xf6 Nb8-c6 >>9. Qe6-d5 Ra8-e8 10. Ke2-f1[S] Nc6-d4 11. Qd5xb7 Rf7xb7 12. Bf6xd4 >> = (1.15) Depth: 14/43 00:08:30.99 609709kN (1193 KN/s, 4649 splits, 459 aborts) >> >>Note that the program split only 5000 times in 8 minutes. >> >>I am with Bob on this one; split overhead is important but not THAT important. >> >>anthony > >Copying Board is relatively easier as compared to copying some other >stuff that should be copied. > > SEARCH_THREAD > { > BOARD > move[250] > score[250] > History[400] //all moves of a game > SEARCH_INFO > SEARCH_COUNTS > Killers > etc.. > } >After doing all that, i finally manged to make a copy of >a search_trade that can run independently! my search_trades >share only hashtables (main tt,pawn tt,eval tt,history_table). >And then i tried splitting the first root move > > if(move_count == 0) > { > copyThrade = Copy search trade > -search(copyThrade,....) > copy back results > } > else > continue normally > >This worked fine. but the problem is doing only one split at the node >already decreased the nps by 10,000?? Am I copying some unnecessary stuff >or is this expected? > >best >daniel If you are doing one split every node then sure, I can see that. Remember you are going to be doing 1 split per 1000 nodes at MOST. Zappa actually copies <1 KB per split. I'll let you figure out how I did that :) anthony
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