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Speedup with bitboards on 64-bit CPUs
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Tord Romstad



Joined: 08 Mar 2006
Posts: 1750
Location: Oslo, Norway
PostPost subject: Speedup with bitboards on 64-bit CPUs    Posted: Fri Apr 27, 2007 8:39 am Reply to topic Reply with quote
I've been using bitboards for a while, and I am somewhat disappointed with the performance. On my 32-bit Core Duo, they are about 20-30% slower than my old mailbox board, it is therefore tempting to revert to the old board representation. Before I do so, I would like to know: How much of a speedup do bitboard programs usually see when running on a 64-bit CPU? Can I expect bitboards to be competitive with a mailbox board for my program if I upgrade to the 64-bit Core 2 Duo?

Tord
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Subject Author Date/Time
Speedup with bitboards on 64-bit CPUs Tord Romstad Fri Apr 27, 2007 8:39 am
      Re: Speedup with bitboards on 64-bit CPUs Mark Lefler Fri Apr 27, 2007 9:34 am
            Re: Speedup with bitboards on 64-bit CPUs Tord Romstad Fri Apr 27, 2007 11:04 am
                  Re: Speedup with bitboards on 64-bit CPUs Pradu Kannan Fri Apr 27, 2007 11:15 am
                  Re: Speedup with bitboards on 64-bit CPUs jswaff Sat Apr 28, 2007 12:21 am
      Re: Speedup with bitboards on 64-bit CPUs H.G.Muller Fri Apr 27, 2007 10:20 am
            Re: Speedup with bitboards on 64-bit CPUs Tord Romstad Fri Apr 27, 2007 11:13 am
                  Re: Speedup with bitboards on 64-bit CPUs Pradu Kannan Fri Apr 27, 2007 11:18 am
                        Re: Speedup with bitboards on 64-bit CPUs Tord Romstad Mon Apr 30, 2007 3:01 pm
                  Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Sun Apr 29, 2007 12:34 am
                        Re: Speedup with bitboards on 64-bit CPUs Tord Romstad Mon Apr 30, 2007 3:14 pm
                              Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Mon Apr 30, 2007 5:08 pm
                                    post gone?? Guetti Tue May 01, 2007 8:26 pm
                                          Re: post gone?? Gerd Isenberg Wed May 02, 2007 6:36 am
                                                Re: post gone?? Guetti Wed May 02, 2007 7:54 am
                                                Re: post gone?? H.G.Muller Wed May 02, 2007 3:47 pm
                                                      Re: post gone?? Gerd Isenberg Wed May 02, 2007 6:08 pm
      Re: Speedup with bitboards on 64-bit CPUs Charles Roberson Fri Apr 27, 2007 1:45 pm
            Re: Speedup with bitboards on 64-bit CPUs Vincent Diepeveen Sat May 19, 2007 5:20 pm
                  Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Mon May 21, 2007 5:34 pm
                  Re: Speedup with bitboards on 64-bit CPUs Tony Thomas Mon May 21, 2007 5:40 pm
                        Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Mon May 21, 2007 9:47 pm
                              Re: Speedup with bitboards on 64-bit CPUs Vincent Diepeveen Sat May 26, 2007 7:21 pm
                                    Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Sun May 27, 2007 9:41 pm
                                          Re: Speedup with bitboards on 64-bit CPUs Chan Rasjid Mon May 28, 2007 7:29 am
                                                Re: Speedup with bitboards on 64-bit CPUs Tony Thomas Mon May 28, 2007 9:04 pm
                                                Re: Speedup with bitboards on 64-bit CPUs Jacob Mon May 28, 2007 9:49 pm
                                                      Re: Speedup with bitboards on 64-bit CPUs Chan Rasjid Tue May 29, 2007 5:58 am
                                                            Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Tue May 29, 2007 3:18 pm
                                                                  Re: Speedup with bitboards on 64-bit CPUs Chan Rasjid Tue May 29, 2007 4:09 pm
                                                                        Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Tue May 29, 2007 9:23 pm
                                                                  Quiescence search width Steven Edwards Tue May 29, 2007 10:02 pm
                                                                        Re: Quiescence search width Greg McGlynn Wed May 30, 2007 3:36 pm
                                                                        Re: Quiescence search width Robert Hyatt Thu May 31, 2007 1:45 am
                                                                              Re: Quiescence search width Steven Edwards Thu May 31, 2007 2:16 am
                                                Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Tue May 29, 2007 3:15 pm
      Re: Speedup with bitboards on 64-bit CPUs Jon Dart Fri Apr 27, 2007 6:25 pm
            Re: Speedup with bitboards on 64-bit CPUs Michael Sherwin Fri Apr 27, 2007 11:32 pm
                  Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Sun Apr 29, 2007 12:38 am
                        Re: Speedup with bitboards on 64-bit CPUs Michael Sherwin Sun Apr 29, 2007 2:01 am
                              Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Mon Apr 30, 2007 12:41 am
      Re: Speedup with bitboards on 64-bit CPUs frank phillips Sat Apr 28, 2007 10:38 am
            Re: Speedup with bitboards on 64-bit CPUs Tord Romstad Mon Apr 30, 2007 3:22 pm
                  Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Mon Apr 30, 2007 8:59 pm
                        Re: Speedup with bitboards on 64-bit CPUs Michael Sherwin Tue May 01, 2007 9:55 am
                              Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Tue May 01, 2007 9:05 pm
                        Re: Speedup with bitboards on 64-bit CPUs H.G.Muller Tue May 01, 2007 11:38 am
                              Re: Speedup with bitboards on 64-bit CPUs Robert Hyatt Tue May 01, 2007 9:07 pm
      Re: Speedup with bitboards on 64-bit CPUs Shaun Brewer Tue May 01, 2007 11:20 pm
      Re: Speedup with bitboards on 64-bit CPUs Tord Romstad Fri May 11, 2007 8:16 am
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