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Is there such a thing as branchless move generation?
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John Hamlen



Joined: 18 Feb 2012
Posts: 25
Location: United Kingdom
PostPost subject: Re: Is there such a thing as branchless move generation?    Posted: Mon Jun 11, 2012 10:12 pm Reply to topic Reply with quote
Daniel Shawul wrote:

Well that is not a piece list.

LOL. Okay then, it's a list of squares that the pieces are on Wink. Wow, it's a tough crowd in tonight! Very Happy....
Daniel Shawul wrote:

You should be able to loop over pieces of certain kind without testing any flag. If that was the case, why not do what TSCP does with only board[64]? The comparison of piece lists with bitboards should be without degrading performance. A set of bitboards for knight,bisthop,etc do allow you to loop over each kind of piece separately. Also chars infact do waste a lot of space, when 4bits per square would be enough to store the piece type. So you see if you go this road , you should call this method a bitboard too Smile

Cheers Daniel, I will. And I take your point re: my 0x88 plan morphing into bitboards anyway. Just don't think my old neurons are ready to cope with a new (to me) way of movegen (SIMD bitboards) + a new architecture (GPUs) + a new programming language (OpenCL or CUDA or C++ AMP). So I'll be starting with 0x88 to get some experience and then - after finding that, even at 100% utilisation, 900 iterations to get a single move list(!) - use the experience gained to move to faster bitboards.
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Subject Author Date/Time
Is there such a thing as branchless move generation? John Hamlen Thu Jun 07, 2012 7:50 pm
      Re: Is there such a thing as branchless move generation? Gerd Isenberg Thu Jun 07, 2012 8:44 pm
            Re: Is there such a thing as branchless move generation? John Hamlen Thu Jun 07, 2012 10:18 pm
      Re: Is there such a thing as branchless move generation? Edmund Moshammer Thu Jun 07, 2012 10:57 pm
            Re: Is there such a thing as branchless move generation? John Hamlen Fri Jun 08, 2012 8:21 am
                  Re: Is there such a thing as branchless move generation? Sven Schüle Fri Jun 08, 2012 9:21 am
                        Re: Is there such a thing as branchless move generation? John Hamlen Fri Jun 08, 2012 10:31 am
                              Re: Is there such a thing as branchless move generation? Edmund Moshammer Fri Jun 08, 2012 10:41 am
                                    Re: Is there such a thing as branchless move generation? John Hamlen Sat Jun 09, 2012 1:17 pm
                              Re: Is there such a thing as branchless move generation? Daniel Shawul Fri Jun 08, 2012 11:12 am
                                    Re: Is there such a thing as branchless move generation? Edmund Moshammer Fri Jun 08, 2012 11:18 am
                                          Re: Is there such a thing as branchless move generation? Daniel Shawul Fri Jun 08, 2012 3:39 pm
                                                Re: Is there such a thing as branchless move generation? Vincent Diepeveen Sat Jun 16, 2012 9:07 am
                                                      Re: Is there such a thing as branchless move generation? Daniel Shawul Sat Jun 16, 2012 11:27 am
                                                            Re: Is there such a thing as branchless move generation? Vincent Diepeveen Sat Jun 16, 2012 11:35 am
                                    Re: Is there such a thing as branchless move generation? John Hamlen Sat Jun 09, 2012 2:43 pm
                                          Re: Is there such a thing as branchless move generation? Daniel Shawul Sat Jun 09, 2012 6:02 pm
                                                Re: Is there such a thing as branchless move generation? John Hamlen Sun Jun 10, 2012 2:21 pm
                                                      Re: Is there such a thing as branchless move generation? Daniel Shawul Sun Jun 10, 2012 6:33 pm
                                                            Re: Is there such a thing as branchless move generation? Daniel Shawul Sun Jun 10, 2012 7:16 pm
                                                                  Re: Is there such a thing as branchless move generation? Edmund Moshammer Sun Jun 10, 2012 9:24 pm
                                                                        Re: Is there such a thing as branchless move generation? Daniel Shawul Sun Jun 10, 2012 9:54 pm
                                                                  Re: Is there such a thing as branchless move generation? John Hamlen Sun Jun 10, 2012 10:14 pm
                                                                        Re: Is there such a thing as branchless move generation? Daniel Shawul Mon Jun 11, 2012 12:49 am
                                                                              Re: Is there such a thing as branchless move generation? John Hamlen Mon Jun 11, 2012 12:43 pm
                                                                                    Re: Is there such a thing as branchless move generation? Daniel Shawul Mon Jun 11, 2012 2:41 pm
                                                                                          Re: Is there such a thing as branchless move generation? John Hamlen Mon Jun 11, 2012 10:12 pm
                                                                                          Re: Is there such a thing as branchless move generation? Daniel Shawul Mon Jun 11, 2012 11:12 pm
                                                                                          Re: Is there such a thing as branchless move generation? John Hamlen Mon Jun 11, 2012 11:41 pm
                                                                        Re: Is there such a thing as branchless move generation? Vincent Diepeveen Sat Jun 16, 2012 9:56 am
                                                            Re: Is there such a thing as branchless move generation? John Hamlen Sun Jun 10, 2012 10:58 pm
                                          Re: Is there such a thing as branchless move generation? Gerd Isenberg Sat Jun 09, 2012 7:48 pm
                                                Re: Is there such a thing as branchless move generation? John Hamlen Sun Jun 10, 2012 5:28 pm
            Re: Is there such a thing as branchless move generation? Edmund Moshammer Fri Jun 08, 2012 10:32 am
                  Re: Is there such a thing as branchless move generation? John Hamlen Sat Jun 09, 2012 2:57 pm
                  Re: Is there such a thing as branchless move generation? Vincent Diepeveen Sat Jun 16, 2012 8:57 am
      Re: Zeta CL uses Magic Bitboards Srdja Matovic Mon Jun 11, 2012 2:53 pm
            Re: Zeta CL uses Magic Bitboards Gerd Isenberg Mon Jun 11, 2012 8:55 pm
                  Re: Zeta CL uses Magic Bitboards Srdja Matovic Mon Jun 11, 2012 9:35 pm
                        Re: Zeta CL uses Magic Bitboards Daniel Shawul Mon Jun 11, 2012 11:26 pm
                              Re: Zeta CL uses Magic Bitboards Srdja Matovic Tue Jun 12, 2012 1:16 am
                              Re: Zeta CL uses Magic Bitboards Gerd Isenberg Tue Jun 12, 2012 6:58 am
                                    Re: Zeta CL uses Magic Bitboards Daniel Shawul Tue Jun 12, 2012 1:46 pm
                                          Re: Zeta CL uses Magic Bitboards Srdja Matovic Tue Jun 12, 2012 2:35 pm
                                                Re: Zeta CL uses Magic Bitboards Daniel Shawul Tue Jun 12, 2012 4:37 pm
                                                      Re: Zeta CL uses Magic Bitboards Vincent Diepeveen Sat Jun 16, 2012 8:46 am
                                                            Re: Zeta CL uses Magic Bitboards Daniel Shawul Sat Jun 16, 2012 11:17 am
                                                                  Re: Zeta CL uses Magic Bitboards Vincent Diepeveen Sat Jun 16, 2012 11:30 am
                                                                        Re: Zeta CL uses Magic Bitboards Daniel Shawul Sat Jun 16, 2012 1:56 pm
                                                                              Re: Zeta CL uses Magic Bitboards Vincent Diepeveen Sat Jun 16, 2012 2:51 pm
                  Re: Zeta CL uses Magic Bitboards vs Kogge-Stone Srdja Matovic Tue Jun 12, 2012 1:05 am
                        Re: Zeta CL uses Magic Bitboards vs Kogge-Stone Gerd Isenberg Tue Jun 12, 2012 6:31 am
            Re: Zeta CL uses Magic Bitboards John Hamlen Mon Jun 11, 2012 10:35 pm
                  Re: Zeta CL uses Magic Bitboards Daniel Shawul Mon Jun 11, 2012 11:00 pm
      Re: Is there such a thing as branchless move generation? Vincent Diepeveen Sat Jun 16, 2012 8:40 am
      Re: Is there such a thing as branchless move generation? Vincent Diepeveen Sat Jun 16, 2012 9:23 am
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