ChessUSA.com TalkChess.com
Hosted by Your Move Chess & Games
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

help - gprof output
Post new topic    TalkChess.com Forum Index -> Computer Chess Club: Programming and Technical Discussions Flat
View previous topic :: View next topic  
Author Message
Chan Rasjid



Joined: 09 Mar 2006
Posts: 323
Location: Singapore
PostPost subject: help - gprof output    Posted: Thu Jul 29, 2010 8:07 am Reply to topic Reply with quote
Hello,

I am trying to trim things down as my cowrie nps is far below those of others; on my computer (Debian linux athlon64 1 core) in the early positions from startpos:-
1) Crafty 23.3 - 1.3/ 2.0 M nps; I suspect the nps count has error.
2) Robbolit - 1M nps
3) Stockfish - 800,000/900,000 nps.
4) Spark - 600,000/700,000 nps.
5) my Cowrie - 300,000 - 350,000 nps.
6) Gaviota - 250,000 - 300,000 nps.

The is from gcc gprof:
Quote:

Flat profile:

Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls s/call s/call name
38.16 7.90 7.90 18218398 0.00 0.00 eval
9.62 9.89 1.99 11308265 0.00 0.00 gen_qs
8.29 11.60 1.72 bitcnt
7.25 13.10 1.50 1833258 0.00 0.00 gen_quiet_moves
6.24 14.39 1.29 13428251 0.00 0.00 probehash
4.71 15.37 0.98 2037 0.00 0.01 search_pvs
4.59 16.32 0.95 8654368 0.00 0.00 search_quiesce
3.92 17.13 0.81 bitScanForward
2.85 17.72 0.59 13824695 0.00 0.00 swapBestMove
2.56 18.25 0.53 unmake
2.27 18.72 0.47 10573508 0.00 0.00 updatehash
1.96 19.12 0.41 makemove
1.74 19.48 0.36 init_material_table
1.40 19.77 0.29 723374 0.00 0.00 gen_evade_check
0.97 19.97 0.20 ev_pawn_shelter_w
0.80 20.14 0.17 is_incheck
0.65 20.27 0.14 xyRookAttack
0.58 20.39 0.12 2919456 0.00 0.00 swapMoveFront
0.51 20.50 0.11 2 0.05 0.05 allocatehash
0.29 20.56 0.06 2 0.03 0.03 initTT
0.15 20.59 0.03 455647 0.00 0.00 set_move_score
0.12 20.61 0.03 is_sq_attacked_brq
0.10 20.63 0.02 1 0.02 8.17 uci
0.07 20.65 0.02 257295 0.00 0.00 eval_bishop_ah7_trap


Can someone confirm the following:
1) % time of a function exclude the time spent within child calls that are profiled and listed. eg, search_pvs() and search_quiesce() exclude time spent in probehash();
2) the 6.24% of probehash() seems costly; it only probes TT 4 times and extract entry data only; it is more costly than the full search search_pvs() ! Is there anything suspicious?

Thanks,
Rasjid
_________________
Don't believe when you're told "There's no free lunch!" There is Linux.
Back to top
View user's profile Send private message
Display posts from previous:   
Subject Author Date/Time
help - gprof output Chan Rasjid Thu Jul 29, 2010 8:07 am
      Re: help - gprof output Gian-Carlo Pascutto Thu Jul 29, 2010 9:05 am
            Re: help - gprof output Chan Rasjid Thu Jul 29, 2010 9:32 am
      Re: help - gprof output Robert Hyatt Thu Jul 29, 2010 5:02 pm
            Re: help - gprof output Chan Rasjid Fri Jul 30, 2010 9:32 am
                  Re: help - gprof output Volker Annuss Fri Jul 30, 2010 10:09 am
                        Re: help - gprof output Manuel Diaz Fri Jul 30, 2010 11:11 am
                        Re: help - gprof output Chan Rasjid Fri Jul 30, 2010 3:09 pm
                              Re: help - gprof output Gian-Carlo Pascutto Fri Jul 30, 2010 3:58 pm
                                    Re: help - gprof output Chan Rasjid Fri Jul 30, 2010 4:35 pm
                                          Re: help - gprof output Robert Hyatt Fri Jul 30, 2010 4:46 pm
                                          Re: help - gprof output Gian-Carlo Pascutto Sat Jul 31, 2010 6:19 pm
                                                Re: help - gprof output Chan Rasjid Sat Jul 31, 2010 9:58 pm
                              Re: help - gprof output Robert Hyatt Fri Jul 30, 2010 4:43 pm
                                    Re: help - gprof output Chan Rasjid Fri Jul 30, 2010 5:36 pm
                                          Re: help - gprof output Robert Hyatt Fri Jul 30, 2010 6:51 pm
                                                Re: help - gprof output Karlo Bala Jr. Fri Jul 30, 2010 7:04 pm
                                                      Re: help - gprof output Robert Hyatt Fri Jul 30, 2010 7:12 pm
                                                            Re: help - gprof output Karlo Bala Jr. Fri Jul 30, 2010 7:37 pm
                                          Re: help - gprof output Karlo Bala Jr. Fri Jul 30, 2010 6:53 pm
                                                Re: help - gprof output Chan Rasjid Fri Jul 30, 2010 10:28 pm
                                                      Re: help - gprof output Karlo Bala Jr. Fri Jul 30, 2010 10:51 pm
                                                            Re: help - gprof output Chan Rasjid Fri Jul 30, 2010 11:48 pm
                                                                  Re: help - gprof output Robert Hyatt Sat Jul 31, 2010 12:20 am
                                                                  Re: help - gprof output Karlo Bala Jr. Sat Jul 31, 2010 12:22 am
                                                                        Re: help - gprof output Chan Rasjid Sat Jul 31, 2010 9:50 pm
                                                      Re: help - gprof output Robert Hyatt Sat Jul 31, 2010 12:17 am
                  Re: help - gprof output Robert Hyatt Fri Jul 30, 2010 4:40 pm
Post new topic    TalkChess.com Forum Index -> Computer Chess Club: Programming and Technical Discussions

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum




Powered by phpBB © 2001, 2005 phpBB Group
Enhanced with Moby Threads