{"action":"created","issue":{"url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/715","repository_url":"https://api.github.com/repos/official-stockfish/Stockfish","labels_url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/715/labels{/name}","comments_url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/715/comments","events_url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/715/events","html_url":"https://github.com/official-stockfish/Stockfish/pull/715","id":163535329,"number":715,"title":"Reduce think time for PGO optimization","user":{"login":"Stefano80","id":8758991,"avatar_url":"https://avatars.githubusercontent.com/u/8758991?v=3","gravatar_id":"","url":"https://api.github.com/users/Stefano80","html_url":"https://github.com/Stefano80","followers_url":"https://api.github.com/users/Stefano80/followers","following_url":"https://api.github.com/users/Stefano80/following{/other_user}","gists_url":"https://api.github.com/users/Stefano80/gists{/gist_id}","starred_url":"https://api.github.com/users/Stefano80/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Stefano80/subscriptions","organizations_url":"https://api.github.com/users/Stefano80/orgs","repos_url":"https://api.github.com/users/Stefano80/repos","events_url":"https://api.github.com/users/Stefano80/events{/privacy}","received_events_url":"https://api.github.com/users/Stefano80/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":3,"created_at":"2016-07-02T20:57:23Z","updated_at":"2016-07-02T21:38:39Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/official-stockfish/Stockfish/pulls/715","html_url":"https://github.com/official-stockfish/Stockfish/pull/715","diff_url":"https://github.com/official-stockfish/Stockfish/pull/715.diff","patch_url":"https://github.com/official-stockfish/Stockfish/pull/715.patch"},"body":"In the forum, somebody hinted that faster think in PGO build makes faster compiles. I cannot reconstruct who. I tried it out by setting time = 300 ms. I got following results:\r\n\r\nDepth 13, 50 samples\r\n\r\nEngine                                       | Nodes/second\r\nstockfish_profile_branch        | 2195015.5 +- 3933.6\r\nstockfish_profile_master        | 2185190.0 +- 3010.52\r\n\r\nDifferences                               | 10108.0 +- 626.0\r\nVariance of the mean             | 88.53 ( 0.88 %)\r\nSpeed up                                  | 0.46 %\r\n\r\nDepth 16, 5 samples\r\n\r\nDepth 16\r\n\r\nEngine                          | Nodes/second\r\nstockfish_profile_branch        | 2227159.0 +- 8811.64\r\nstockfish_profile_master        | 2214783.0 +- 10765.08\r\n\r\nDifferences                     | 12376.0 +- 1953.0\r\nVariance of the mean            | 873.41 ( 7.06 %)\r\nSpeed up                        | 0.56 %\r\n\r\nTTD 30 from starting position, one sample \r\n\r\nbranch:\r\ninfo depth 30 seldepth 43 multipv 1 score cp 17 nodes 443679765 nps 1692516\r\nmaster:\r\ninfo depth 30 seldepth 43 multipv 1 score cp 17 nodes 443679765 nps 1694151\r\nSpeed up: -0.10%\r\n\r\nCan anybody (dis)confirm?"},"comment":{"url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/comments/230123244","html_url":"https://github.com/official-stockfish/Stockfish/pull/715#issuecomment-230123244","issue_url":"https://api.github.com/repos/official-stockfish/Stockfish/issues/715","id":230123244,"user":{"login":"mstembera","id":5421953,"avatar_url":"https://avatars.githubusercontent.com/u/5421953?v=3","gravatar_id":"","url":"https://api.github.com/users/mstembera","html_url":"https://github.com/mstembera","followers_url":"https://api.github.com/users/mstembera/followers","following_url":"https://api.github.com/users/mstembera/following{/other_user}","gists_url":"https://api.github.com/users/mstembera/gists{/gist_id}","starred_url":"https://api.github.com/users/mstembera/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mstembera/subscriptions","organizations_url":"https://api.github.com/users/mstembera/orgs","repos_url":"https://api.github.com/users/mstembera/repos","events_url":"https://api.github.com/users/mstembera/events{/privacy}","received_events_url":"https://api.github.com/users/mstembera/received_events","type":"User","site_admin":false},"created_at":"2016-07-02T21:38:39Z","updated_at":"2016-07-02T21:38:39Z","body":"Yes I have posted this previously measuring a variance as high as 4%.\r\nhttps://groups.google.com/forum/?fromgroups=#!topic/fishcooking/3MPZBRJtNZE\r\n"}}
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