{"action":"created","issue":{"url":"https://api.github.com/repos/lachesis/scallion/issues/49","labels_url":"https://api.github.com/repos/lachesis/scallion/issues/49/labels{/name}","comments_url":"https://api.github.com/repos/lachesis/scallion/issues/49/comments","events_url":"https://api.github.com/repos/lachesis/scallion/issues/49/events","html_url":"https://github.com/lachesis/scallion/issues/49","id":54720303,"number":49,"title":"Needed >18 hours instead of 7 hours. Bug?","user":{"login":"JHGitty","id":5406438,"avatar_url":"https://avatars.githubusercontent.com/u/5406438?v=3","gravatar_id":"","url":"https://api.github.com/users/JHGitty","html_url":"https://github.com/JHGitty","followers_url":"https://api.github.com/users/JHGitty/followers","following_url":"https://api.github.com/users/JHGitty/following{/other_user}","gists_url":"https://api.github.com/users/JHGitty/gists{/gist_id}","starred_url":"https://api.github.com/users/JHGitty/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JHGitty/subscriptions","organizations_url":"https://api.github.com/users/JHGitty/orgs","repos_url":"https://api.github.com/users/JHGitty/repos","events_url":"https://api.github.com/users/JHGitty/events{/privacy}","received_events_url":"https://api.github.com/users/JHGitty/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-01-19T02:21:55Z","updated_at":"2015-01-19T02:43:43Z","closed_at":null,"body":"CPU: Intel Core i7-3770k.\r\nGPU: nVidia EVGA GTX 680 Classified\r\n\r\nI bruteforced a 9 character long prefix.\r\nIt should take around 7 hours. It really needed 18 hours and 51 minutes.\r\n\r\nWhy so long? Bug?\r\n---\r\ninit: 464ms / 1 (464ms, 2,16/s)\r\ngenerate key: 1540738ms / 44969 (34,26ms, 29,19/s)\r\ncpu precompute: 1740ms / 44969 (0,04ms, 25844,25/s)\r\ntotal without init: 67914829ms / 1 (67914829ms, 0/s)\r\nset buffers: 18121ms / 2787744 (0,01ms, -83175,5/s)\r\nwrite buffers: 78186ms / 2787744 (0,03ms, -19277,41/s)\r\nread results: 67257445ms / 2787744 (24,13ms, -22,41/s)\r\ncheck results: 6585ms / 2787744 (0ms, -228887,36/s)\r\n688,67 million hashes per second\r\n---\r\nLoopIteration:2787732  HashCount:46770381,91MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787733  HashCount:46770398,69MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787734  HashCount:46770415,47MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787735  HashCount:46770432,25MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787736  HashCount:46770449,02MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787737  HashCount:46770465,80MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787738  HashCount:46770482,58MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787739  HashCount:46770499,35MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787740  HashCount:46770516,13MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787741  HashCount:46770532,91MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787742  HashCount:46770549,69MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787743  HashCount:46770566,46MH  Speed:688,7MH/s  Runtime:18:51:5\r\nLoopIteration:2787744  HashCount:46770583,24MH  Speed:688,7MH/s  Runtime:18:51:5\r\n4  Predicted:07:05:45  Found new key! Found 1 unique keys.\r\n\r\nCalculation\r\n---\r\n2^(5*(9 characters)-1)/(688000000 Hashes per second)/(60 seconds)/(60 minutes)\r\n~ 7,1 hours"},"comment":{"url":"https://api.github.com/repos/lachesis/scallion/issues/comments/70440221","html_url":"https://github.com/lachesis/scallion/issues/49#issuecomment-70440221","issue_url":"https://api.github.com/repos/lachesis/scallion/issues/49","id":70440221,"user":{"login":"lachesis","id":347481,"avatar_url":"https://avatars.githubusercontent.com/u/347481?v=3","gravatar_id":"","url":"https://api.github.com/users/lachesis","html_url":"https://github.com/lachesis","followers_url":"https://api.github.com/users/lachesis/followers","following_url":"https://api.github.com/users/lachesis/following{/other_user}","gists_url":"https://api.github.com/users/lachesis/gists{/gist_id}","starred_url":"https://api.github.com/users/lachesis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lachesis/subscriptions","organizations_url":"https://api.github.com/users/lachesis/orgs","repos_url":"https://api.github.com/users/lachesis/repos","events_url":"https://api.github.com/users/lachesis/events{/privacy}","received_events_url":"https://api.github.com/users/lachesis/received_events","type":"User","site_admin":false},"created_at":"2015-01-19T02:43:43Z","updated_at":"2015-01-19T02:43:43Z","body":"No, searching for hashes is a probabilistic process, just like Bitcoin\nmining. There's no upper or lower bound on the number of tries (and\ntherefore time) required to solve a particular pattern. Variances 2 or\n3x are uncommon but not surprising for a small number of patterns.\n\nHowever, if you've solved, say, 100 8-character prefixes and on average\nthey take 2-3x the predicted time, something might be up. We've not done\na lot of testing with nvidia cards, although they clearly are able to\nproduce results.\n\nOn 01/18/2015 06:21 PM, JHGitty wrote:\n>\n> CPU: Intel Core i7-3770k.\n> GPU: nVidia EVGA GTX 680 Classified\n>\n> I bruteforced a 9 character long prefix.\n> It should take around 7 hours. It really needed 18 hours and 51 minutes.\n>\n> ------------------------------------------------------------------------\n>\n> init: 464ms / 1 (464ms, 2,16/s)\n> generate key: 1540738ms / 44969 (34,26ms, 29,19/s)\n> cpu precompute: 1740ms / 44969 (0,04ms, 25844,25/s)\n> total without init: 67914829ms / 1 (67914829ms, 0/s)\n> set buffers: 18121ms / 2787744 (0,01ms, -83175,5/s)\n> write buffers: 78186ms / 2787744 (0,03ms, -19277,41/s)\n> read results: 67257445ms / 2787744 (24,13ms, -22,41/s)\n> check results: 6585ms / 2787744 (0ms, -228887,36/s)\n>\n>\n>     688,67 million hashes per second\n>\n> LoopIteration:2787732 HashCount:46770381,91MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787733 HashCount:46770398,69MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787734 HashCount:46770415,47MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787735 HashCount:46770432,25MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787736 HashCount:46770449,02MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787737 HashCount:46770465,80MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787738 HashCount:46770482,58MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787739 HashCount:46770499,35MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787740 HashCount:46770516,13MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787741 HashCount:46770532,91MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787742 HashCount:46770549,69MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787743 HashCount:46770566,46MH Speed:688,7MH/s\n> Runtime:18:51:5\n> LoopIteration:2787744 HashCount:46770583,24MH Speed:688,7MH/s\n> Runtime:18:51:5\n>\n>\n>     4 Predicted:07:05:45 Found new key! Found 1 unique keys.\n>\n> Bug?\n>\n> —\n> Reply to this email directly or view it on GitHub\n> <https://github.com/lachesis/scallion/issues/49>.\n>\n\n-- \nEric Swanson\nhttp://www.alloscomp.com/"}}