{"action":"created","issue":{"url":"https://api.github.com/repos/ethereum-mining/ethminer/issues/472","repository_url":"https://api.github.com/repos/ethereum-mining/ethminer","labels_url":"https://api.github.com/repos/ethereum-mining/ethminer/issues/472/labels{/name}","comments_url":"https://api.github.com/repos/ethereum-mining/ethminer/issues/472/comments","events_url":"https://api.github.com/repos/ethereum-mining/ethminer/issues/472/events","html_url":"https://github.com/ethereum-mining/ethminer/issues/472","id":284917734,"number":472,"title":"Reduced hashrate over time on K80","user":{"login":"reguly","id":1272533,"avatar_url":"https://avatars3.githubusercontent.com/u/1272533?v=4","gravatar_id":"","url":"https://api.github.com/users/reguly","html_url":"https://github.com/reguly","followers_url":"https://api.github.com/users/reguly/followers","following_url":"https://api.github.com/users/reguly/following{/other_user}","gists_url":"https://api.github.com/users/reguly/gists{/gist_id}","starred_url":"https://api.github.com/users/reguly/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/reguly/subscriptions","organizations_url":"https://api.github.com/users/reguly/orgs","repos_url":"https://api.github.com/users/reguly/repos","events_url":"https://api.github.com/users/reguly/events{/privacy}","received_events_url":"https://api.github.com/users/reguly/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-12-28T13:45:44Z","updated_at":"2017-12-28T18:56:59Z","closed_at":null,"author_association":"NONE","body":"A few months ago, running on a half of a dual-GPU NVIDIA K80 card, I was seeing around ~13 MH/s. This has now decreased to ~8 MH/s. At the same time, running the exact same way on a NVIDIA P100, there was no decrease - 70 MH/s now and a few months ago as well. Tested this on a different box, also with K80s, and saw the same issue.\r\nI tried playing around with CUDA thread blocksizes, streams, parallel-hash, but no significant change.\r\nAny ideas why this might be happening?"},"comment":{"url":"https://api.github.com/repos/ethereum-mining/ethminer/issues/comments/354337423","html_url":"https://github.com/ethereum-mining/ethminer/issues/472#issuecomment-354337423","issue_url":"https://api.github.com/repos/ethereum-mining/ethminer/issues/472","id":354337423,"user":{"login":"ddobreff","id":18449840,"avatar_url":"https://avatars2.githubusercontent.com/u/18449840?v=4","gravatar_id":"","url":"https://api.github.com/users/ddobreff","html_url":"https://github.com/ddobreff","followers_url":"https://api.github.com/users/ddobreff/followers","following_url":"https://api.github.com/users/ddobreff/following{/other_user}","gists_url":"https://api.github.com/users/ddobreff/gists{/gist_id}","starred_url":"https://api.github.com/users/ddobreff/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ddobreff/subscriptions","organizations_url":"https://api.github.com/users/ddobreff/orgs","repos_url":"https://api.github.com/users/ddobreff/repos","events_url":"https://api.github.com/users/ddobreff/events{/privacy}","received_events_url":"https://api.github.com/users/ddobreff/received_events","type":"User","site_admin":false},"created_at":"2017-12-28T18:56:59Z","updated_at":"2017-12-28T18:56:59Z","author_association":"COLLABORATOR","body":"Can you try on different DAG epoch, the easiest way is to mine on coin like MUSIC or UBIQ which have smaller DAG size.\r\n"}}
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