{"action":"created","issue":{"url":"https://api.github.com/repos/paul-buerkner/brms/issues/10","labels_url":"https://api.github.com/repos/paul-buerkner/brms/issues/10/labels{/name}","comments_url":"https://api.github.com/repos/paul-buerkner/brms/issues/10/comments","events_url":"https://api.github.com/repos/paul-buerkner/brms/issues/10/events","html_url":"https://github.com/paul-buerkner/brms/issues/10","id":115134594,"number":10,"title":"Speed question","user":{"login":"alireza202","id":6646274,"avatar_url":"https://avatars.githubusercontent.com/u/6646274?v=3","gravatar_id":"","url":"https://api.github.com/users/alireza202","html_url":"https://github.com/alireza202","followers_url":"https://api.github.com/users/alireza202/followers","following_url":"https://api.github.com/users/alireza202/following{/other_user}","gists_url":"https://api.github.com/users/alireza202/gists{/gist_id}","starred_url":"https://api.github.com/users/alireza202/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/alireza202/subscriptions","organizations_url":"https://api.github.com/users/alireza202/orgs","repos_url":"https://api.github.com/users/alireza202/repos","events_url":"https://api.github.com/users/alireza202/events{/privacy}","received_events_url":"https://api.github.com/users/alireza202/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-11-04T19:58:13Z","updated_at":"2015-11-05T02:56:17Z","closed_at":null,"body":"I have a question about the speed. I can run models like this:\r\n\r\n>brm(formula = y ~ x1 + x2 + x3 + (1 | subcat), \r\ndata = df,\r\nfamily = \"gaussian\",\r\nn.chains = 4,\r\nn.cluster = 4)\r\n\r\nwith 10,000 data points or less, and it runs in 10 minutes or so. But when I increase the size to 40,000, it takes almost 10 hours to run! Am I doing something wrong, or this is normal? I don't run out of memory and the machine has 4 cpus. How can I speed it up?"},"comment":{"url":"https://api.github.com/repos/paul-buerkner/brms/issues/comments/153939565","html_url":"https://github.com/paul-buerkner/brms/issues/10#issuecomment-153939565","issue_url":"https://api.github.com/repos/paul-buerkner/brms/issues/10","id":153939565,"user":{"login":"alireza202","id":6646274,"avatar_url":"https://avatars.githubusercontent.com/u/6646274?v=3","gravatar_id":"","url":"https://api.github.com/users/alireza202","html_url":"https://github.com/alireza202","followers_url":"https://api.github.com/users/alireza202/followers","following_url":"https://api.github.com/users/alireza202/following{/other_user}","gists_url":"https://api.github.com/users/alireza202/gists{/gist_id}","starred_url":"https://api.github.com/users/alireza202/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/alireza202/subscriptions","organizations_url":"https://api.github.com/users/alireza202/orgs","repos_url":"https://api.github.com/users/alireza202/repos","events_url":"https://api.github.com/users/alireza202/events{/privacy}","received_events_url":"https://api.github.com/users/alireza202/received_events","type":"User","site_admin":false},"created_at":"2015-11-05T02:56:17Z","updated_at":"2015-11-05T02:56:17Z","body":"Thanks for the tip. I'm running it with single chain, but it's still slow... It runs in half an hour with 20,000 data points, it works though."}}