{"action":"created","issue":{"url":"https://api.github.com/repos/rapidsai/cudf/issues/284","repository_url":"https://api.github.com/repos/rapidsai/cudf","labels_url":"https://api.github.com/repos/rapidsai/cudf/issues/284/labels{/name}","comments_url":"https://api.github.com/repos/rapidsai/cudf/issues/284/comments","events_url":"https://api.github.com/repos/rapidsai/cudf/issues/284/events","html_url":"https://github.com/rapidsai/cudf/issues/284","id":369819770,"node_id":"MDU6SXNzdWUzNjk4MTk3NzA=","number":284,"title":"Random bad result  when summing when there is more than 1 million Float64","user":{"login":"julienfr112","id":2602096,"node_id":"MDQ6VXNlcjI2MDIwOTY=","avatar_url":"https://avatars0.githubusercontent.com/u/2602096?v=4","gravatar_id":"","url":"https://api.github.com/users/julienfr112","html_url":"https://github.com/julienfr112","followers_url":"https://api.github.com/users/julienfr112/followers","following_url":"https://api.github.com/users/julienfr112/following{/other_user}","gists_url":"https://api.github.com/users/julienfr112/gists{/gist_id}","starred_url":"https://api.github.com/users/julienfr112/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/julienfr112/subscriptions","organizations_url":"https://api.github.com/users/julienfr112/orgs","repos_url":"https://api.github.com/users/julienfr112/repos","events_url":"https://api.github.com/users/julienfr112/events{/privacy}","received_events_url":"https://api.github.com/users/julienfr112/received_events","type":"User","site_admin":false},"labels":[{"id":1016138296,"node_id":"MDU6TGFiZWwxMDE2MTM4Mjk2","url":"https://api.github.com/repos/rapidsai/cudf/labels/?%20-%20Needs%20Triage","name":"? - Needs Triage","color":"e99695","default":false},{"id":599626559,"node_id":"MDU6TGFiZWw1OTk2MjY1NTk=","url":"https://api.github.com/repos/rapidsai/cudf/labels/bug","name":"bug","color":"d73a4a","default":true}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":6,"created_at":"2018-10-13T16:51:31Z","updated_at":"2018-10-30T22:06:57Z","closed_at":null,"author_association":"NONE","body":"- [x] I am using the latest version of PyGDF from conda or built from `master`.\r\n- [x] I have included the following environment details:\r\nubuntu 18.04, 4.15.0-36-generic, gpu geforce 1050\r\n- [x] I have included the following version information for:\r\n      Arrow 10.0\r\n     CUDA 10.0,\r\n     Numpy 1.15.2\r\n     Pandas 0.20.3\r\n    Python 3.6.6 package by conda forge\r\n- [x] I have included below a minimal working reproducer (if you are unsure how\r\n\r\n```\r\nimport pandas as pd\r\nfrom random import random\r\ndf = pd.DataFrame({\"delta\":[random()*100000 for i in range(1000000)]})\r\n\r\nimport pygdf as cudf\r\ngdf = cudf.DataFrame({\"delta\":list(df[\"delta\"])})\r\n\r\nprint(\"pandas\",df[\"delta\"].sum())\r\nprint(\"pygdf\",gdf[\"delta\"].sum())\r\n```\r\n\r\n> \r\n> pandas 50018649374.26872\r\n> pygdf    50019130420.62466\r\n\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/rapidsai/cudf/issues/comments/434487580","html_url":"https://github.com/rapidsai/cudf/issues/284#issuecomment-434487580","issue_url":"https://api.github.com/repos/rapidsai/cudf/issues/284","id":434487580,"node_id":"MDEyOklzc3VlQ29tbWVudDQzNDQ4NzU4MA==","user":{"login":"harrism","id":783069,"node_id":"MDQ6VXNlcjc4MzA2OQ==","avatar_url":"https://avatars1.githubusercontent.com/u/783069?v=4","gravatar_id":"","url":"https://api.github.com/users/harrism","html_url":"https://github.com/harrism","followers_url":"https://api.github.com/users/harrism/followers","following_url":"https://api.github.com/users/harrism/following{/other_user}","gists_url":"https://api.github.com/users/harrism/gists{/gist_id}","starred_url":"https://api.github.com/users/harrism/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/harrism/subscriptions","organizations_url":"https://api.github.com/users/harrism/orgs","repos_url":"https://api.github.com/users/harrism/repos","events_url":"https://api.github.com/users/harrism/events{/privacy}","received_events_url":"https://api.github.com/users/harrism/received_events","type":"User","site_admin":false},"created_at":"2018-10-30T22:06:57Z","updated_at":"2018-10-30T22:06:57Z","author_association":"CONTRIBUTOR","body":"@julienfr112 it would help to have an answer to @jrhemstad 's question above. Does the bad result happen every time you run 170000 elements or only sometimes? If sometimes, can you quantify how often? Also, do you have another GPU you can test on?"}}
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