{"action":"closed","issue":{"url":"https://api.github.com/repos/RadeonOpenCompute/ROCm/issues/195","repository_url":"https://api.github.com/repos/RadeonOpenCompute/ROCm","labels_url":"https://api.github.com/repos/RadeonOpenCompute/ROCm/issues/195/labels{/name}","comments_url":"https://api.github.com/repos/RadeonOpenCompute/ROCm/issues/195/comments","events_url":"https://api.github.com/repos/RadeonOpenCompute/ROCm/issues/195/events","html_url":"https://github.com/RadeonOpenCompute/ROCm/issues/195","id":255040909,"node_id":"MDU6SXNzdWUyNTUwNDA5MDk=","number":195,"title":"OpenCL Kernels hang in uninterruptible sleep, same for 'clinfo'","user":{"login":"PhilippSchaad","id":9193712,"node_id":"MDQ6VXNlcjkxOTM3MTI=","avatar_url":"https://avatars3.githubusercontent.com/u/9193712?v=4","gravatar_id":"","url":"https://api.github.com/users/PhilippSchaad","html_url":"https://github.com/PhilippSchaad","followers_url":"https://api.github.com/users/PhilippSchaad/followers","following_url":"https://api.github.com/users/PhilippSchaad/following{/other_user}","gists_url":"https://api.github.com/users/PhilippSchaad/gists{/gist_id}","starred_url":"https://api.github.com/users/PhilippSchaad/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/PhilippSchaad/subscriptions","organizations_url":"https://api.github.com/users/PhilippSchaad/orgs","repos_url":"https://api.github.com/users/PhilippSchaad/repos","events_url":"https://api.github.com/users/PhilippSchaad/events{/privacy}","received_events_url":"https://api.github.com/users/PhilippSchaad/received_events","type":"User","site_admin":false},"labels":[{"id":682030524,"node_id":"MDU6TGFiZWw2ODIwMzA1MjQ=","url":"https://api.github.com/repos/RadeonOpenCompute/ROCm/labels/Base%20AMDGPU%20Driver%20-KGD%20issue","name":"Base AMDGPU Driver -KGD issue","color":"d93f0b","default":false}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":14,"created_at":"2017-09-04T13:21:33Z","updated_at":"2018-06-03T14:48:30Z","closed_at":"2018-06-03T14:48:30Z","author_association":"NONE","body":"Executing OpenCL kernels (generated with LLVM's AMDGPU backend, exactly according to documentation) leads to the program waiting in uninterruptible sleep forever.\r\nSo far I have been able to observe that it usually works 2-3 times, but after that, the hanging starts to appear. `clinfo` always works, but after the hanging appears, `clinfo` starts to hang in uninterruptible sleep too.\r\nWith `ps -eo comm,wchan:32` I have been able to identify:\r\n  - `clinfo` hangs at call `amd_sched_entity_fini`\r\n  - the first executable that hangs, stops at call `kfd_process_notifier_release`\r\n  - all programs after that halt at `kfd_create_process`\r\n\r\nThe GPU used is an R9 Nano (Fiji), running the latest ROCm package (clean install) from the repositories (Ubuntu 16.04)."}}
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