{"action":"created","issue":{"url":"https://api.github.com/repos/facebookincubator/gloo/issues/71","repository_url":"https://api.github.com/repos/facebookincubator/gloo","labels_url":"https://api.github.com/repos/facebookincubator/gloo/issues/71/labels{/name}","comments_url":"https://api.github.com/repos/facebookincubator/gloo/issues/71/comments","events_url":"https://api.github.com/repos/facebookincubator/gloo/issues/71/events","html_url":"https://github.com/facebookincubator/gloo/issues/71","id":249342783,"number":71,"title":"how to obtain communication time","user":{"login":"githubgsq","id":23164715,"avatar_url":"https://avatars3.githubusercontent.com/u/23164715?v=4","gravatar_id":"","url":"https://api.github.com/users/githubgsq","html_url":"https://github.com/githubgsq","followers_url":"https://api.github.com/users/githubgsq/followers","following_url":"https://api.github.com/users/githubgsq/following{/other_user}","gists_url":"https://api.github.com/users/githubgsq/gists{/gist_id}","starred_url":"https://api.github.com/users/githubgsq/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/githubgsq/subscriptions","organizations_url":"https://api.github.com/users/githubgsq/orgs","repos_url":"https://api.github.com/users/githubgsq/repos","events_url":"https://api.github.com/users/githubgsq/events{/privacy}","received_events_url":"https://api.github.com/users/githubgsq/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-08-10T13:16:31Z","updated_at":"2017-08-10T13:28:15Z","closed_at":null,"body":"hi, @pietern how to count communication time when program run with gloo on multiple nodes?\r\nwhat about nccl? \r\nIs there any method to seperate computation time from nccl communication time and communication time produced among different nodes please?"},"comment":{"url":"https://api.github.com/repos/facebookincubator/gloo/issues/comments/321550782","html_url":"https://github.com/facebookincubator/gloo/issues/71#issuecomment-321550782","issue_url":"https://api.github.com/repos/facebookincubator/gloo/issues/71","id":321550782,"user":{"login":"githubgsq","id":23164715,"avatar_url":"https://avatars3.githubusercontent.com/u/23164715?v=4","gravatar_id":"","url":"https://api.github.com/users/githubgsq","html_url":"https://github.com/githubgsq","followers_url":"https://api.github.com/users/githubgsq/followers","following_url":"https://api.github.com/users/githubgsq/following{/other_user}","gists_url":"https://api.github.com/users/githubgsq/gists{/gist_id}","starred_url":"https://api.github.com/users/githubgsq/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/githubgsq/subscriptions","organizations_url":"https://api.github.com/users/githubgsq/orgs","repos_url":"https://api.github.com/users/githubgsq/repos","events_url":"https://api.github.com/users/githubgsq/events{/privacy}","received_events_url":"https://api.github.com/users/githubgsq/received_events","type":"User","site_admin":false},"created_at":"2017-08-10T13:28:15Z","updated_at":"2017-08-10T13:28:15Z","body":"@pietern I run caffe2 on a single machine reasonably, but when it runs on multiple nodes, the speed is very slow. I'm not sure whether it is caused by gloo communication, then I think the problem may be analyzed  by comparing the communication time and computation time, but I don't how to test.\r\nI run caffe2 resnet50 example.\r\nIs there any advice please?"}}
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