{"action":"created","issue":{"url":"https://api.github.com/repos/imglib/imglib2/issues/192","repository_url":"https://api.github.com/repos/imglib/imglib2","labels_url":"https://api.github.com/repos/imglib/imglib2/issues/192/labels{/name}","comments_url":"https://api.github.com/repos/imglib/imglib2/issues/192/comments","events_url":"https://api.github.com/repos/imglib/imglib2/issues/192/events","html_url":"https://github.com/imglib/imglib2/issues/192","id":278885651,"number":192,"title":"RealSumTest failure on MacbookPro 10,1 (Retina, Mid 2012)","user":{"login":"jni","id":492549,"avatar_url":"https://avatars3.githubusercontent.com/u/492549?v=4","gravatar_id":"","url":"https://api.github.com/users/jni","html_url":"https://github.com/jni","followers_url":"https://api.github.com/users/jni/followers","following_url":"https://api.github.com/users/jni/following{/other_user}","gists_url":"https://api.github.com/users/jni/gists{/gist_id}","starred_url":"https://api.github.com/users/jni/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jni/subscriptions","organizations_url":"https://api.github.com/users/jni/orgs","repos_url":"https://api.github.com/users/jni/repos","events_url":"https://api.github.com/users/jni/events{/privacy}","received_events_url":"https://api.github.com/users/jni/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-12-04T06:36:55Z","updated_at":"2017-12-04T13:37:59Z","closed_at":null,"author_association":"NONE","body":"When I run:\r\n\r\n```\r\ngit clone git@github.com:imglib/imglib2\r\ncd imglib2\r\nmvn clean install\r\n```\r\n\r\nOn my Macbook (2017), everything works fine, but on my Macbook Pro 10,1 (Retina, Mid 2012), I get a single test failure:\r\n\r\n```\r\nRunning net.imglib2.util.RealSumTest\r\nTests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.7 sec <<< FAILURE! - in net.imglib2.util.RealSumTest\r\ntestAdd(net.imglib2.util.RealSumTest)  Time elapsed: 0.016 sec  <<< FAILURE!\r\njava.lang.AssertionError: expected:<934464.0> but was:<1000000.0>\r\n\tat net.imglib2.util.RealSumTest.testAdd(RealSumTest.java:122)\r\n```\r\n\r\nGit commit is 8bc4372b741b195ba8a47819f9bc9f9673778f80\r\n\r\nBoth laptops are running macOS 10.13.1 High Sierra, so it might actually be processor-dependent."},"comment":{"url":"https://api.github.com/repos/imglib/imglib2/issues/comments/348964369","html_url":"https://github.com/imglib/imglib2/issues/192#issuecomment-348964369","issue_url":"https://api.github.com/repos/imglib/imglib2/issues/192","id":348964369,"user":{"login":"axtimwalde","id":385072,"avatar_url":"https://avatars0.githubusercontent.com/u/385072?v=4","gravatar_id":"","url":"https://api.github.com/users/axtimwalde","html_url":"https://github.com/axtimwalde","followers_url":"https://api.github.com/users/axtimwalde/followers","following_url":"https://api.github.com/users/axtimwalde/following{/other_user}","gists_url":"https://api.github.com/users/axtimwalde/gists{/gist_id}","starred_url":"https://api.github.com/users/axtimwalde/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/axtimwalde/subscriptions","organizations_url":"https://api.github.com/users/axtimwalde/orgs","repos_url":"https://api.github.com/users/axtimwalde/repos","events_url":"https://api.github.com/users/axtimwalde/events{/privacy}","received_events_url":"https://api.github.com/users/axtimwalde/received_events","type":"User","site_admin":false},"created_at":"2017-12-04T13:37:59Z","updated_at":"2017-12-04T13:37:59Z","author_association":"OWNER","body":"This error is not related to this commit.  `RealSum` does not work at the expected precision on this 2012 Mac which means that double precision means something less precise for this machine than for others which is surprising because both machines sport Intel processors---correct?  `RealSum` is meant to exceed double precision for large sequences of limited size numbers but uses double precision calculations internally.  You can skip the test with `mvn -DskipTests`.  Otherwise, this is a bug in the Java distribution for this MacOS version, not sure how relevant because on an old machine."}}
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