{"action":"created","issue":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/18477","repository_url":"https://api.github.com/repos/JuliaLang/julia","labels_url":"https://api.github.com/repos/JuliaLang/julia/issues/18477/labels{/name}","comments_url":"https://api.github.com/repos/JuliaLang/julia/issues/18477/comments","events_url":"https://api.github.com/repos/JuliaLang/julia/issues/18477/events","html_url":"https://github.com/JuliaLang/julia/issues/18477","id":176636075,"number":18477,"title":"julia-rc3 & rc4 binary segfault with enough processes","user":{"login":"mauro3","id":4098145,"avatar_url":"https://avatars.githubusercontent.com/u/4098145?v=3","gravatar_id":"","url":"https://api.github.com/users/mauro3","html_url":"https://github.com/mauro3","followers_url":"https://api.github.com/users/mauro3/followers","following_url":"https://api.github.com/users/mauro3/following{/other_user}","gists_url":"https://api.github.com/users/mauro3/gists{/gist_id}","starred_url":"https://api.github.com/users/mauro3/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mauro3/subscriptions","organizations_url":"https://api.github.com/users/mauro3/orgs","repos_url":"https://api.github.com/users/mauro3/repos","events_url":"https://api.github.com/users/mauro3/events{/privacy}","received_events_url":"https://api.github.com/users/mauro3/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":{"url":"https://api.github.com/repos/JuliaLang/julia/milestones/21","html_url":"https://github.com/JuliaLang/julia/milestones/0.5.x","labels_url":"https://api.github.com/repos/JuliaLang/julia/milestones/21/labels","id":1298030,"number":21,"title":"0.5.x","description":"Bugs to fix in the 0.5.x timeframe.","creator":{"login":"JeffBezanson","id":744556,"avatar_url":"https://avatars.githubusercontent.com/u/744556?v=3","gravatar_id":"","url":"https://api.github.com/users/JeffBezanson","html_url":"https://github.com/JeffBezanson","followers_url":"https://api.github.com/users/JeffBezanson/followers","following_url":"https://api.github.com/users/JeffBezanson/following{/other_user}","gists_url":"https://api.github.com/users/JeffBezanson/gists{/gist_id}","starred_url":"https://api.github.com/users/JeffBezanson/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JeffBezanson/subscriptions","organizations_url":"https://api.github.com/users/JeffBezanson/orgs","repos_url":"https://api.github.com/users/JeffBezanson/repos","events_url":"https://api.github.com/users/JeffBezanson/events{/privacy}","received_events_url":"https://api.github.com/users/JeffBezanson/received_events","type":"User","site_admin":false},"open_issues":77,"closed_issues":68,"state":"open","created_at":"2015-09-09T16:38:11Z","updated_at":"2016-09-13T14:23:13Z","due_on":"2016-10-31T00:00:00Z","closed_at":null},"comments":11,"created_at":"2016-09-13T13:10:32Z","updated_at":"2016-09-13T17:19:20Z","closed_at":null,"body":"On a linux machine with AMD processor the binaries of 0.5-rc3 & rc4 both segfault on startup:\r\n```\r\n~/julia/julia-0.5-rc4-bin/julia-9c76c3e89a/bin $ ./julia\r\nzsh: segmentation fault (core dumped)  ./julia\r\n\r\n~/julia/julia-0.5-rc4-bin/julia-9c76c3e89a/bin $ uname -a\r\nLinux ... 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1 (2016-07-04) x86_64 GNU/Linux\r\n\r\n~/julia/julia-0.5-rc4-bin/julia-9c76c3e89a/bin $ cat /proc/cpuinfo \r\nprocessor       : 0\r\nvendor_id       : AuthenticAMD\r\ncpu family      : 16\r\nmodel           : 2\r\nmodel name      : Quad-Core AMD Opteron(tm) Processor 2356\r\nstepping        : 3\r\nmicrocode       : 0x1000095\r\ncpu MHz         : 2300.000\r\ncache size      : 512 KB\r\nphysical id     : 0\r\nsiblings        : 4\r\ncore id         : 0\r\ncpu cores       : 4\r\napicid          : 0\r\ninitial apicid  : 0\r\nfpu             : yes\r\nfpu_exception   : yes\r\ncpuid level     : 5\r\nwp              : yes\r\nflags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1\r\ngb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm ss\r\ne4a misalignsse 3dnowprefetch osvw ibs hw_pstate npt lbrv svm_lock vmmcall\r\nbogomips        : 4600.53\r\nTLB size        : 1024 4K pages\r\nclflush size    : 64\r\ncache_alignment : 64\r\naddress sizes   : 48 bits physical, 48 bits virtual\r\npower management: ts ttp tm stc 100mhzsteps hwpstate\r\n```\r\n\r\nOn a different machine with a Intel CPU (sharing the file system) the same binary starts and tests work in serial (but not in parallel, but that is probably a different issue). (**Edit**: actually not true, see below).\r\n\r\nAlso, I'm currently building from source but also only the serial tests run.  (Note for the 0.4 build I had to https://github.com/JuliaLang/julia/issues/10390#issuecomment-130734365, other than that 0.4 worked fine)"},"comment":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/comments/246755855","html_url":"https://github.com/JuliaLang/julia/issues/18477#issuecomment-246755855","issue_url":"https://api.github.com/repos/JuliaLang/julia/issues/18477","id":246755855,"user":{"login":"mauro3","id":4098145,"avatar_url":"https://avatars.githubusercontent.com/u/4098145?v=3","gravatar_id":"","url":"https://api.github.com/users/mauro3","html_url":"https://github.com/mauro3","followers_url":"https://api.github.com/users/mauro3/followers","following_url":"https://api.github.com/users/mauro3/following{/other_user}","gists_url":"https://api.github.com/users/mauro3/gists{/gist_id}","starred_url":"https://api.github.com/users/mauro3/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mauro3/subscriptions","organizations_url":"https://api.github.com/users/mauro3/orgs","repos_url":"https://api.github.com/users/mauro3/repos","events_url":"https://api.github.com/users/mauro3/events{/privacy}","received_events_url":"https://api.github.com/users/mauro3/received_events","type":"User","site_admin":false},"created_at":"2016-09-13T17:19:20Z","updated_at":"2016-09-13T17:19:20Z","body":"For 0.4 I used `#define REGION_PG_COUNT 8*4096`, i.e. 16x smaller than the default.  I'll set and build from source and report back."}}
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