Hi Marco, On Apr 1 17:11, marco atzeri wrote: > I am building and testing openmpi-1.7.0rc9 on > CYGWIN_NT-6.1 1.7.18(0.263/5/3) 2013-03-28 22:07 x86_64 Cygwin > every looks fine except when all the processes on several cores > end and should return to lunching program, something go wrong > (of course on 32bit everyhing is OK) > > Attached stackdump.
Not all 64 bit issues are Cygwin's fault. It's not clear in your case, but it is pretty clear that this happens in a DLL other than the Cygwin DLL. Look at the stack trace: > Stack trace: > Frame Function Args > 0000022A630 00488F23380 (004CCD00004, 0060008C820, 00600082970, 0000022CCF0) > 00600012500 00488F1C48C (00000000000, 0000022AB10, 00180134344, 00000000000) > 0000022A900 0010040234B (0000022AB10, 00000000000, 00000000000, 0000022AB80) > 0000022AAC0 001004010F3 (0000022AB10, 00000000000, 00000000030, > 30001000000FF00) > 0000022AB80 001800478A7 (00000000000, 00000000000, 00000000000, 00000000000) > 00000000000 0018004576B (00000000000, 00000000000, 00000000000, 00000000000) > 00000000000 0018004592F (00000000000, 00000000000, 00000000000, 00000000000) > 00000000000 00100407CB1 (00000000000, 00000000000, 00000000000, 00000000000) > 00000000000 00100401010 (00000000000, 00000000000, 00000000000, 00000000000) > 00000000000 0007710652D (00000000000, 00000000000, 00000000000, 00077189300) > 00000000000 0007733C521 (00000000000, 00000000000, 00000000000, 00077189300) > End of stack trace The function addresses starting with 0x4 are distro DLLs. So the crash occurs in a DLL at address 0x4:88F23380. The easiest way to find out which DLL is the culprit, is this: Call `rebase -i /bin/*.dll' and see which DLL covers the 0x4:88Fxxxxx addresses. The next addresses on the stack are applicaton addresses (0x1:0xxxxxxx) The Cygwin DLL itself only shows up in the 6th frame (0x1:8xxxxxxx). This is apparently the DLL entry point which ultimately calls the application's main function. Did you see my mail describing the memory layout on the cygwin-developers list? This is a bit helpful I hope: http://cygwin.com/ml/cygwin-developers/2013-02/msg00027.html Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
