Based on my experiences, I would FULLY endorse (100% agree with) David Zhang. It is usually a coding or typo mistake.
At first, Ensure that array sizes and dimension are correct. I experience that if openmpi is compiled with gnu compilers (not with Intel) then it also point outs the subroutine exactly in which the fault occur. have a try. best, AA On Wed, Jun 30, 2010 at 12:43 PM, David Zhang <solarbik...@gmail.com> wrote: > When I got segmentation faults, it has always been my coding mistakes. > Perhaps your code is not robust against number of processes not divisible by > 2? > > On Wed, Jun 30, 2010 at 8:47 AM, Jack Bryan <dtustud...@hotmail.com>wrote: > >> Dear All, >> >> I am using Open MPI, I got the error: >> >> n337:37664] *** Process received signal *** >> [n337:37664] Signal: Segmentation fault (11) >> [n337:37664] Signal code: Address not mapped (1) >> [n337:37664] Failing at address: 0x7fffcfe90000 >> [n337:37664] [ 0] /lib64/libpthread.so.0 [0x3c50e0e4c0] >> [n337:37664] [ 1] >> /lustre/home/rhascheduler/RhaScheduler-0.4.1.1/mytest/nmn2 [0x414ed7] >> [n337:37664] [ 2] /lib64/libc.so.6(__libc_start_main+0xf4) [0x3c5021d974] >> [n337:37664] [ 3] >> /lustre/home/rhascheduler/RhaScheduler-0.4.1.1/mytest/nmn2(__gxx_personality_v0+0x1f1) >> [0x412139] >> [n337:37664] *** End of error message *** >> >> After searching answers, it seems that some functions fail. >> >> My program can run well for 1,2,10 processors, but fail when the number of >> tasks cannot >> be divided evenly by number of processes. >> >> Any help is appreciated. >> >> thanks >> >> Jack >> >> June 30 2010 >> >> >> ------------------------------ >> The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with >> Hotmail. Get >> busy.<http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_5> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > > > > -- > David Zhang > University of California, San Diego > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
