How would be the command line to compile with the option -g ? What debugger can I use? Thanks
Enviado desde mi iPad > El 15/04/2014, a las 18:20, "Gus Correa" <g...@ldeo.columbia.edu> escribió: > > Or just compiling with -g or -traceback (depending on the compiler) will > give you more information about the point of failure > in the error message. > >> On 04/15/2014 04:25 PM, Ralph Castain wrote: >> Have you tried using a debugger to look at the resulting core file? It >> will probably point you right at the problem. Most likely a case of >> overrunning some array when #temps > 5 >> >> >> >> >> On Tue, Apr 15, 2014 at 10:46 AM, Oscar Mojica <o_moji...@hotmail.com >> <mailto:o_moji...@hotmail.com>> wrote: >> >> Hello everybody >> >> I implemented a parallel simulated annealing algorithm in fortran. >> The algorithm is describes as follows >> >> 1. The MPI program initially generates P processes that have rank >> 0,1,...,P-1. >> 2. The MPI program generates a starting point and sends it for all >> processes set T=T0 >> 3. At the current temperature T, each process begins to execute >> iterative operations >> 4. At end of iterations, process with rank 0 is responsible for >> collecting the solution obatined by >> 5. Each process at current temperature and broadcast the best >> solution of them among all participating >> process >> 6. Each process cools the temperatue and goes back to step 3, until >> the maximum number of temperatures >> is reach >> >> I compiled with: mpif90 -o exe mpivfsa_version2.f >> and run with: mpirun -np 4 ./exe in a single machine >> >> So I have 4 processes, 1 iteration per temperature and for example >> 15 temperatures. When I run the program >> with just 5 temperatures it works well, but when the number of >> temperatures is higher than 5 it doesn't write the >> ouput files and I get the following error message: >> >> >> [oscar-Vostro-3550:06740] *** Process received signal *** >> [oscar-Vostro-3550:06741] *** Process received signal *** >> [oscar-Vostro-3550:06741] Signal: Segmentation fault (11) >> [oscar-Vostro-3550:06741] Signal code: Address not mapped (1) >> [oscar-Vostro-3550:06741] Failing at address: 0xad6af >> [oscar-Vostro-3550:06742] *** Process received signal *** >> [oscar-Vostro-3550:06740] Signal: Segmentation fault (11) >> [oscar-Vostro-3550:06740] Signal code: Address not mapped (1) >> [oscar-Vostro-3550:06740] Failing at address: 0xad6af >> [oscar-Vostro-3550:06742] Signal: Segmentation fault (11) >> [oscar-Vostro-3550:06742] Signal code: Address not mapped (1) >> [oscar-Vostro-3550:06742] Failing at address: 0xad6af >> [oscar-Vostro-3550:06740] [ 0] >> /lib/x86_64-linux-gnu/libc.so.6(+0x364a0) [0x7f49ee2224a0] >> [oscar-Vostro-3550:06740] [ 1] >> /lib/x86_64-linux-gnu/libc.so.6(cfree+0x1c) [0x7f49ee26f54c] >> [oscar-Vostro-3550:06740] [ 2] ./exe() [0x406742] >> [oscar-Vostro-3550:06740] [ 3] ./exe(main+0x34) [0x406ac9] >> [oscar-Vostro-3550:06740] [ 4] >> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f49ee20d76d] >> [oscar-Vostro-3550:06742] [ 0] >> /lib/x86_64-linux-gnu/libc.so.6(+0x364a0) [0x7f6877fdc4a0] >> [oscar-Vostro-3550:06742] [ 1] >> /lib/x86_64-linux-gnu/libc.so.6(cfree+0x1c) [0x7f687802954c] >> [oscar-Vostro-3550:06742] [ 2] ./exe() [0x406742] >> [oscar-Vostro-3550:06742] [ 3] ./exe(main+0x34) [0x406ac9] >> [oscar-Vostro-3550:06742] [ 4] >> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f6877fc776d] >> [oscar-Vostro-3550:06742] [ 5] ./exe() [0x401399] >> [oscar-Vostro-3550:06742] *** End of error message *** >> [oscar-Vostro-3550:06740] [ 5] ./exe() [0x401399] >> [oscar-Vostro-3550:06740] *** End of error message *** >> [oscar-Vostro-3550:06741] [ 0] >> /lib/x86_64-linux-gnu/libc.so.6(+0x364a0) [0x7fa6c4c6e4a0] >> [oscar-Vostro-3550:06741] [ 1] >> /lib/x86_64-linux-gnu/libc.so.6(cfree+0x1c) [0x7fa6c4cbb54c] >> [oscar-Vostro-3550:06741] [ 2] ./exe() [0x406742] >> [oscar-Vostro-3550:06741] [ 3] ./exe(main+0x34) [0x406ac9] >> [oscar-Vostro-3550:06741] [ 4] >> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7fa6c4c5976d] >> [oscar-Vostro-3550:06741] [ 5] ./exe() [0x401399] >> [oscar-Vostro-3550:06741] *** End of error message *** >> -------------------------------------------------------------------------- >> mpirun noticed that process rank 0 with PID 6917 on node >> oscar-Vostro-3550 exited on signal 11 (Segmentation fault). >> -------------------------------------------------------------------------- >> 2 total processes killed (some possibly by mpirun during cleanup) >> >> If there is a segmentation fault in no case it must work . >> I checked the program and didn't find the error. Why does the >> program work with five temperatures? >> Could someone help me to find the error and answer my question please. >> >> The program and the necessary files to run it are attached >> >> Thanks >> >> >> _Oscar Fabian Mojica Ladino_ >> Geologist M.S. in Geophysics >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org <mailto:us...@open-mpi.org> >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> >> >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
