I am a newbie in openmpi. I have just compiled a program with -g -pg (an mpi program with a listener thread, which all MPI calls except initialization and MPI_Finalize are placed within) and I run it. However it crashes and I can't find any core dump, even I set the core dump max size to 100000 by
ulimit -c 100000 Signal:11 info.si_errno:0(Success) si_code:1(SEGV_MAPERR) Failing at addr:(nil) [0] func:raytrace [0x8185581] [1] func:[0xffffe440] [2] func:raytrace [0x8056736] [3] func:/lib/tls/libpthread.so.0 [0x40063b63] [4] func:/lib/tls/libc.so.6(__clone+0x5a) [0x4014618a] *** End of error message *** I tried to use gdb and I ran: gdb mpirun run --hostfile ../hostfile n 16 raytrace -finputs/car.env when I type backtrace after it crashes, it just said "no stack" I really want to find out what lines in what function are responsible for the crash. What can I do to find out the culprit?
