On 04/09/2015 09:06 AM, Patrick Begou wrote:
Hi,
I'm working on a large parallel fortran application which give
(sometime) a segfault. When this error occurs I would like to
backtrace the call stack to know where it takes place but I'm unable
to get this information, no more than a list of memory addresses. I've
build a small test-case (with an error in array dimension creating a
segmentation fault in a subroutine ) to investigate gfortran/gcc options.
Sometimes I'm debugging MPICH/C++ programs old style.
In C++ you can attach output files e.g. to stdout, with
std::cout.rdbuf(...).
So each MPI Process gets a separate file.
vimdiff can open multiple files and compare them side by side.
Another useful tool from MPICH is jumpshot for visualizing the MPI calls.
-A.
