[petsc-users] Using -malloc_dump to examine memory leak

[Yuyun Yang via petsc-users]

Hello team,

I'm trying to use the options -malloc_dump and -malloc_debug to examine memory 
leaks. The messages however, are quite generic, and don't really tell me where 
the problems occur, for example:

[ 0]1520 bytes VecCreate() line 35 in 
/home/yyy910805/petsc/src/vec/vec/interface/veccreate.c
      [0]  PetscMallocA() line 35 in /home/yyy910805/petsc/src/sys/memory/mal.c
      [0]  VecCreate() line 30 in 
/home/yyy910805/petsc/src/vec/vec/interface/veccreate.c
      [0]  VecDuplicate_Seq() line 804 in 
/home/yyy910805/petsc/src/vec/vec/impls/seq/bvec2.c
      [0]  VecDuplicate() line 375 in 
/home/yyy910805/petsc/src/vec/vec/interface/vector.c

The code is huge, so going through every single VecCreate/VecDuplicate and 
VecDestroy is going to be time-consuming. Meanwhile, running valgrind gave me 
some uninitialized values errors that don't seem to be related to the above 
message (or maybe they are?).

How can I use this option to debug effectively?

Thanks a lot,
Yuyun