[mpich-discuss] mpich memory leak?

[Jed Brown]

On Fri, Jun 8, 2012 at 3:11 PM, Dave Goodell <goodell at mcs.anl.gov> wrote:

> > ==29174== 15 bytes in 1 blocks are still reachable in loss record 1 of 1
> > ==29174==    at 0x4C274A8: malloc (vg_replace_malloc.c:236)
> > ==29174==    by 0x410927: ??? (in /usr/bin/mpiexec.hydra)
> > ==29174==    by 0x40205A: ??? (in /usr/bin/mpiexec.hydra)
> > ==29174==    by 0x548AC4C: (below main) (libc-start.c:226)
>
> This stack trace indicates that there is a small leak (possibly harmless)
> in libc, not in any of the actual hydra (mpiexec) code.


Isn't this pointing to a static constructor?

FWIW, I get the following, though it's almost certainly harmless.

==17609== 131,120 bytes in 2 blocks are still reachable in loss record 1 of
1
==17609==    at 0x4C2B8A4: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==17609==    by 0x41FC41: HYDU_sock_forward_stdio (in
/home/jed/usr/mpich-gcc/bin/mpiexec.hydra)
==17609==    by 0x42D62B: HYDT_bscu_stdio_cb (in
/home/jed/usr/mpich-gcc/bin/mpiexec.hydra)
==17609==    by 0x42ADE7: HYDT_dmxu_poll_wait_for_event (in
/home/jed/usr/mpich-gcc/bin/mpiexec.hydra)
==17609==    by 0x40AE98: HYD_pmci_wait_for_completion (in
/home/jed/usr/mpich-gcc/bin/mpiexec.hydra)
==17609==    by 0x40431E: main (in
/home/jed/usr/mpich-gcc/bin/mpiexec.hydra)
==17609==
==17609== LEAK SUMMARY:
==17609==    definitely lost: 0 bytes in 0 blocks
==17609==    indirectly lost: 0 bytes in 0 blocks
==17609==      possibly lost: 0 bytes in 0 blocks
==17609==    still reachable: 131,120 bytes in 2 blocks
==17609==         suppressed: 0 bytes in 0 blocks
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