Package: openmpi-common
Version: 1.6.5-6
Severity: normal
When checking the simple test program:
#include "mpi.h"
int main()
{
MPI_Init(0, 0);
MPI_Finalize();
return 0;
}
with valgrind, it returns the following memory leak information :
$ mpiexec -n 1 valgrind --suppressions=/usr/share/openmpi/openmpi-valgrind.supp
./openmpi_valgrind.elf
==21325== Memcheck, a memory error detector
==21325== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==21325== Using Valgrind-3.9.0 and LibVEX; rerun with -h for copyright info
==21325== Command: ./openmpi_valgrind.elf
==21325==
==21325== Syscall param writev(vector[...]) points to uninitialised byte(s)
==21325== at 0x6332937: writev (writev.c:50)
==21325== by 0x8851312: mca_oob_tcp_msg_send_handler (in
/usr/lib/openmpi/lib/openmpi/mca_oob_tcp.so)
==21325== by 0x88524D5: mca_oob_tcp_peer_send (in
/usr/lib/openmpi/lib/openmpi/mca_oob_tcp.so)
==21325== by 0x8856335: mca_oob_tcp_send_nb (in
/usr/lib/openmpi/lib/openmpi/mca_oob_tcp.so)
==21325== by 0x8645E2E: orte_rml_oob_send (in
/usr/lib/openmpi/lib/openmpi/mca_rml_oob.so)
==21325== by 0x8646453: orte_rml_oob_send_buffer (in
/usr/lib/openmpi/lib/openmpi/mca_rml_oob.so)
==21325== by 0x8C62A5E: ??? (in
/usr/lib/openmpi/lib/openmpi/mca_grpcomm_bad.so)
==21325== by 0x50B0A6E: ompi_mpi_init (in
/usr/lib/openmpi/lib/libmpi.so.1.0.8)
==21325== by 0x50C7B57: PMPI_Init (in /usr/lib/openmpi/lib/libmpi.so.1.0.8)
==21325== by 0x408E2F: main (openmpi_valgrind.cpp:5)
==21325== Address 0x71adbb1 is 161 bytes inside a block of size 256 alloc'd
==21325== at 0x4C2B7EE: realloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==21325== by 0x5137CB9: opal_dss_buffer_extend (in
/usr/lib/openmpi/lib/libmpi.so.1.0.8)
==21325== by 0x513806D: opal_dss_copy_payload (in
/usr/lib/openmpi/lib/libmpi.so.1.0.8)
==21325== by 0x5114DBD: orte_grpcomm_base_pack_modex_entries (in
/usr/lib/openmpi/lib/libmpi.so.1.0.8)
==21325== by 0x8C6293F: ??? (in
/usr/lib/openmpi/lib/openmpi/mca_grpcomm_bad.so)
==21325== by 0x50B0A6E: ompi_mpi_init (in
/usr/lib/openmpi/lib/libmpi.so.1.0.8)
==21325== by 0x50C7B57: PMPI_Init (in /usr/lib/openmpi/lib/libmpi.so.1.0.8)
==21325== by 0x408E2F: main (openmpi_valgrind.cpp:5)
==21325==
==21325==
==21325== HEAP SUMMARY:
==21325== in use at exit: 178,754 bytes in 597 blocks
==21325== total heap usage: 6,838 allocs, 6,241 frees, 13,022,326 bytes
allocated
==21325==
==21325== LEAK SUMMARY:
==21325== definitely lost: 42,952 bytes in 54 blocks
==21325== indirectly lost: 10,977 bytes in 21 blocks
==21325== possibly lost: 0 bytes in 0 blocks
==21325== still reachable: 124,825 bytes in 522 blocks
==21325== suppressed: 0 bytes in 0 blocks
==21325== Rerun with --leak-check=full to see details of leaked memory
==21325==
==21325== For counts of detected and suppressed errors, rerun with: -v
==21325== Use --track-origins=yes to see where uninitialised values come from
==21325== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 2 from 2)
So either there are memory leaks in OpenMPI that are triggered by that test
program, or the
OpenMPI Valgrind suppression file /usr/share/openmpi/openmpi-valgrind.supp is
not complete.
Upstream, I see that openmpi-valgrind.supp is different between 1.6.5 and
trunk, so perhaps it would
be possible to get a patched openmpi-valgrind.supp in the Debian OpenMPI
package so that valgrind
stops complaining?
The newest one seems to be:
https://svn.open-mpi.org/source/xref/ompi-trunk/contrib/openmpi-valgrind.supp
but my valgrind does not seem happy with that file:
==21821== FATAL: in suppressions file "./openmpi-valgrind.supp" near line 95:
==21821== bad or missing extra suppression info
==21821== exiting now.
Best regards
Torquil Sørensen
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