Hi Antonio, right now, a runnable example is or full CP2K program, freely available at cp2k.org, but not very practical as a testcase. It seems to happen at any point where we call: CALL mpi_comm_compare ( comm1, comm2, iout, ierr ) I'll see if I can reproduce it running something from the test directory. Joost ________________________________________ From: [email protected] [[email protected]] on behalf of "Antonio J. Peña" [[email protected]] Sent: Monday, April 28, 2014 6:26 PM To: [email protected] Subject: Re: [mpich-discuss] Memory leak comparing communicators Hi Joost, Can you share the smallest fragment of code with which we can reproduce this? Antonio On 04/28/2014 11:25 AM, VandeVondele Joost wrote:
Hi,
using mpich 3.1 I notice that my application leaks memory. Compiling it with '-O1 -g -fno-omit-frame-pointer -fsanitize=leak' using gcc 4.9 it appears the sources is comparing communicators, for example:
[0] Direct leak of 38400 byte(s) in 600 object(s) allocated from: [0] #0 0x7f84298d53a8 in __interceptor_malloc ../../../../gcc/libsanitizer/lsan/lsan_interceptors.cc:66 [0] #1 0x7f842aabaf6b in MPIR_Group_create /data/vjoost/mpich-3.1/src/mpi/group/grouputil.c:77 [0] #2 0x7f842ab88314 in MPIR_Comm_group_impl /data/vjoost/mpich-3.1/src/mpi/comm/comm_group.c:44 [0] #3 0x7f842ab840d3 in PMPI_Comm_compare /data/vjoost/mpich-3.1/src/mpi/comm/comm_compare.c:122 [0] #4 0x7f842aac8e84 in pmpi_comm_compare_ /data/vjoost/mpich-3.1/src/binding/f77/comm_comparef.c:267 [0] #5 0x1bfd447 in __message_passing_MOD_mp_comm_compare /data/vjoost/clean/cp2k/cp2k/src/common/message_passing.F:1084
I'm not seeing other leaks, so is guess something particular is going on here. Any suggestions on a possible fix ?
Thanks,
Joost _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss
-- Antonio J. Peña Postdoctoral Appointee Mathematics and Computer Science Division Argonne National Laboratory 9700 South Cass Avenue, Bldg. 240, Of. 3148 Argonne, IL 60439-4847 [email protected] www.mcs.anl.gov/~apenya _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss