Hi Mark, Is your application threaded? I seem to recall having seen these "Logging event had unbalanced begin/end pairs" with threaded codes that call PETSc.
--Richard On Wed, Mar 8, 2017 at 1:33 PM, Mark Adams <[email protected]> wrote: > Our code is having scaling problems on KNL (Cori), when we get up to > about 1K sockets. > > We have isolated the problem to a certain VecScatter. This code stores > the data redundantly. Scattering into the solver is just a local copy, > but scattering out requires that each process send all of its data to > every other process. It is this second one that is not scaling well. > > I wish I had more data, but this is urgent, jobs are in the queue, but > this is all I have. Any recommendation for parameters that we might > test while we get more data? > > Also, we got this error with -log_view. > > I've updated their PETSc with maint and we are waiting for it to run > again. Apparently this was not on the first time step, so the code > seems to have run for a while with what looks to me like a logic bug. > > Thanks, > Mark > > > [4098]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > [4098]PETSC ERROR: Object is in wrong state > [4098]PETSC ERROR: Logging event had unbalanced begin/end pairs > [4098]PETSC ERROR: See > http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble > shooting. > [4098]PETSC ERROR: Petsc Release Version 3.6.3, unknown > [4098]PETSC ERROR: /global/cscratch1/sd/worleyph/XGC1_KNL/xgc2 on a > v3.6.3-arch-knl-opt64-intel named nid05668 by worleyph Mon Mar 6 > 11:33:19 2017 > [4098]PETSC ERROR: Configure options COPTFLAGS="-g -O3 -fp-model fast > -xMIC-AVX512 -DX2_HAVE_INTEL" CXXOPTFLAGS="-g -O3 -fp-model fast > -xMIC-AVX512\ > -DX2_HAVE_INTEL" FOPTFLAGS="-g -O3 -fp-model fast -xMIC-AVX512 > -DX2_HAVE_INTEL" --download-metis=1 --download-parmetis=1 > --with-blas-lapack-dir=/g\ > lobal/common/cori/software/intel/compilers_and_libraries_ > 2017.0.098/linux/mkl > --with-cc=cc --with-cxx=cc --with-debugging=0 --with-fc=ftn --with-mp\ > iexec=srun --with-batch=0 --with-memalign=64 --with-64-bit-indices > --known-mpi-shared-libraries=1 PETSC_ARCH=v3.6.3-arch-knl-opt64-intel > --with-ope\ > nmp=1 PETSC_DIR=/global/homes/t/tkoskela/git/petsc > [4098]PETSC ERROR: #1 PetscLogEventEndDefault() line 696 in > /global/u2/t/tkoskela/git/petsc/src/sys/logging/utils/eventlog.c > [4098]PETSC ERROR: #2 VecSet() line 577 in > /global/u2/t/tkoskela/git/petsc/src/vec/vec/interface/rvector.c > [4098]PETSC ERROR: #3 VecCreate_Seq() line 44 in > /global/u2/t/tkoskela/git/petsc/src/vec/vec/impls/seq/bvec3.c > [4098]PETSC ERROR: #4 VecSetType() line 53 in > /global/u2/t/tkoskela/git/petsc/src/vec/vec/interface/vecreg.c > [4098]PETSC ERROR: #5 VecDuplicate_Seq() line 786 in > /global/u2/t/tkoskela/git/petsc/src/vec/vec/impls/seq/bvec2.c > [4098]PETSC ERROR: #6 VecDuplicate() line 399 in > /global/u2/t/tkoskela/git/petsc/src/vec/vec/interface/vector.c > [4098]PETSC ERROR: #7 VecDuplicateVecs_Default() line 840 in > /global/u2/t/tkoskela/git/petsc/src/vec/vec/interface/vector.c > [4098]PETSC ERROR: #8 VecDuplicateVecs() line 473 in > /global/u2/t/tkoskela/git/petsc/src/vec/vec/interface/vector.c >
