[petsc-dev] TS error with optimimzied build

Mark Adams mfadams at lbl.gov
Thu Dec 15 16:56:03 CST 2016

I have a code that work on my Mac but it fails on both a Cray XC30 and a
KNL, unless the code is build with debug. I get this error message + -info
output. I am using -snes_monitor but get no output. This code was working
and I added a new feature. It does seem to fail when this new feature is

And, alas, I do not have a functioning valgrind right now.

I will start toggling optimization flags but any thoughts would be welcome.


[0] MatAssemblyEnd_SeqAIJ(): Matrix size: 4290 X 4290; storage space: 0
unneeded,132612 used
[0] MatAssemblyEnd_SeqAIJ(): Number of mallocs during MatSetValues() is 0
[0] MatAssemblyEnd_SeqAIJ(): Maximum nonzeros in any row is 50
[0] MatCheckCompressedRow(): Found the ratio (num_zerorows
0)/(num_localrows 4290) < 0.6. Do not use CompressedRow routines.
[0] PetscCommDuplicate(): Using internal PETSc communicator 1140850689
[0] DMGetDMKSP(): Creating new DMKSP
[0] TSAdaptCheckStage(): Step=0, nonlinear solve failures 1 greater than
current TS allowed, stopping solve
[0]PETSC ERROR: --------------------- Error Message
[0]PETSC ERROR: TSStep has failed due to DIVERGED_NONLINEAR_SOLVE, increase
-ts_max_snes_failures or make negative to attempt recovery
[0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for
trouble shooting.
[0]PETSC ERROR: Petsc Development GIT revision: unknown  GIT Date: unknown
[0]PETSC ERROR: /global/u2/m/madams/landaufem/Plex/./landaufem on a
arch-cori-knl-opt64-novector-intel named nid09355 by madams Thu Dec 15
14:25:00 2016
[0]PETSC ERROR: TSSolve failed
1 TS time steps, 512 cells, Nq=9 (4608 IPs), T=0.
Configure options COPTFLAGS="  -g -O1 -fp-model fast -qopt-report=5
-hcpu=mic-knl -no-simd" CXXOPTFLAGS="-g -O1 -fp-model fast -qopt-report=5
-hcpu=mic-knl -no-simd" FOPTFLAGS="  -g -O1 -fp-model fast -qopt-report=5
-hcpu=mic-knl -no-simd" --download-metis=1 --download-parmetis=1
--with-cc=mpiicc --with-cxx=mpiicpc --with-debugging=0 --with-fc=mpiifort
--with-mpiexec=srun --with-batch=0 --with-memalign=64 --with-64-bit-indices
PETSC_ARCH=arch-cori-knl-opt64-novector-intel --with-openmp=0
[0]PETSC ERROR: #1 TSStep() line 3972 in
[0]PETSC ERROR: #2 TSSolve() line 4218 in
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