[petsc-dev] Are we suppressing stderr when comparing outputs of tests?

[Stefano Zampini]

I have a test that fails, but it only prints a small amount of information

[szampini at localhost petsc]$ make -f gmakefile.test test search='ksp%'
searchin='ex75_2_icc' PETSC_ARCH=arch-opt
Using MAKEFLAGS: -- PETSC_ARCH=arch-opt searchin=ex75_2_icc search=ksp%
        TEST arch-opt/tests/counts/ksp_ksp_tutorials-ex75_2_icc.counts
 ok ksp_ksp_tutorials-ex75_2_icc+reset-false
not ok diff-ksp_ksp_tutorials-ex75_2_icc+reset-false # Error code: 1
# 3c3
# < Linear solve converged due to CONVERGED_RTOL iterations 34
# ---
# > Linear solve did not converge due to DIVERGED_ITS iterations 1000
 ok ksp_ksp_tutorials-ex75_2_icc+reset-true
 ok diff-ksp_ksp_tutorials-ex75_2_icc+reset-true

If I run the test that fails myself, I get PETSC_ERROR messages

[szampini at localhost tutorials]$ ./ex75 -nmat 3 -pc_type icc
-ksp_converged_reason -ksp_type hpddm -ksp_max_it 1000 -ksp_gmres_restart
40 -ksp_rtol 1e-10 -ksp_hpddm_type gcrodr -ksp_hpddm_recycle 20 -reset
false -load_dir ${DATAFILESPATH}/matrices/hpddm/GCRODR
Linear solve converged due to CONVERGED_RTOL iterations 94
Linear solve converged due to CONVERGED_RTOL iterations 37
[0]PETSC ERROR: --------------------- Error Message
--------------------------------------------------------------
[0]PETSC ERROR: Operation done in wrong order
[0]PETSC ERROR: Need to call MatDenseRestoreArray first
[0]PETSC ERROR: See https://www.mcs.anl.gov/petsc/documentation/faq.html
for trouble shooting.
[0]PETSC ERROR: Petsc Development GIT revision: v3.13.1-192-g23916988c6
 GIT Date: 2020-05-09 02:16:44 +0300
[0]PETSC ERROR: ./ex75 on a arch-debug named localhost.localdomain by
szampini Wed May 13 15:51:48 2020
[0]PETSC ERROR: Configure options
--DATAFILESPATH=/home/szampini/Devel/petscdatafiles --download-elemental
--download-chaco --download-ctetgen --download-exodusii --download-glvis
--download-hara --download-hara-commit=HEAD --download-hdf5
--download-hpddm --download-hpddm-commit=HEAD --download-hypre
--download-metis --download-mfem-commit=origin/master --download-mfem=1
--download-ml --download-mumps --download-netcdf --download-p4est
--download-parmetis --download-pnetcdf --download-ptscotch
--download-revolve --download-scalapack --download-slepc
--download-suitesparse --download-superlu --download-superlu_dist
--download-triangle --with-blaslapack-include=/usr/include/openblas
--with-cxx-dialect=C++11 --with-fortran-bindings=0 --with-opengl
--with-openmp --with-thrust-dir=/home/szampini/local --with-valgrind
--with-zlib CFLAGS="-Wall -g -O0" CXXFLAGS="-Wall -g -O0" FFLAGS="-g -O0"
PETSC_ARCH=arch-debug
[0]PETSC ERROR: #1 MatDensePlaceArray_SeqDense() line 1364 in
/home/szampini/Devel/petsc/src/mat/impls/dense/seq/dense.c
[0]PETSC ERROR: #2 MatDensePlaceArray() line 1900 in
/home/szampini/Devel/petsc/src/mat/impls/dense/mpi/mpidense.c
[0]PETSC ERROR: #3 GMV() line 128 in
/home/szampini/Devel/petsc/arch-debug/include/HPDDM_PETSc.hpp
[0]PETSC ERROR: --------------------- Error Message
--------------------------------------------------------------
[0]PETSC ERROR: Operation done in wrong order
[0]PETSC ERROR: Need to call MatDenseRestoreArray first
[0]PETSC ERROR: See https://www.mcs.anl.gov/petsc/documentation/faq.html
for trouble shooting.
[0]PETSC ERROR: Petsc Development GIT revision: v3.13.1-192-g23916988c6
 GIT Date: 2020-05-09 02:16:44 +0300
[0]PETSC ERROR: ./ex75 on a arch-debug named localhost.localdomain by
szampini Wed May 13 15:51:48 2020
[0]PETSC ERROR: Configure options
--DATAFILESPATH=/home/szampini/Devel/petscdatafiles --download-elemental
--download-chaco --download-ctetgen --download-exodusii --download-glvis
--download-hara --download-hara-commit=HEAD --download-hdf5
--download-hpddm --download-hpddm-commit=HEAD --download-hypre
--download-metis --download-mfem-commit=origin/master --download-mfem=1
--download-ml --download-mumps --download-netcdf --download-p4est
--download-parmetis --download-pnetcdf --download-ptscotch
--download-revolve --download-scalapack --download-slepc
--download-suitesparse --download-superlu --download-superlu_dist
--download-triangle --with-blaslapack-include=/usr/include/openblas
--with-cxx-dialect=C++11 --with-fortran-bindings=0 --with-opengl
--with-openmp --with-thrust-dir=/home/szampini/local --with-valgrind
--with-zlib CFLAGS="-Wall -g -O0" CXXFLAGS="-Wall -g -O0" FFLAGS="-g -O0"
PETSC_ARCH=arch-debug
[0]PETSC ERROR: #4 MatDensePlaceArray_SeqDense() line 1364 in
/home/szampini/Devel/petsc/src/mat/impls/dense/seq/dense.c
[0]PETSC ERROR: #5 MatDensePlaceArray() line 1900 in
/home/szampini/Devel/petsc/src/mat/impls/dense/mpi/mpidense.c
[0]PETSC ERROR: #6 apply() line 216 in
/home/szampini/Devel/petsc/arch-debug/include/HPDDM_PETSc.hpp
Linear solve did not converge due to DIVERGED_ITS iterations 1000

Why is that? are we suppressing stderr when comparing diffs?

-- 
Stefano
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