[petsc-users] Question about correctly catching fp_trap

[Sajid Ali]

Going by the advice given here : https://stackoverflow.com/a/2792735

I tried running the program, hoping to catch the FP exception and I got the
error I had before (which turned out to be due to an FP exception as per
previous petsc thread):

Missing separate debuginfos, use: debuginfo-install blas-3.4.2-8.el7.x86_64
bzip2-libs-1.0.6-13.el7.x86_64 elfutils-libelf-0.168-8.el7.x86_64
elfutils-libs-0.168-8.el7.x86_64 glibc-2.17-196.el7.x86_64
lapack-3.4.2-8.el7.x86_64 libattr-2.4.46-12.el7.x86_64
libcap-2.22-9.el7.x86_64 libgfortran-4.8.5-16.el7.x86_64
libxml2-2.9.1-6.el7_2.3.x86_64 systemd-libs-219-42.el7_4.4.x86_64
xz-libs-5.2.2-1.el7.x86_64 zlib-1.2.7-17.el7.x86_64
(gdb) run -ts_type cn
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Killed
[sajid at xrm free_space]$ Starting program:
/raid/home/sajid/packages/xwp_petsc/2d/free_space/./ex_modify -ts_type cn
[setting tty state failed in terminal_inferior: Input/output error]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
warning: File
"/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-4.8.5/gcc-7.3.0-qrjpi76aeo4bysagruwwfii6oneh56lj/lib64/libstdc++.
so.6.0.24-gdb.py" auto-loading has been declined by your `auto-load
safe-path' set to "$debugdir:$datadir/auto-load:/usr/bin/mono-gdb.py".
Solving a linear TS problem on 1 processor
mx : 512, my: 512 lambda : 1.239840e-10
[0]PETSC ERROR: --------------------- Error Message
--------------------------------------------------------------
[0]PETSC ERROR:
[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:
bd27d3f284687498e4c4678d234c0e308a5bc236  GIT Date: 2019-01-02 11:00:20
-0600
[0]PETSC ERROR:
/raid/home/sajid/packages/xwp_petsc/2d/free_space/./ex_modify on a  named
xrm by sajid Fri Jan  4 14:47:56 2019
[0]PETSC ERROR: Configure options
--prefix=/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/petsc-develop-2u6vuwagkoczyvnpsubzrubmtmpfhhkj
--with-ssl=0 --download-c2html=0 --download-sowing=0 --download-hwloc=0
CFLAGS= FFLAGS= CXXFLAGS= COPTFLAGS= FOPTFLAGS= CXXOPTFLAGS=
--with-cc=/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/mpich-3.3-z5uiwmx24jylnivuhlnqjjmm674ozj6x/bin/mpicc
--with-cxx=/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/mpich-3.3-z5uiwmx24jylnivuhlnqjjmm674ozj6x/bin/mpic++
--with-fc=/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/mpich-3.3-z5uiwmx24jylnivuhlnqjjmm674ozj6x/bin/mpif90
--with-precision=double --with-scalar-type=complex
--with-shared-libraries=1 --with-debugging=1 --with-64-bit-indices=0
--with-blaslapack-lib="/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/intel-mkl-2019.0.117-wzqlcijwx7odz2x5chembudo5leqpfh2/compilers_and_libraries_2019.0.117/linux/mkl/lib/intel64/libmkl_intel_lp64.so
/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/intel-mkl-2019.0.117-wzqlcijwx7odz2x5chembudo5leqpfh2/compilers_and_libraries_2019.0.117/linux/mkl/lib/intel64/libmkl_sequential.so
/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/intel-mkl-2019.0.117-wzqlcijwx7odz2x5chembudo5leqpfh2/compilers_and_libraries_2019.0.117/linux/mkl/lib/intel64/libmkl_core.so
/lib64/libpthread.so /lib64/libm.so /lib64/libdl.so" --with-x=1
--with-clanguage=C --with-scalapack=0 --with-metis=1
--with-metis-dir=/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/metis-5.1.0-nhgzn4kjskctzmzv35mstvd34nj2ugek
--with-hdf5=1
--with-hdf5-dir=/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/hdf5-1.10.4-ltstvsxvyjue2gxfegi4nvr6c5xg3zww
--with-hypre=0 --with-parmetis=1
--with-parmetis-dir=/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/parmetis-4.0.3-hw3j2ss7mjsc5x5f2gaflirnuufzptil
--with-mumps=0 --with-trilinos=0 --with-cxx-dialect=C++11
--with-superlu_dist-include=/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/superlu-dist-develop-cpspq4ca2hnyvhx4mz7zsupbj3do6md3/include
--with-superlu_dist-lib=/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/superlu-dist-develop-cpspq4ca2hnyvhx4mz7zsupbj3do6md3/lib/libsuperlu_dist.a
--with-superlu_dist=1 --with-suitesparse=0
--with-zlib-include=/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/zlib-1.2.11-ldu43taplg2nbkxtem346zq4ibhad64i/include
--with-zlib-lib="-L/raid/home/sajid/packages/spack/opt/spack/linux-rhel7-x86_64/gcc-7.3.0/zlib-1.2.11-ldu43taplg2nbkxtem346zq4ibhad64i/lib
-lz" --with-zlib=1
[0]PETSC ERROR: #1 TSStep() line 3673 in
/tmp/sajid/spack-stage/spack-stage-0boEG4/petsc/src/ts/interface/ts.c
[0]PETSC ERROR: #2 TSSolve() line 3847 in
/tmp/sajid/spack-stage/spack-stage-0boEG4/petsc/src/ts/interface/ts.c
[0]PETSC ERROR: #3 main() line 183 in
/raid/home/sajid/packages/xwp_petsc/2d/free_space/ex_modify.c
[0]PETSC ERROR: PETSc Option Table entries:
[0]PETSC ERROR: -ts_type cn
[0]PETSC ERROR: ----------------End of Error Message -------send entire
error message to petsc-maint at mcs.anl.gov----------
application called MPI_Abort(MPI_COMM_WORLD, 91) - process 0
[unset]: write_line error; fd=-1 buf=:cmd=abort exitcode=91
:
system msg for write_line failure : Bad file descriptor
[Inferior 1 (process 34440) exited with code 0133]
(gdb)
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