[petsc-users] PETSc without debugging

[Matthew Knepley]

On Mon, Mar 14, 2016 at 8:10 PM, Michele Rosso <mrosso at uci.edu> wrote:

> Hi,
>
> I compiled the development branch of PETSc with "--with-debugging=0", but
> log_view warns me that I am running in debugging mode:
>
>       ##########################################################
>       #                                                        #
>       #                          WARNING!!!                    #
>       #                                                        #
>       #   This code was compiled with a debugging option,      #
>       #   To get timing results run ./configure                #
>       #   using --with-debugging=no, the performance will      #
>       #   be generally two or three times faster.              #
>       #                                                        #
>       ##########################################################
>
> I attached the full output of log_view: it seems that I configured PETSc
> correctly.
> Can I safely ignore this or I am missing something?
>

>From the log you sent:

Configure options: --known-level1-dcache-size=16384
--known-level1-dcache-linesize=64 --known-level1-dcache-assoc=4
--known-sizeof-char=1 --known-sizeof-void-p=8 --known-sizeof-short=2
--known-sizeof-int=4 --known-sizeof-long=8 --known-sizeof-long-long=8
--known-sizeof-float=4 --known-sizeof-double=8 --known-sizeof-size_t=8
--known-bits-per-byte=8 --known-memcmp-ok=1 --known-sizeof-MPI_Comm=4
--known-sizeof-MPI_Fint=4 --known-mpi-long-double=1
--known-mpi-int64_t=1 --known-mpi-c-double-complex=1
--known-sdot-returns-double=0 --known-snrm2-returns-double=0
--known-has-attribute-aligned=1
--prefix=/u/sciteam/mrosso/libs/petsc/gnu/4.9/opt --with-batch="1 "
--known-mpi-shared="0 " --known-mpi-shared-libraries=0
--known-memcmp-ok
--with-blas-lapack-lib=/opt/acml/5.3.1/gfortran64/lib/libacml.a
--COPTFLAGS="-march=bdver1 -O3 -ffast-math -fPIC"
--FOPTFLAGS="-march=bdver1 -O3 -ffast-math -fPIC"
--CXXOPTFLAGS="-march=bdver1 -O3 -ffast-math -fPIC" --with-x="0 "
--with-debugging=O --with-clib-autodetect="0 "
--with-cxxlib-autodetect="0 " --with-fortranlib-autodetect="0 "
--with-shared-libraries="0 " --with-mpi-compilers="1 " --with-cc="cc "
--with-cxx="CC " --with-fc="ftn " --download-hypre=1
--download-blacs="1 " --download-scalapack="1 "
--download-superlu_dist="1 " --download-metis="1 "
--download-parmetis="1 " PETSC_ARCH=gnu-opt-32idx

It looks like you have set

  --with-debugging=O

not

  --with-debugging=0

  Thanks,

    Matt


> Thanks,
> Michele
>



-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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