On Thu, 21 Mar 2019, Maahi Talukder via petsc-users wrote: > Thank you for your reply. > > So do I need to set the value of PETSC_ARCH as needed in .bashrc as I did > in case of PETSC_DIR ?
You can specify PETSC_ARCH as an option to make. You can have a default value set in .bashrc - and change to a different value on command line. For ex: in .bashrc export PETSC_ARCH=arch-debug Now if you want to build with debug libraries: make wholetest1 Now If you want to build with optimized libraries: make PETSC_ARCH=arch-opt wholetest1 > And by PETSC_ARCH=arch-opt, do you mean the > non-debugging mode? Yes. You can use whatever name you think is appropriate here. ./configure PETSC_ARCH=a-name-i-can-easily-associate-with-this-build [other configure options.] > > And I am using the following makefile with my code- > > CFLAGS = > FFLAGS =-I/home/maahi/petsc/include > -I/home/maahi/petsc/arch-linux2-c-debug/include -cpp -mcmodel=large Hm - you shouldn't be needing these options here. You should switch your source files from .f to .F and .f90 to .F90 - and remove the above FFLAGS Satish > CPPFLAGS = > FPPFLAGS = > > > include ${PETSC_DIR}/lib/petsc/conf/variables > include ${PETSC_DIR}/lib/petsc/conf/rules > > wholetest1: wholetest1.o > -${FLINKER} -o wholetest1 wholetest1.o ${PETSC_LIB} > ${RM} wholetest1.o > > So where do I add that PETSC_ARCH? > > Thanks, > Maahi Talukder > > On Thu, Mar 21, 2019 at 10:14 PM Balay, Satish <ba...@mcs.anl.gov> wrote: > > > PETSc uses the concept of PETSC_ARCH to enable multiple in-place > > builds. > > > > So you can have a debug build with PETSC_ARCH=arch-debug, and a > > optimized build with PETSC_ARCH=arch-opt etc. > > > > And if you are using a petsc formatted makefile with your code - you > > can switch between these builds by just switching PETSC_ARCH. > > > > Satish > > > > On Thu, 21 Mar 2019, Maahi Talukder via petsc-users wrote: > > > > > Dear All, > > > > > > Currently, I am running PETSc with debugging option. And it says that if > > I > > > run ./configure --with-debugging=no, the performance would be faster. My > > > question is: what would I do if I want to go back to debugging mode, and > > If > > > I configure it now with no debugging option, would it make any changes to > > > my current setting? > > > > > > Regards, > > > Maahi Talukder > > > > > > > >