[petsc-users] About Configuring PETSc

Sat Mar 23 13:55:43 CDT 2019

On Sat, Mar 23, 2019 at 2:51 PM Maahi Talukder <maahi.buet at gmail.com> wrote:

> Thank you for your reply.
>
> In my PETSC directory, there is only one "arch..." directory called
> arch-linux2-c-debug. And with that one, I can only run my code in debugging
> mode. But I want to run them in non-debugging mode, so I was wondering what
> to do.
> So should I run the command ' ./configure --with-debugging=no'?
>

I use 0. I don't know if 'no' works. I would guess that PETSc would pick
arch-linux2-c-opt, or something like that if you do not provide a
PETSC_ARCH.

> On Sat, Mar 23, 2019 at 2:29 PM Mark Adams <mfadams at lbl.gov> wrote:
>
>>
>>
>> On Sat, Mar 23, 2019 at 2:13 PM Maahi Talukder via petsc-users <
>> petsc-users at mcs.anl.gov> wrote:
>>
>>> I think I didn't build with PETSC-ARCH=arch-opt.
>>> So just to make sure, now I just run the command - ./configure
>>> PETSC_ARCH = arch-opt - and it will create the missing directory and I can
>>> switch between different architectures, right?
>>>
>>
>> I would not put any spaces around "=", and you can also just look at what
>> PETSc defaulted to and use that directory. PETSc will pick a default
>> architecture name and you should see an "arch..." directory in your PETSc
>> directory.
>>
>>
>>>
>>> Thanks,
>>> Maahi Talukder
>>>
>>> On Fri, Mar 22, 2019 at 3:12 PM Balay, Satish <balay at mcs.anl.gov> wrote:
>>>
>>>> Did you build PETSc with PETSC_ARCH=arch-opt?
>>>>
>>>> Btw - I used PETSC_ARCH=arch-debug to illustrate - but you already
>>>> have a build with PETSC_ARCH=arch-linux2-c-debug - so you should stick
>>>> to that.
>>>>
>>>> Satish
>>>>
>>>> On Fri, 22 Mar 2019, Maahi Talukder via petsc-users wrote:
>>>>
>>>> > Hi,
>>>> >
>>>> > I tried to run the command 'make PETSC_ARCH=arch-opt wholetest1' but
>>>> it
>>>> > shows me the following error-
>>>> >
>>>> >
>>>> ..................................................................................................................................................
>>>> > [maahi at CB272PP-THINK1 Desktop]$ make PETSC_ARCH=arch-opt wholetest1
>>>> > /home/maahi/petsc/lib/petsc/conf/rules:960:
>>>> > */home/maahi/petsc/arch-opt/lib/petsc/conf/petscrules:
>>>> > No such file or directory*
>>>> > make: *** No rule to make target
>>>> > '/home/maahi/petsc/arch-opt/lib/petsc/conf/petscrules'.  Stop.
>>>> >
>>>> ........................................................................................................................................................
>>>> >
>>>> > My .bashrc is the following -
>>>> >
>>>> > .....................................................................
>>>> >
>>>> > PATH=$PATH:$HOME/.local/bin:$HOME/bin:/usr/lib64/openmpi/bin
>>>> >
>>>> > export PATH
>>>> >
>>>> > export PETSC_DIR=$HOME/petsc
>>>> > export PETSC_ARCH=arch-linux2-c-debug
>>>> > #export PETSC_ARCH=arch-debug
>>>> >
>>>> >
>>>> ..........................................................................................
>>>> >
>>>> > Could you please tell me what went wrong?
>>>> >
>>>> > Regards,
>>>> > Maahi Talukder
>>>> >
>>>> >
>>>> > On Thu, Mar 21, 2019 at 11:55 PM Maahi Talukder <maahi.buet at gmail.com
>>>> >
>>>> > wrote:
>>>> >
>>>> > > Thank you so much for your reply. That clear things up!
>>>> > >
>>>> > > On Thu, Mar 21, 2019 at 10:43 PM Balay, Satish <balay at mcs.anl.gov>
>>>> wrote:
>>>> > >
>>>> > >> 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 <
>>>> balay at 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
>>>> > >> > > >
>>>> > >> > >
>>>> > >> > >
>>>> > >> >
>>>> > >>
>>>> > >>
>>>> >
>>>>
>>>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20190323/05d66fca/attachment-0001.html>