[petsc-users] Installing PETSc in Ubuntu 24.04 - check test error

[Satish Balay]

what do you have for:

/usr/local/openmpi-4.1.5/bin/mpif90 -show

Also, can you try:

make check FFLAGS=-Wno-maybe-uninitialized

Satish

On Tue, 3 Sep 2024, Barry Smith wrote:

> 
>    This is fine. Just an over-enthusiastic compiler 
> 
>    Barry
> 
> 
> > On Sep 3, 2024, at 9:43 PM, Bodhinanda Chandra <bodhinandach at gmail.com> wrote:
> > 
> > Dear PETSc community,
> > 
> > I recently tried to install PETSc in Ubuntu 24.04. All seems to work fine, but one of the check tests ex5f thow the following errors:
> > 
> > ----------------------------------------------------------------------------------------------------
> > 
> > Running PETSc check examples to verify correct installation
> > Using PETSC_DIR=/home/bchandra/Program/petsc and PETSC_ARCH=arch-linux-c-opt
> > C/C++ example src/snes/tutorials/ex19 run successfully with 1 MPI process
> > C/C++ example src/snes/tutorials/ex19 run successfully with 2 MPI processes
> > C/C++ example src/snes/tutorials/ex19 run successfully with HYPRE
> > *******************Error detected during compile or link!*******************
> > See https://urldefense.us/v3/__https://petsc.org/release/faq/__;!!G_uCfscf7eWS!aWfx77pFkinEWnfZuOJV9iSUGz1PtCHOLEjTdL_APZHj6LB9f3z5sn2XDepCVrIL3IqhVVJH51ih6RUxgdeFsJ0$  <https://urldefense.us/v3/__https://petsc.org/release/faq/__;!!G_uCfscf7eWS!bNBtvML4qAKu9WGzBH2kRjtiP8AwN3ijY4qZngu7nvl_TUwz8pQ6WGyCJh0AtIEOqLHU5NHUJRL1oWg2FeTR0Oz6868$>
> > /home/bchandra/Program/petsc/src/snes/tutorials ex5f
> > *********************************************************
> > /usr/local/openmpi-4.1.5/bin/mpif90 -fPIC -Wall -ffree-line-length-none -ffree-line-length-0 -Wno-lto-type-mismatch -Wno-unused-dummy-argument -Wall -ffree-line-length-none -ffree-line-length-0 -Wno-lto-type-mismatch -Wno-unused-dummy-argument -O3 -march=native -mtune=native   -I/home/bchandra/Program/petsc/include -I/home/bchandra/Program/petsc/arch-linux-c-opt/include -I/usr/local/openmpi-4.1.5/include     ex5f.F90  -Wl,-rpath,/home/bchandra/Program/petsc/arch-linux-c-opt/lib -L/home/bchandra/Program/petsc/arch-linux-c-opt/lib -Wl,-rpath,/usr/local/openmpi-4.1.5/lib -L/usr/local/openmpi-4.1.5/lib -Wl,-rpath,/usr/lib/gcc/x86_64-linux-gnu/13 -L/usr/lib/gcc/x86_64-linux-gnu/13 -lpetsc -lHYPRE -lflapack -lfblas -lm -lX11 -lmpi_usempif08 -lmpi_usempi_ignore_tkr -lmpi_mpifh -lmpi -lgfortran -lm -lgfortran -lm -lgcc_s -lquadmath -lstdc++ -lquadmath -o ex5f
> > ex5f.F90:439:52:
> > 
> >   439 |       PetscInt  row,col(5),i,j,i1,i5
> >       |                                                    ^
> > Warning: ‘col[1]’ may be used uninitialized [-Wmaybe-uninitialized]
> > ex5f.F90:439:52: Warning: ‘col[2]’ may be used uninitialized [-Wmaybe-uninitialized]
> > ex5f.F90:439:52: Warning: ‘col[3]’ may be used uninitialized [-Wmaybe-uninitialized]
> > ex5f.F90:476:83:
> > 
> >   476 |                call MatSetValuesLocal(jac,i1,[row],i1,[col],[v],INSERT_VALUES,ierr)
> >       |                                                                                   ^
> > Warning: ‘col[4]’ may be used uninitialized [-Wmaybe-uninitialized]
> > ex5f.F90:439:52:
> > 
> >   439 |       PetscInt  row,col(5),i,j,i1,i5
> >       |                                                    ^
> > note: ‘col[4]’ was declared here
> > ex5f.F90:476:83:
> > 
> >   476 |                call MatSetValuesLocal(jac,i1,[row],i1,[col],[v],INSERT_VALUES,ierr)
> >       |                                                                                   ^
> > Warning: ‘v[1]’ may be used uninitialized [-Wmaybe-uninitialized]
> > ex5f.F90:440:58:
> > 
> >   440 |       PetscScalar two,one,hx,hy,v(5)
> >       |                                                          ^
> > note: ‘v[1]’ was declared here
> > ex5f.F90:476:83:
> > 
> >   476 |                call MatSetValuesLocal(jac,i1,[row],i1,[col],[v],INSERT_VALUES,ierr)
> >       |                                                                                   ^
> > Warning: ‘v[2]’ may be used uninitialized [-Wmaybe-uninitialized]
> > ex5f.F90:440:58:
> > 
> >   440 |       PetscScalar two,one,hx,hy,v(5)
> >       |                                                          ^
> > note: ‘v[2]’ was declared here
> > ex5f.F90:476:83:
> > 
> >   476 |                call MatSetValuesLocal(jac,i1,[row],i1,[col],[v],INSERT_VALUES,ierr)
> >       |                                                                                   ^
> > Warning: ‘v[3]’ may be used uninitialized [-Wmaybe-uninitialized]
> > ex5f.F90:440:58:
> > 
> >   440 |       PetscScalar two,one,hx,hy,v(5)
> >       |                                                          ^
> > note: ‘v[3]’ was declared here
> > ex5f.F90:476:83:
> > 
> >   476 |                call MatSetValuesLocal(jac,i1,[row],i1,[col],[v],INSERT_VALUES,ierr)
> >       |                                                                                   ^
> > Warning: ‘v[4]’ may be used uninitialized [-Wmaybe-uninitialized]
> > ex5f.F90:440:58:
> > 
> >   440 |       PetscScalar two,one,hx,hy,v(5)
> >       |                                                          ^
> > note: ‘v[4]’ was declared here
> > Fortran example src/snes/tutorials/ex5f run successfully with 1 MPI process
> > Completed PETSc check examples
> > 
> > ----------------------------------------------------------------------------------------------------
> > 
> > Any ideas what happened and how to fix it? Many thanks in advance.
> > 
> > Kind regards,
> > Nanda
> 
>