[petsc-users] Regarding Issue with Metis Double Precision

[s.pradeep kumar]

Dear All,

       * I recently tried to install Metis along with PETSC 3.19.1, using
following command,*

./configure  --with-scalar-type=real --with-precision=double
--download-metis  --download-parmetis  --with-cmake=1
 --with-mpi-dir=/opt/cray/pe/mpich/8.1.9/ofi/gnu/9.1
--download-fblaslapack=1 --with-debugging=0 COPTFLAGS=-O2 FOPTFLAGS=-O2

*While compiling my code, I get this warning sign, *

34: warning: passing argument 10 of 'ParMETIS_V3_PartKway' from
incompatible pointer type [-Wincompatible-pointer-types]
   79 |                     nparts,tpwgts,ubvec,options,
      |                                  ^~~~~~
      |                                  |
      |                                  PetscScalar * {aka double *}
In file included from /v2_petsc_check/ParmetisWrappers.c:5:
NumericalLibraries/petsc-3.19.1/gnu-opt/include/parmetis.h:70:22: note:
expected 'real_t *' {aka 'float *'} but argument is of type 'PetscScalar *'
{aka 'double *'}
   70 |              real_t *tpwgts, real_t *ubvec, idx_t *options, idx_t
*edgecut, idx_t *part,
      |              ~~~~~~~~^~~~~~
/v2_petsc_check/ParmetisWrappers.c:79:41: warning: passing argument 11 of
'ParMETIS_V3_PartKway' from incompatible pointer type
[-Wincompatible-pointer-types]
   79 |                           nparts,tpwgts,ubvec,options,
      |                                         ^~~~~
      |                                         |
      |                                         PetscScalar * {aka double *}

*Ignoring the warning sign leads to code crashing due to Parmetis Error,*

parmetis error: the sum of tpwgts for constraint #0 is not 1.0

*How should I proceed further?*

Regards,
Pradeep
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