[petsc-dev] Unable to access to MatSeqSBAIJGetArray_SeqSBAIJ from "outside" PETSc

Eric Chamberland Eric.Chamberland at giref.ulaval.ca
Fri Jan 6 14:46:05 CST 2017


Hi,

we are trying to add a "petsc" developpement into our code but we need 
to call MatSeqSBAIJGetArray_SeqSBAIJ for it.

Unlike MatSeqAIJGetArray_SeqAIJ which is accessible with either

MatSeqAIJGetArray

or

ierr = 
PetscUseMethod(A,"MatSeqAIJGetArray_C",(Mat,PetscScalar**),(A,array));CHKERRQ(ierr);

there is no MatSeqSBAIJGetArray and we can't call it with

ierr = 
PetscUseMethod(A,"MatSeqSBAIJGetArray_C",(Mat,PetscScalar**),(A,array));CHKERRQ(ierr);

since it isn't registered in MatCreate_SeqSBAIJ.

is it normal?

We can call MatSeqSBAIJGetArray_SeqSBAIJ directly, but the linker 
complains about unresolved symbol because it is not exported global but 
only local in our shared library:

nm /opt/petsc-3.7.2_debug_matmatmult_mpi/lib/libpetsc.so |grep 
MatSeqSBAIJGetArray
00000000007f7b74 t MatSeqSBAIJGetArray_SeqSBAIJ

Is there any (nasty) way to override the shared library global/local 
symbols attribute?

Thanks,

Eric




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