:orphan: # KSP_DIVERGED_NONSYMMETRIC It appears the operator or preconditioner is not symmetric and this Krylov method (`KSPCG`, `KSPMINRES`, `KSPCR`) requires symmetry ## See Also [](ch_ksp), `KSPSolve()`, `KSPGetConvergedReason()`, `KSPConvergedReason`, `KSPSetTolerances()` ## Level beginner ## Location include/petscksp.h --- [Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/include/petscksp.h) [Index of all KSP routines](index.md) [Table of Contents for all manual pages](/manualpages/index.md) [Index of all manual pages](/manualpages/singleindex.md)