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# KSP_DIVERGED_NONSYMMETRIC

It appears the operator or preconditioner is not symmetric and this Krylov method (`KSPCG`, `KSPMINRES`, `KSPCR`) requires symmetry

## See Also

KSP: Linear System Solvers, `KSPSolve()`, `KSPGetConvergedReason()`, `KSPConvergedReason`, `KSPSetTolerances()`

## Level

beginner

## Location

include/petscksp.h

Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages