PETSc version 3.17.4
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# KSP_DIVERGED_PC_FAILED

It was not possible to build or use the requested preconditioner. This is usually due to a zero pivot in a factorization. It can also result from a failure in a subpreconditioner inside a nested preconditioner such as PCFIELDSPLIT.

### Notes

Run with -ksp_error_if_not_converged to stop the program when the error is detected and print an error message with details.

### See Also

KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

### Level

beginner

### Location

src/ksp/ksp/guess/../../../../include/petscksp.h
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages