**-pc_prometheus_rowmax ** -use the maximum absolute value in each row as the scaling factor,
rather than the diagonal

Notes: By using KSPSetPreconditionerSide(ksp,PC_SYMMETRIC) or -ksp_symmetric_pc you
can scale each side of the matrix by the squareroot of the diagonal entries.

Zero entries along the diagonal are replaced with the value 1.0

### See Also

PCCreate(), PCSetType(), PCType (for list of available types), PC

**Level:**beginner

Location:src/ksp/pc/impls/prometheus/petscprom.c

Index of all PC routines

Table of Contents for all manual pages

Index of all manual pages