petsc-3.14.5 2021-03-03
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# PCSVD

Use pseudo inverse defined by SVD of operator

### Options Database

| -pc_svd_zero_sing <rtol> Singular values smaller than this are treated as zero
| -pc_svd_monitor Print information on the extreme singular values of the operator

### Developer Note

This implementation automatically creates a redundant copy of the matrix on each process and uses a sequential SVD solve. Why does it do this instead of using the composable PCREDUNDANT object?

### See Also

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

### Level

advanced

### Location

src/ksp/pc/impls/svd/svd.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages