PCILUSetFill
Indicate the amount of fill you expect in the factored matrix, where fill = number nonzeros in factor/number nonzeros in original matrix.
Synopsis
int PCILUSetFill(PC pc,double fill)
Collective on PC
Input Parameters
pc | - the preconditioner context
|
fill | - amount of expected fill
|
Options Database Key
-pc_ilu_fill <fill>
Note
For sparse matrix factorizations it is difficult to predict how much
fill to expect. By running with the option -log_info PETSc will print the
actual amount of fill used; allowing you to set the value accurately for
future runs. Bt default PETSc uses a value of 1.0
Keywords
PC, set, factorization, direct, fill
See Also
PCLUSetFill()
Level:intermediate
Location:src/sles/pc/impls/ilu/ilu.c
PC Index
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