PETSc will automatically avoid recomputing preconditioners if you call
solve multiple times with the same matrix and different right-hand-sides,
but we don't currently get this benefit because in PetscLinearSolver we
re-initialize the solver's matrix on each call to solve.
I tested out adding solv
On Mon, 6 Apr 2015, David Knezevic wrote:
> PETSc will automatically avoid recomputing preconditioners if you call solve
> multiple times with the same matrix and different right-hand-sides,
> but we don't currently get this benefit because in PetscLinearSolver we
> re-initialize the solver's m
On Mon, Apr 6, 2015 at 11:10 AM, Roy Stogner
wrote:
>
> On Mon, 6 Apr 2015, David Knezevic wrote:
>
> PETSc will automatically avoid recomputing preconditioners if you call
>> solve multiple times with the same matrix and different right-hand-sides,
>> but we don't currently get this benefit bec
