solver or preconditioner?--Отправлено из мобильной Яндекс Почты05.08.2024, 18:51, "Barry Smith" :PCFactorSetShiftType() only works for certain preconditioners, ILU. If the matrix is not symmetric it also doesn't help.Are you sure the matrix is symmetric positive definite?On Aug 5, 2024, at 4:43
verged_reason -ksp_view to see why it is stopping at 38 iterations. BarryOn Jul 22, 2024, at 7:37 AM, Константин Мурусидзе <konstantin.murusi...@math.msu.ru> wrote:This Message Is From an External SenderThis message came from outside your organization.Good afternoon. I am a student at the Facu
Good afternoon. I am a student at the Faculty of Mathematics and for my course work I need to solve SLAE with a relative accuracy of 1e-8 or more. To do this, I created the function PetscCall(KSPSetTolerances(ksp, 1. e-8, PETSC_DEFAULT, PETSC_DEFAULT,
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Hello! I have such problem, while solving linear system and using PCFactorSetDropTolerance. As I understand this function could significantly reduce number of iterations of system of solution, but there is no iterations decreasing. I had try
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Thi
