Re: [petsc-users] reuse Mumps factorization for multiple RHS

2020-08-04 Thread Zhang, Hong via petsc-users
See case '"-num_rhs" in petsc/src/ksp/ksp/tests/ex30.c Hong From: petsc-users on behalf of Matthew Knepley Sent: Tuesday, August 4, 2020 7:29 PM To: Anthony Paul Haas Cc: petsc-users Subject: Re: [petsc-users] reuse Mumps factorization for m

Re: [petsc-users] reuse Mumps factorization for multiple RHS

2020-08-04 Thread Matthew Knepley
On Tue, Aug 4, 2020 at 7:57 PM Anthony Paul Haas wrote: > Hello, > > When using Mumps to solve a linear system of equations (see below), can I > reuse the factorization to solve for multiple RHS, ie, can I use KSPSolve > multiple > times while only building a different RHS in between the calls t

Re: [petsc-users] reuse Mumps factorization for multiple RHS

2020-08-04 Thread Barry Smith
Yes, it automatically uses the same factorization. > On Aug 4, 2020, at 6:55 PM, Anthony Paul Haas wrote: > > Hello, > > When using Mumps to solve a linear system of equations (see below), can I > reuse the factorization to solve for multiple RHS, ie, can I use KSPSolve > multiple times w

[petsc-users] reuse Mumps factorization for multiple RHS

2020-08-04 Thread Anthony Paul Haas
Hello, When using Mumps to solve a linear system of equations (see below), can I reuse the factorization to solve for multiple RHS, ie, can I use KSPSolve multiple times while only building a different RHS in between the calls to KSPSolve? Thanks, Anthony call KSPSetType(self%ksp,KSPPREONLY,sel