subject:"\[petsc\-users\] ASM with matrix\-free method"

Re: [petsc-users] ASM with matrix-free method

2017-02-02 Thread Stefano Zampini

> On Feb 2, 2017, at 6:02 PM, Matthew Knepley wrote: > > On Thu, Feb 2, 2017 at 8:55 AM, Sonia Pozzi > wrote: > Dear Barry, > > At the moment I’m dealing with the following problem. > > Suppose I want to solve Sx=b, where is a product of matrices. In particular >

Re: [petsc-users] ASM with matrix-free method

2017-02-02 Thread Matthew Knepley

On Thu, Feb 2, 2017 at 8:55 AM, Sonia Pozzi wrote: > Dear Barry, > > At the moment I’m dealing with the following problem. > > Suppose I want to solve Sx=b, where is a product of matrices. In > particular inside it contains also an inverse of a matrix. > To compute the action of S I have created

[petsc-users] ASM with matrix-free method

2017-02-02 Thread Sonia Pozzi

Dear Barry, At the moment I’m dealing with the following problem. Suppose I want to solve Sx=b, where is a product of matrices. In particular inside it contains also an inverse of a matrix. To compute the action of S I have created a shell matrix, but know I would like to apply the ASM as prec