Re: [petsc-users] AIJ vs BAIJ when using ILU factorization

2020-04-17 Thread Fande Kong
bs=4. What happens if you try aij with > '-matload_block_size 1 -mat_no_inode true'? > Hong > > -- > *From:* petsc-users on behalf of Fande > Kong > *Sent:* Monday, March 30, 2020 12:25 PM > *To:* PETSc users list > *Subject:* [pets

Re: [petsc-users] AIJ vs BAIJ when using ILU factorization

2020-03-31 Thread Zhang, Hong via petsc-users
30, 2020 12:25 PM To: PETSc users list Subject: [petsc-users] AIJ vs BAIJ when using ILU factorization Hi All, There is a system of equations arising from the discretization of 3D incompressible Navier-Stoke equations using a finite element method. 4 unknowns are placed on each mesh point

[petsc-users] AIJ vs BAIJ when using ILU factorization

2020-03-30 Thread Fande Kong
Hi All, There is a system of equations arising from the discretization of 3D incompressible Navier-Stoke equations using a finite element method. 4 unknowns are placed on each mesh point, and then there is a 4x4 saddle point block on each mesh vertex. I was thinking to solve the linear equations