Re: [petsc-users] Matrix assembly problem of overlapped DMPlex

2023-07-23 Thread Matthew Knepley
On Sun, Jul 23, 2023 at 11:54 AM 袁煕 wrote: > 袁煕 > 0:50 (0 分前) > To PETSc > Hi, > > I used PETSc to assemble a FEM stiff matrix of an overlapped (overlap=2) > DMPlex and used the MUMPS solver to solve it. But I got a > different solution by using 1 CPU and MPI parallel computation. I am >

[petsc-users] Matrix assembly problem of overlapped DMPlex

2023-07-23 Thread 袁煕
袁煕 0:50 (0 分前) To PETSc Hi, I used PETSc to assemble a FEM stiff matrix of an overlapped (overlap=2) DMPlex and used the MUMPS solver to solve it. But I got a different solution by using 1 CPU and MPI parallel computation. I am wondering if I missed some necessary step or setting during my