PETSC Exec error : Check BilinearOperator N M

General Discussion
1

Hello, teacher, what is the reason for this?

– Square mesh : nb vertices =66049 , nb triangles = 131072 , nb boundary edges 1024
– Square mesh : nb vertices =1089 , nb triangles = 2048 , nb boundary edges 128
— partition of unity built (in 5.870000e-05)
— global numbering created (in 5.030000e-05)
— global CSR created (in 1.965000e-04)
— global numbering created (in 3.960001e-05)
— global CSR created (in 1.208000e-04)
— global numbering created (in 1.221500e-03)
— global CSR created (in 1.486000e-04)

  • 1 2*0 0
    current line = 64 mpirank 0 / 1
    Exec error : Check BilinearOperator N M
    – number :1
    Exec error : Check BilinearOperator N M
    – number :1
    err code 8 , mpirank 0
2

Please share a minimal running example.