[Issue] "Reorder_cols_by_color" error when using MULTICOLOR_ILU

[kkmund146]

Hello,

I am using amgx as a preconditioner with PETSc and when I try to use the MULTICOLOR_ILU solver, I get the following error message:

I believe I would have to change the config file itself to make this default as this is not currently a selected option in PETSc amgx. Would anyone know which files to modify and the necessary method to change these settings? My outlog and errlog are attached. ILU test-out.txt ILUtest-err.txt

[BigTailWolfLSL]

Well, the same. After setting the reorder_cols_by_color=1 and insert_diag_while_reordering=1, it error out "Unsupported block size for Multicolor ILU solver". Is there any instance successfully use Multicolor_ILU?

[BigTailWolfLSL]

Well, I think the issue following gives a explanation for this. I think my matrix structure has problems on using MULTICOLOR_ILU. Good luck. ILUhttps://github.com/NVIDIA/AMGX/issues/35