[petsc-users] Hypre PILUT preconditioner

[Barry Smith]

  You need to contact hypre team. We don't think much of parallel ILU and can't support it ourselves.

  Barry

> On Sep 29, 2017, at 7:12 AM, Khai Pham <khaipham at mit.edu> wrote:
> 
> Hi,
> 
> I try to use the parallel ILU which is provided by hypre library. As from some discussion from other petsc users, it mentioned that euclid preconditioner from hypre was removed from petsc. So, I tried the ilu with threshold "pilut", it is okay as I run in sequential, but it has an error as I tried with parallel :
> 
>         parilut.c:274: hypre_ComputeCommInfo: Assertion `cinfo->incolind != ((void *)0)' failed.
> 
> I tried with other preconditioner from hypre as boomeramg, and it works fine. I am wondering that causes this issue with "pilut". I am aware that other petsc developers mention about some scaling issue with parallel ILU, but I would like to try it for my problem. Please let me know if you have any idea about this error. Thanks! 
> 
> Best,
> Khai