On Mon, Jul 20, 2020 at 2:36 PM Fande Kong <fdkong...@gmail.com> wrote:
> Hi Mark, > > Just to be clear, I do not think it is related to GAMG or PtAP. It is a > communication issue: > Youe stack trace was from PtAP, but Chris's problem is not. > > Reran the same code, and I just got : > > [252]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > [252]PETSC ERROR: Petsc has generated inconsistent data > [252]PETSC ERROR: Received vector entry 4469094877509280860 out of local > range [255426072,256718616)] > OK, now this (4469094877509280860) is clearly garbage. THat is the important thing. I have to think your MPI is buggy.