[petsc-users] strange segv

Mark Adams mfadams at lbl.gov
Sat May 29 14:16:16 CDT 2021


I am running on Summit with Kokkos-CUDA and I am getting a segv that looks
like some sort of a compile/link mismatch. I also have a user with a C++
code that is getting strange segvs when calling MatSetValues with CUDA (I
know MatSetValues is not a cupsarse method, but that is the report that I
have). I have no idea if these are related but they both involve C -- C++
calls ...

I started with a clean build (attached) and I ran in DDT. DDT stopped at
the call in plexland.c to the KokkosLanau operator. I stepped into this
function and then took this screenshot of the stack, with the Kokkos call
and PETSc signal handler.

Make check does not seem to be running Kokkos tests:

15:02 adams/landau-mass-opt *= /gpfs/alpine/csc314/scratch/adams/petsc$
make PETSC_DIR=/gpfs/alpine/csc314/scratch/adams/petsc
PETSC_ARCH=arch-summit-opt-gnu-kokkos-notpl-cuda10 check
Running check examples to verify correct installation
Using PETSC_DIR=/gpfs/alpine/csc314/scratch/adams/petsc and
PETSC_ARCH=arch-summit-opt-gnu-kokkos-notpl-cuda10
C/C++ example src/snes/tutorials/ex19 run successfully with 1 MPI process
C/C++ example src/snes/tutorials/ex19 run successfully with 2 MPI processes
C/C++ example src/snes/tutorials/ex19 run successfully with cuda
Completed test examples

Also, I ran this AM with another branch that had not been rebased with main
as recently as this branch (adams/landau-mass-opt).

Any ideas?
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