Sounds good. I will have a look at how to set this through petsc4py. Thanks Steve ________________________________ From: Satish Balay <ba...@mcs.anl.gov> Sent: Thursday, June 4, 2020 2:32 PM To: Hudson, Stephen Tobias P <shud...@anl.gov> Cc: petsc-users@mcs.anl.gov <petsc-users@mcs.anl.gov>; Lisandro Dalcin <dalc...@gmail.com> Subject: Re: Terminating a process running petsc via petsc4py without mpi_abort
I don't completely understand the issue here. How is sequential run different than parallel run? In both cases - a PetscErrorHandler is likely getting invoked. One can change this behavior with: https://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/PetscPushErrorHandler.html And there are a few default error handlers to choose PETSC_EXTERN PetscErrorCode PetscTraceBackErrorHandler(MPI_Comm,int,const char*,const char*,PetscErrorCode,PetscErrorType,const char*,void*); PETSC_EXTERN PetscErrorCode PetscIgnoreErrorHandler(MPI_Comm,int,const char*,const char*,PetscErrorCode,PetscErrorType,const char*,void*); PETSC_EXTERN PetscErrorCode PetscEmacsClientErrorHandler(MPI_Comm,int,const char*,const char*,PetscErrorCode,PetscErrorType,const char*,void*); PETSC_EXTERN PetscErrorCode PetscMPIAbortErrorHandler(MPI_Comm,int,const char*,const char*,PetscErrorCode,PetscErrorType,const char*,void*); PETSC_EXTERN PetscErrorCode PetscAbortErrorHandler(MPI_Comm,int,const char*,const char*,PetscErrorCode,PetscErrorType,const char*,void*); PETSC_EXTERN PetscErrorCode PetscAttachDebuggerErrorHandler(MPI_Comm,int,const char*,const char*,PetscErrorCode,PetscErrorType,const char*,void*); PETSC_EXTERN PetscErrorCode PetscReturnErrorHandler(MPI_Comm,int,const char*,const char*,PetscErrorCode,PetscErrorType,const char*,void*); Some of the are accessible via command line option. for ex: -on_error_abort or -on_error_mpiabort Or perhaps you want to completely disable error handler with: -no_signal_handler cc: petsc-users Satish On Thu, 4 Jun 2020, Hudson, Stephen Tobias P wrote: > Satish, > > We are having issues caused by MPI_abort getting called when we try to > terminate a sub-process running petsc4py. Ideally we would always use a > serial build of petsc/petsc4py in this mode, but many users will have a > parallel build. We need to be able to send a terminate signal that just kills > the process. > > Is there a way to turn off the mpi_abort? > > Thanks, > > Steve > >
