[petsc-dev] problem with hypre with '--with-openmp=1'

[Smith, Barry F.]

  I hate OpenMP with a passion



> On Jun 26, 2018, at 1:59 PM, Mark Adams <mfadams at lbl.gov> wrote:
> 
> 
> 
> On Tue, Jun 26, 2018 at 1:06 PM Satish Balay <balay at mcs.anl.gov> wrote:
> I wonder if these jobs are scheduled in such a way so that they are not oversubscribed.
> 
> i.e number_mpi_jobs_per_node * number_of_openmp_threads_per_node <= no_of_cores_per_node
> 
> You are right(ish). This fixed the problem:
> 
> export OMP_NUM_THREADS=1
> 
>