Re: [deal.II] Observations on CPU usage on a single processor

2016-08-03 Thread Wolfgang Bangerth
Pete, I was surprised to see all 4 cores (8 threads) being used in step-8 which does not have PETSc/MPI support. In the solver, the main thread was using 100% of it's resources. The others were using very consistently 24-25% independent of #DOF. Is the normal SolverCG<> of step-8 multi-theaded?

[deal.II] Observations on CPU usage on a single processor

2016-08-03 Thread Pete Griffin
Hello All. This is more of an observation with questions, I have been looking closely at CPU usage on a single Quad-Core processor with and without PETSc/MPI. I was surprised to see all 4 cores (8 threads) being used in step-8 which does not have PETSc/MPI support. In the solver, the main threa