Hi, So looking deeper into the issue, it appears that running mpirun instantiates 8 processors but only executes on 4.
This is using mpirun -np 8. This occurs on both nodes. so it appears in instantiates 16 instead of 8. This does not happen on any of our other mpirun benchmarks. We are running centos7, mpi 1.10, and standard gcc for this execution. We are executing cube_hex. perhaps you can add some insight into why this is happening. regards Liam On Wednesday, December 7, 2016 at 5:46:35 PM UTC+2, Liam Doult wrote: > > Hi, > > I am executing Pyfr 1.5.0 on duel xeon 2630v4 10c per node with 2 nodes. > As I scale the mpirun -np up to 40 the performance is drastically reduced. > > It also appears to be capped at 50% of the maximum cpu performance. > > Any insight is appreciated > > Regards > Liam > -- You received this message because you are subscribed to the Google Groups "PyFR Mailing List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. Visit this group at https://groups.google.com/group/pyfrmailinglist. For more options, visit https://groups.google.com/d/optout.
