[OMPI users] performance issue mpi_init

2015-04-28 Thread Steven Vancoillie
hort tests that consists of independent executables that are run thousands of times, so each time calling mpi_init. This increases the total time of running the entire test suite from around 2-3 hours (with MPICH or OpenMPI 1.6.5 with OMPI_MCA_btl=tcp,self) to around 9 hours with OpenMPI 1.8

Re: [OMPI users] performance issue mpi_init

2015-05-07 Thread Steven Vancoillie
On Apr 28 [07:57], Ralph Castain wrote: > Here is what I get on my CentOS7 system using the 1.8.5 about to be released: I have now tried 1.8.5 release candidate 3 and now I get much better performance. So, I will just move on to 1.8.5 and consider this solved. > If you have a hostfile (or allocat