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

Re: [OMPI users] performance issue mpi_init

2015-04-28 Thread Ralph Castain
Here is what I get on my CentOS7 system using the 1.8.5 about to be released: When built as a debug build: 07:41:34 (v1.8) /home/common/openmpi/ompi-release/orte/test/mpi$ time mpirun -host bend001 -n 2 ./mpi_no_op real0m0.120s user0m0.064s sys 0m0.090s 07:42:05 (v1.8) /home/commo

[OMPI users] performance issue mpi_init

2015-04-28 Thread Steven Vancoillie
Dear OpenMPI developers, I've run into a recurring problem that was addressed before on this list, of which subject was "Performance issue of mpirun/mpi_init". I found the original thread here: http://comments.gmane.org/gmane.comp.clustering.open-mpi.user/21346 My former colleague noted that with