Ralph, I did the following:
export OMPI_MCA_mpi_show_mca_params="file,env" then I checked and found it via the set command as OMPI_MCA_mpi_show_mca_params=file,env I then ran my application ./orca hexatriene_TDDFT_get_asa_input_parallel_1.inp > 1.2.8_test_crafted_input_file.out and got the expected ORCA output in the .out file but nothing at the command line or in the .out file about mca_params What did I do wrong? Jim On Mon, 2009-06-22 at 19:40 -0600, Ralph Castain wrote: > Sounds very strange, indeed. You might want to check that your app is > actually getting the MCA param that you think it is. Try adding: > > -mca mpi_show_mca_params file,env > > to your cmd line. This will cause rank=0 to output the MCA params it > thinks were set via the default files and/or environment (including > cmd line). > > Ralph > > On Jun 22, 2009, at 6:14 PM, Jim Kress ORG wrote: > > > For the app I am using, ORCA (a Quantum Chemistry program), when it > > was > > compiled using openMPI 1.2.8 and run under 1.2.8 with the following in > > the openmpi-mca-params.conf file: > > > > btl=self,openib > > > > the app ran fine with no traffic over my Ethernet network and all > > traffic over my Infiniband network. > > > > However, now that ORCA has been recompiled with openMPI v1.3.2 and run > > under 1.3.2 (using the same openmpi-mca-params.conf file), the > > performance has been reduced by 50% and all the MPI traffic is going > > over the Ethernet network. > > > > As a matter of fact, the openMPI v1.3.2 performance now looks exactly > > like the performance I get if I use MPICH 1.2.7. > > > > Anyone have any ideas: > > > > 1) How could this have happened? > > > > 2) How can I fix it? > > > > a 50% reduction in performance is just not acceptable. Ideas/ > > suggestions would be appreciated. > > > > Jim > > > > _______________________________________________ > > users mailing list > > us...@open-mpi.org > > http://www.open-mpi.org/mailman/listinfo.cgi/users > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
